Demon King Army Ost

Centuries ago, the fearsome Demon King made a fateful choice: to shatter his immense power into shards and scatter them across the world, vowing to protect the delicate balance between light and shadow. In his final moments, he swore an oath to prevent his return, even if it meant erasing himself from existence. Reborn as Caius Thorne, the youngest son of a noble family, he is a boy haunted by whispers of a life he does not remember and a power he cannot fully control. When dark forces—the Shadowborn—attack his family estate, Caius is forced to unleash his forbidden flames, revealing a side of himself he fears. Cast out by his father, he begins a journey to uncover the truth about his past and stop a rising darkness threatening to unravel the world. Joined by Elara Belmont, his strong-willed betrothed who refuses to be left behind, and a cryptic rogue with glowing silver runes, Caius learns that the shards of the Demon King’s power are more than fragments of strength—they are keys to breaking the veil between realms. Each shard Caius claims strengthens his connection to his former life, but it also risks corrupting him, pushing him closer to the shadow of his past. Meanwhile, a mysterious masked figure leads a faction determined to bring the shards together and resurrect the Demon King. They believe Caius is the catalyst for their plans and will stop at nothing to claim the shards—even if it means destroying the fragile balance of the world. As Caius battles Shadowborn, unravels ancient secrets, and faces trials that test his humanity, he must decide what defines him: the monster he was, or the man he wishes to be. But with every step, the shards whisper to him, pulling him closer to the edge of destruction. The world’s fate hinges on Caius’s choices. Will he wield his power to protect or destroy? And can he resist the pull of the very destiny he swore to escape? The Demon King’s Last Oath is a tale of redemption, power, and the enduring struggle between fate and free will. First time writing this type of novel. So please support me.

[Warning: Mature Content R18] Liam’s first date with his longtime crush was supposed to be a dream come true—until a speeding truck brutally ended his life. But even after death, he didn’t find peace. His soul was condemned as an error soul, forced to wander the void between life and the afterlife for centuries. Until one day, he met with Lilith, a seductive succubus who offered him an escape—a chance to be transmigrate into a new world. However, her offer came with a heavy price: He must steal the seven wives of the Demon King, each a powerful head of the six other clans of sins. Success would grant him great power beyond imagination, and failure would only lead his soul to eternal doom. Desperate to escape his torment, Liam accepts her proposal. He then transmigrates as Liam Wilshere into the world of Atras, in which humans were engulfed in a holy war against demons. A world where magic, gods, and many other things he previously considered as fantasy existed! Armed with nothing but [The Divine Lust System], a gift given to him by Lilith to aid in his rise to the top. Through intimate encounters with women, he could amass limitless strength, gaining elemental abilities, legendary skills and godlike physiques! Accompany Liam in this new world, as he rises from a hopeless orphan to the world’s strongest demon lord, gathering his harem and building power to take on the Demon King himself! ***** Additional Tags: MILFS, No NTR, Netori, Sexy Nuns. Note: This novel is only fiction and isn’t in any way related to real life.

The Venerable Xiang Yu, an eccentric villainous half-blood demon King was infamous in both the demon and human realm for being a cold-blooded ruthless devil that could kill with no remorse. Demons and humans feared him, cultivators wanted him as a trophy and the immortals saw him as a thorn in their side. The only reason he didn't get smote by the Heavenly King's searing lightning of divine wrath that could kill all mortals and immortals was because he kept the deadliest demons in check maintaining peace between the two realms. Despite his reputation, he had a small cult following in the human realm. They took him as their deity for his selfless acts of benevolence. Such rare selfless acts led him to rescue the fallen immortal Han Xin. But his benevolence became his downfall. Condemned to death, he faced an impossible choice: serve the Heavenly King or die with no marked grave. Xiang Yu: Hahaha... death isn't so bad after all. Heavenly King: You... Han Xin: Wife, you can't escape even in death. At least when you are alive you have a chance to run. Xiang Yu: QAQ...

