Youang Adult Sci Fi

one night Dan Smith was found dead, police said it was a suicide but his friends didn't think so. Adi, Anne, and Peter had started to find some clues that Dan left for them before committing suicide. What happened to Dan? Was it a suicide or murder? cover design by Mashy Yom

After dying as a soldier for his alien overlords, Elias Varis is reincarnated decades into the past with a System, before humanity’s enslavement. The Prometheus System, a powerful interface that grants him a photographic memory and unlimited untapped knowledge, decades ahead of his time. Armed with cutting, edge military strategies, futuristic technology, and a mind that processes information like a supercomputer, Elias knows that Earth is doomed unless he changes its fate. To unite humanity and prepare for the inevitable invasion, he joins the Western Military Academy, hiding his abilities while secretly shaping the foundations of war. With time running out, Elias must outthink, outbuild, and outfight an empire that hasn’t even arrived yet.  Warning: Reincarnation, military sci-fi, and a broken OP system ahead! Oh, and just so you know, all chapters on Webnovel are free! 

Ethan Walker, an overworked office drone, thought his worst problem was a bad convenience store meal. But after collapsing on the subway, he wakes up in the cockpit of a starship in the middle of a vast galactic empire. Now, stranded in a sci-fi universe filled with autocratic empires, space pirates, alien races, and interstellar wars, Ethan must adapt fast or be left for dead. Armed with his wits and an unpredictable star ship, he embarks on a journey to survive and thrive as the galaxy’s newest mercenary. From office worker to space legend, his adventure across the stars begins!

"How far will you go to save the only home you've ever known?" Tyson never wanted to be a hero! But on his 20th birthday, everything changed. A Meta-bot chose him—fusing with his body, wrapping him in powerful armor, and throwing him into a war far beyond his control. "You are now a Ranger. Fight, survive, or let Earth die." Edward said, "And remember, you don’t choose Meta-bot. It chooses you. And when it does… your life is no longer your own, Tyson" The rules are straightforward. Every few years, the intergalactic tournament commences. Earth gains additional time by successfully navigating the stages. Billions of lives hang in the balance while the battles are broadcast live—nothing more than a twisted form of entertainment for some godlike beings. "You’re not ready for this, Tyson. You’ll get yourself killed." As if fighting for survival wasn’t enough, Tyson must prove himself worthy of the Roger family name, fix his fractured bond with his adopted brother, and navigate his growing feelings for a girl he never expected to fall for—the daughter of a fallen General. But time is running out. "You think this war cares about what you want?" "No, it never has. It never will," a voice whispered. "It’s on you, kid. If you want to survive, then fight for it." ------ This novel blends sci-fi and fantasy, featuring a 'weak to strong' progression. My focus is heavily on character development, so if you're looking for a regular story, then this novel might not be for you! Tags: Action, Adventure, War & Politics, Tournament, Fantasy, Romance, Gore, Death, Brotherhood, Alliances, Dungeons & Maps, Weak to Strong, Sci-Fi x Fantasy, Character Growth, Power Progression, Mecha Battles, Revenge & Redemption, High-Stakes Survival, Emotional Depth, Betrayal. [ I recommend you to give it a read to 30+ chapters before you decide to drop the novel ] [Pease comment if you want to ask questions] [ I updated 1 chapter per day, 7 a week. 50 Power Stones = 1 Extra Chapters 100 power stones = 2 Extra Chapters ] [Your Support will be a massive help to me!]

"I've finally gotten my revenge and eliminated all the aliens. Now what? I thought it was over, but no, it was only the beginning. One day, a mysterious object appeared out of nowhere and began conquering the entire universe. Gates, monsters, and other mysterious primordial beings, far stronger than I could have ever imagined, began to emerge..." What to expect: Fantasy World and Adventure start later in the story. Writing style: 1st person writing will eventually switch to 3rd person writing later in the story as more characters are introduced. Other tags: Fantasy, Isekai, Evolution, Dungeon or Gates, Revenge, Summoning, Sci-fi, a little Romance, Necromancer. Keep reading to find out more. Discord: https://discord.gg/NNeHNANtrd

A week before Earth’s destruction, Xiao Wu merged his soul with a spaceship equipped with an integrated computer and managed to escape the planet just in time. After integrating with the computer, Xiao Wu not only gained immense computational power but also retained human creativity and curiosity. As a result, the initially simple spaceship continuously evolved: its chemical engine was upgraded to a nuclear engine and later developed into an antimatter engine. Its size and mass also expanded over time. As technology advanced, Xiao Wu began experimenting with the construction of a super fleet, integrating various functions such as offense, defense, exploration, landing, and resource collection, ushering in a new era of cosmic conquest.

[ Late 2025 WSA Entry, Please vote ] Welcome to Dimension 619, a world of monsters, mechs, technology and mystic arts, a world of war and despair, a world were magic and non magic are intertwined in the brutal dance of death where one must rise and one must rule, but it doesn't always have to be either that emerges as a victor. After being transmigrated to this world as a newborn with an unknown race and no identity except his name Lucian Azen Zane, our protagonist embarks a quixotic adventure to create an ideal world for his friends and loved ones. Despite been rejected by both sides for his unique ability to destroy magic and his infinite mana production with a system, will he pull through under the facade of building a better world or will he venture down the path of false freedom hereby creating a disastrous hell for those he claims to care about. [ Genre Bending : Sci-fi, Fantasy, War and Military ] [ Tags : Adventure, Action, High IQ, System, Magic, Dark, Overpowered, Antihero, Military, Advanced Technology, Undead, Apocalypse, Mecha, Doomsday, Mystery ]

~Mature Content~ Alex, a broke and normal college student, stumbles across a deal too good to pass up—a high-tech VR headset for just $99.99 with a coupon code. Curious and desperate, he buys it, only to discover a virtual world called The Nexus. This isn’t just any game; every coin he earns in the VR world can be cashed out in real life. There are two Modes in The VR game: General for Normal Gaming/Adult for Adult Gaming. He doesn’t know what happened after playing VR he discovered that he can use the in-game currency he earned through quests can be use in real life. And all the quests are related to Adult Game mode which he selected in the starting.

The world has already been destroyed… It’s too late. The only hope left is to dive back in time and eliminate the source of the apocalypse before it begins. Is it dangerous? Absolutely. Is it a gamble? Without a doubt. Few would dare to risk everything on a mission with no promise of success—or survival. But is it worth it? More than anything. In a post-apocalyptic world overrun by Eldritch monstrosities, Inase, a self-trained monster slayer, and Hosen, a self-proclaimed scholar, are recruited by the Facility, a scientific institute holding humanity’s last hope. Their mission: travel back in time and eradicate the origins of the horrors before they consume reality. With Inase’s lethal combat skills and Hosen’s vast knowledge, the two must work together, navigating a past filled with unspeakable dangers. As they struggle to reverse their