[MATURE CONTENT] Arella is an angel. Well, she used to be an angel. A real, bona fide, halo-wearing, wing-flapping celestial being. That was until one tiny whoopsie where she unfortunately burns a pair of wings at a banquet happens. Fine! There was more than one tiny whoopsie. Fast forward a few hours later, and Arella found herself booted from the pearly gates with nothing but her wings and an eviction notice. Her family called it a "vacation." Ha! A vacation, in the human realm of all places! One hundred years later, Arella calls it her new life. Turns out, living among humans isn’t half bad—especially when you can turn invisibly smug at their lack of ability to fly. Early retirement has never been so blissful. That is, until the heavens smack her face with a message: Arella’s back on duty. And her new job? Marry. The. Demon. King. Wait, what?! Marrying the Demon King isn’t exactly on Arella’s bucket list, especially when demons and angels have been sworn enemies for eons. But orders are orders. So, off she goes, wings drooping and attitude cranked to full sass, to meet her new husband—a devilishly handsome demon who seems unnervingly smitten with her. Not to mention the heat that surges within her the moment she lays her eyes on him. Cue in dinner dates, fiery arguments (literally), and a series of catastrophes involving Arella purposefully setting a demon's hair ablaze with her holy fire. But as Arella settles into this bizarre celestial-demonic union, she uncovers a sinister plot that threatens not just her marriage but their entire reality. Turns out, angels and demons might have to join forces to stop a threat that neither side can handle alone. And Arella? She might just be the unexpected key to saving everyone. Armed with nothing but her quick wit, trusty angelic powers, and a painfully doting husband who may or may not leave her love notes carved into rock when she is angry, Arella must navigate battles, betrayals, and the occasional marital spat to protect their world. After all, nothing says “happily ever after” like saving existence itself, .... right? Right? One fallen angel. One absolutely smitten demon king. And a whole lot of chaos.

I am the 36th Demon King, the weakest in my empire’s history, yet I wield the shadow powers of the first Demon King—the God Slayer. For two thousand years, our kind has waged war against humanity. But this time, I crossed their borders not as a conqueror, but as a wanderer drawn by whispers of a devastating pandemic—a plague that spares no race, ravaging humans, elves, and demi-humans alike. In the shadows of their suffering, I found myself doing the unthinkable: helping them. Saving lives. Easing their pain. And to my astonishment, they began to hail me as a hero. Yet a question looms over me: Should I continue this masquerade as their savior? Or should I remind them of the truth—the Demon King who stands at the edge of light and shadow, deciding their fate?

Author's message to webnovel readers: Hello everyone, I’m Morning Star LL! Meet again, huh! Along with "This Game is Too Real" another novel titled "The Lord Demon King is Unfathomable!" has been released. Still one "player + isekai" combination. This time, however, the isekai is a completely fantastical world detached from reality, the legendary realm of swords and magic. The primary motivation behind writing this book was to address the regrets left from "This Game is Too Real" Although I endeavored to incorporate as much of my intended message and the creative ideas that emerged during the writing process, I had to give up many ideas due to length constraints. Thus, I thought why not start from scratch and write about a game set against the backdrop of a fantasy world, shifting the focus more on the original inhabitants of the isekai rather than the players from Earth, to see if it could generate more interesting interactions. Like "This Game is Too Real", "The Lord Demon King is Unfathomable!" primarily features a light-hearted and humorous style. Without the burden of a serious overarching background, the overall tone is somewhat more cheerful than "This Game is Too Real". I'll leave the rest of the content for you all to discover within the book! I hope that you will enjoy my work! Thank you! by Morning Star LL —————————————— Succubus Reporter: "Respected Lord Demon King, I remember the Demon God ordered you to spread panic among our enemies, but how come I've heard that you bought an entire street in the enemy's city center?" Luo Yan: "Foolish! Don't you understand tactical relocation? If I buy up the humans' city, won't the humans have to move into my underground city to live?" Succubus Reporter: "However, I heard that when the humans learned even the Demon King was buying property in the Holy City, not only did it fail to cause panic, but it also doubled the property prices in the Holy City." Luo Yan said smugly. "This precisely proves that my plan is correct!" Meanwhile, in the underground city, the skeletal miners (players) were making a fuss. "Get the game designer out here!" "What happened to promised divine pets, divine equipment, nurturing, achievements, the marketplace, junior female fellow practitioners, senior female fellow practitioners... the system, huh?" "Is this game really just about mining?!"

Demon King Nefarius is betrayed by his aide and kidnapped by hero Tokiya. 　When he wakes up, he finds himself in a woman's body!? Demon King Nefarius decides to return to his throne as Demon King. 　Hero Tokiya says he will help him. The two decide to work together for their goal, and at first, the relationship between demon king and hero is incompatible, but as they get to know each other, their relationship becomes...!? And various trials await them!!

Fourteen years of war nearly destroyed the world. Seven years of peace have barely held it together. The Seven Nation Army, forged from the ashes of World War III, stopped the bloodshed and vowed to protect the fragile balance. But peace has a price—and not everyone is willing to pay it. A shadow looms over the fractured world. The New World Order, a ruthless organization born of chaos, plots to tear apart the fragile ceasefire. Their vision? Burn the old world to the ground and rebuild it on their terms. At the forefront of this conflict, Bravo Squad stands as humanity's shield. Led by Captain Sohel Choudhury, callsign "Ghost," this elite unit faces a daunting task: unravel the NWO's plans before the world is plunged into World War IV. But trust is scarce, alliances are fickle, and the battlefield is no longer confined to nations—it’s everywhere. Victory isn’t guaranteed, but failure means the end of everything. — “If taking one life can save a thousand, we have to pull the trigger. If that one life is at the end of your barrel, and you won't be able to take the shot, leave this room right now. Because if you don't take the shot, your enemy will. And he won't hesitate. I assembled you here to win a war, not to turn all of you into cannon fodder.” Sohel took a deep breath and looked out over his squad. “Now, let me ask again, does anybody want to leave? Does anyone here think that he'd not be able to pull the trigger?” The room buzzed with one synchronized sound, “No, sir.”

In a world where supernatural creatures exist, Lyra, the daughter of the Alpha King, discovers that her mate is not the vampire prince she's been betrothed to, but a human boy named Tyrese. As Lyra and Tyrese navigate their forbidden love, they must confront the danger that comes with their relationship. Prince Kael, the vampire prince, is determined to claim Lyra as his own and will stop at nothing to destroy Tyrese. But Lyra and Tyrese's love is strong, and they're determined to fight for their right to be together. Along the way, they discover secrets about their families' pasts and the supernatural world they live in. Will Lyra and Tyrese be able to overcome the obstacles in their path and be together, or will their love be doomed from the start?

Hello, my fellow demons disguised as readers, It's your king talking. I was a Demon King, and I still am…kinda… I am talking to you through a villain system God gave me. Yes, you heard me right…A God…I made a deal with a God and am being forced to do some heroic shits I normally wouldn’t do. But I didn't become a Demon King by doing easy things. So Your Majesty is on his mission to break the system and find a way to kill The GOD….Because no one…Not even God can control me… Join me on my journey, little demons, in this magical fantasy world where I plan to become an absolute ruler while having fun with lovely ladies because why not? But before you delve deep into my story, let us clear something 1. This is not your typical grandpa’s fantasy novel, this is pure fantasy with really fucked up darkness 2. Romance is pretty explicit and real 3. People in this world are not two dimensional idiots, they are evil and cunning. 4. Lots of blood and gore because I am the Fucking Demon King. 5. Finally, Expect the Unexpected. Now that we cleared these main points, take a cup of coffee and join me…

[Warning! Mature Content! Op MC with large Harem!] _____ [Ding! You have successfully tamed Succubus Queen Lilith... Placing Dominion Mark...] [Ding! Your marked demon has comprehended a Divine Ranked Ability... Multiplying rewards by 10 times...] [Ding! You have received Chaos Ranked Ability...] _____ Creed Walden died the way he lived—single, frustrated, and still a virgin. But who knew death was just the beginning? When he opens his eyes again, he finds himself in Demon’s Dominion, the brutal fantasy novel he read ten years ago. Here, strength reigns supreme, and humanity’s survival hinges on their ability to fight off the relentless demon hordes. But Creed isn’t just any reincarnated soul. He’s been granted a legendary SSS-ranked talent, “Demon Lord,” giving him the power to tame the very demons that humanity despises and fears. To complicate matters, Creed soon unlocks the Demon Dominion System, a powerful tool that allows him to bind to demons by marking their souls, gaining absolute control over their lives in exchange for their trust. The system rewards Creed with 10x growth in strength and abilities each time a bound demon reaches a milestone, making him a powerful force the more his army grows. But as Creed dives deeper into his new world, he realizes there’s more at stake than he ever imagined. In the story he read, an even more terrifying power lurks behind the demons’ war against humanity: the angel race, a cold, ruthless force with a divine agenda. The angels are manipulating the demons, forcing them to invade and weaken humanity. And once they’re done using both sides? They’ll wipe out demons and humans alike, leaving only their “holy” empire to rule the world. This time, he has a plan: he’s going to build his own force, starting with an army of succubi—the seductive, elite leaders of the demon race—and claim their loyalty to him alone. Armed with forbidden powers and his growing succubus army, Creed knows he’s humanity’s last chance. With every encounter, he gains strength, preparing to face the heavenly threat that no one else knows is coming. He’s racing against time, against divine manipulation, and against his own weaknesses. The angels are ruthless, the demons are on the brink, and Creed’s destiny is about to ignite a war that no one saw coming. He couldn't help but ask himself, "Am I the Demon King or what?!" [WebNovel Rising Star II Entry] ALL SUPPORT is appreciated. Don't hesitate to add it to your library and give Power Stones!! Warning: Yandere!

(Each chapter are really long, basically I combined 3 chapters into one.) I never imagined becoming a Demon King inside a novel. Worse yet, I didn't inherit the Demon King's power, leaving me incredibly weak. On top of that, I must face the protagonist in the future, knowing he is determined to kill me because of his hatred for demons. Now, I'm left with two choices: either I grow stronger and take down the protagonist to survive, or attempt to befriend him against all odds. However, that's not the point because my real goal is to live a peaceful life without any conflict, but as a Demon King, that seems impossible to avoid. Ah, dammit! Just thinking about it already stresses me out! Whatever! My life comes first, so I'm going to do whatever it takes to stay alive!

Dimitri always found life boring. After being transported to another world where hero's and demon kings live, he decided to become a demon king and live a truly free life.

The great war between the demon king Sirius and his older brother the god of death Anubis result in Sirius being sealed by Anubis , which result in Anubis experiencing the fury of the goddess of moon Abylay , Sirius lover . After 20,000 years of hard work Abylay was finally able to break the seal with the help of her parents , the Sun God Ra and the ruler of the ran race Cyra , they reincarnate Sirius as a human . This story is about the journey of the demon king Sirius and how dispite being in a human form and how he got his power back , take his revenge and dominate the world . ****** Other name of this novel , The demon king ' s revenge Rebirth : My lover is a goddness

"I'm one game away from reaching the master rank! I'll do it tomorrow, though. A true gamer knows when to refresh his mind and increase his victory chances!" Adam smiled in anticipation as he went to sleep on this special day. However, he could never have imagined the surreal awakening that awaited him. "What's wrong with my voice?!"  "Claws? A tail and horns, too?" [Welcome to the demon realm. You have been selected to reincarnate as a Lord. Conquer this realm of fire and ashes, become its uncontested ruler... or die trying.] Reincarnated as an imp in the cruel demon realm, at the borders of the mythological demon Baal's territory, his life seemed doomed from the start. However, determination sparkled in his eyes as against all odds, he defiantly proclaimed. "No matter who decided to make me start as an imp, watch as I turn into a veritable devil. Even Baal won't hold a candle against me in the future!" Equipped with his unique talent, he started his lord's journey, ready to evolve and prove to those strange realms that demons were more than violent and deceptive creatures... at least he would try. ----------------------- Welcome everyone! This is my second book and my WPC entry. I hope you'll enjoy the journey. You can expect a mix of gods/demons from almost every pantheon and mythological figures, like Heracles, Wukong, Muramasa, Achilles, Merlin, Cu Chulainn, and many others! Please do check out my first book if you enjoy fantasy stories. :)

WSA 2025 Entry #wsa #wsa2025 Demon Kings. The Strongest Demons who stand at the peak of the Demon race’s hierarchy. Each one of them wields such overwhelming power that they sit at the top of the Universe’s food chain; among its strongest beings. When the reborn Xaren laid eyes upon the visage of one of these Demon Kings, all he could feel was endless admiration towards the immense power displayed. At that moment, he gained a goal to strive for in this second life of his. He was originally just living to survive, but now, he was living for something else. The path ahead was going to be rocky, riddled with trials, and standing in his way forward would be the many horrors that lurked in the corners of the Universe. But he’s not gonna let that stop him. After all, he’s Gonna Be a Demon King! [Check out my other stories from my profile: Godslayer’s Legend, Reincarnated Hero System & Beyond the Bloodline] ◇　◇　◇ Discord Link: https://discord.gg/ZXyAjGtS4r ◇　◇　◇ Support Me: https://ko-fi.com/michae_l

After a freak accident, our hero wakes up in a whole new world... as a strange black blob! No hands, no feet—just a squishy, bouncy creature. To make things even weirder, a group of terrifying demons bows down to him, convinced he's their born-to-be 7th Demon King. But here’s the catch—he doesn’t want to be the Demon King! He just wants to live peacefully. All he wants is to figure out how to get his body back and live a quiet life. Instead, he’s stuck pretending to be the mighty Demon King, trying to dodge dangerous battles, avoid the coalition of the four races out to defeat him and stop the possibility of the 7th Demon King being born. Can a squishy blob survive being a ruler of the demon race, or will he accidentally become the most laid-back Demon King in history? Get ready for a laugh-out-loud journey full of crazy battles, wacky transformations, and one very confused black blob! Note: 1. Slow-paced story. 2. There is no female lead in this book.

After inheriting parts of the power of the great Demon King, Alec must fight against the urge of being consumed by it and the powers that awakened with his birth. In a world ravaged by demons, can he, someone regarded as a demon's spawn, fight against the origin of his strength and prevail?

Adam an every day accountant die and goes to the hell on technicality you weren't evil but you didn't do any good either said the God of judgement what the fuck does that even mean he asked ? but before his soul could go through eternal damnation an Demon God gave him an chance to escape will you be my apostle and bring humanity to its knees Do i get some OP cheats ? (Adam asked) Yes (Demon God) then count me in (Adam) ***** Just because mc is apostle of demon god don't expect him to be an evil monster he will do what he want not what other want him to do read to find out what that is you will see some R18 scenes as some dark moments too MC will be OP at start but tha does not mean he will be invincible there will character just as strong if not stronger **** Tags - Slaves , Superpower , Magic , Kingdom Building , Academy , Dark

Synopsis: Alexander Drake was an ordinary office worker on Earth, living a monotonous life until a tragic accident abruptly ended it. When he opens his eyes again, he finds himself in a completely different world—a dark, ancient kingdom ruled by demons, where power is the only currency. To his shock, he discovers that he has been reborn as the weakest demon in the lowest caste. However, fate has granted him a unique Demonic Ascension System, which allows him to absorb the power of defeated enemies, learn forbidden spells, and rise through the ranks of the demon hierarchy. As Alexander navigates this brutal world filled with ancient ruins, powerful demon lords, and otherworldly creatures, he must harness his system to survive and thrive. His ultimate goal: to become the Demon King and reshape this world according to his vision. But the more power he gains, the more he uncovers the dark secrets of this realm and the truth about his rebirth. Was it really an accident, or is there a greater destiny awaiting him?

*Author's other work (The Dragon Prince's Bride)* *** After surviving the utter destruction of the entire world, Kiva Quin and her best friend Skye Gailey find themselves in another world. The world of the ones who destroyed their home. The world of the demons. Kiva, who never believed in the existence of demons, now has to live in a world full of them. They've taken her family from her and thus she harbors a hatred, vowing to take her revenge and kill the one responsible for the destruction of her world: Leonis Rein; supreme ruler of the demon world. Leonis is a man who doesn't believe in love. He believes in taking possession of whatever catches his attention… And she did. He meets Kiva, and her aggressive, persistent nature draws him to her. Slowly, Leonis starts harboring an unhealthy obsession for Kiva. Kiva would do any and everything to put a knife in the heart of Leonis, or die doing so. But Leonis doesn't plan on letting death take her. At least not yet. *** Excerpt Holding both my hands tightly together behind me with just one of his own, Leonis pressed his broad chest upon my back as I wriggled and try to get out of his stronghold. A gesture I knew was futile because he was strong, very strong. "Run if you like." His whisper sounded next to my left ear, and I wished to deny it, I wished to tell myself I don't feel it, but I do. I feel a certain tingle every time this demon is this close to me. "I will pursue you. Hide if you must, I shall find you, and die if you choose, I shall make death cough your soul back into your cold body." I knew it. He will never let me go.

Humans across the world ended up joining a “Demon Kings and Heroes game”. Several billion people were set down upon another world to act as “Demon Kings” and “Heroes”. Everyone has to choose their starting races from the start. Zhang Nu was set in the Demon King camp. He discovered that he could see hidden information that no one else could. [Slime Demon King]. Low grade demon king bloodline… Not recommended! [Kobold Demon King]. Low grade demon king bloodline… Not recommended! [Dark Elf Demon King]. Mid grade demon king bloodline… Can be selected! [Bloody Giant Demon King]. High grade demon king bloodline… Recommended! [Abyssal Dragon Demon King]. Strongest starting bloodline… Extremely recommended!

Annika never intended to love him. The Demon King, hated by her kingdom, feared by her people—yet he saw her, truly saw her, in a way no one else ever had. In his arms, she found not a monster, but a man with a heart as wounded as her own. But love cannot erase the lines drawn in blood. As enemies rise and a merciless faction vows to destroy Leo, Annika faces the cruelest of fates: to betray the man who taught her love, or abandon the kingdom that gave her life. Every choice comes with a cost, and this time, there may be no redemption. Caught in a war where her heart stands on one side and her duty on the other, Annika must decide what she’s willing to sacrifice. Can love withstand the weight of the world, or will it shatter under the burden of betrayal? And if it does... how will she survive the pieces?

Transported into her beloved novel, Maya, a die-hard fan, expected to save the dashing hero, only to discover he's the villain. Now entangled in a deadly game, she's forced to choose between her growing affection for him and her duty. He leans closer, his eyes gleaming, "You've played your part well, little bird. But the game has just begun." "This isn't a game, Shesha," she replies, her voice bold, "It's a war. And I intend to win." Torn between love and duty, Maya must unravel a web of deceit, where enemies disguise themselves as lovers, and every choice could shatter the fragile peace.

A man played an immersive game that he started playing thanks to his brother. With his brothers help, he got an overpowered build on his character. Unfortunately, his brother died and he stopped playing the game alltogether because it reminded him of his brother. One day he hears that the game is about to get shut down, and he goes there to say farewell to the thing he and his brother spent so much time on. But when the moment where he was supposed to be logged out, he finds himself still in his character. Strangely the NPCs start talking more freely and that the capital city where they were on was suddenly in a strange forest. What will he do in this new environment? What kind of people will he meet? (Note that the setting starts kind of like Overlord, the anime/novel) Surprisingly many parental figures appear in the series, mostly fatherly, though not examplary.

"He's truly a demon!" For years, this demon had tormented humanity. This demon was the Demon King, the vilest evil in known history. With nothing new coming forth, the Demon King decided that it was time to die and is finally executed by the human race. But that was a long-lasting ploy on his part, a ploy to another life. However, the Demon King's plan reincarnate into a life of his choosing fails as the Stream of Life rejected him. This forces him to reincarnate into the body of a young man known as Aaron Winters and lives his new life the way he wanted. This new Aaron would come to discover the secrets of the old Aaron's past and the world as he goes on in this new world while also having the much needed fun as the new Aaron Winters. But then... did he really escape from his previous life? Tags: Slice of Life | Antihero | R18+ | Magic | Smut | Reincarnation | Romance | Adventure | Demon | Overpowered | Harem | Action | Comedy | Ecchi

Lucian Redrazhalf, a once-talented necromancer who spent lifetimes chasing power, meets his end at the hands of the strength he sought to wield. But death is no escape—it is only the beginning. Bound by a sentient curse that forces him to reincarnate endlessly, Lucian has endured countless lives—each more agonizing than the last, as the curse grows stronger with every cycle. Now trapped in the frail body of Louis Duskthorn, the Demon King’s weakest son, Lucian faces scorn from his family and society alike. Yet Louis is no ordinary demon—a rare hybrid of ancient blood, with immense potential locked behind brutal trials. Lucian’s struggle becomes even more dire when he is marked as a commodity for the Soul Market—a celestial realm where lives are traded by fallen gods. With only ten cosmic years before his soul is sold, Lucian must outwit both fallen and holy gods, break the curse that threatens to consume him, and reclaim his freedom. But before any of that, he must survive the deadly infighting of the Demon King’s court and awaken the fragments of power buried deep within his cursed soul.

Hades, one of Pandora's 4 demon kings was killed by his beloved. Except to his surprise, he ended up reincarnating in a strange world, what awaits a demon in a totally different world?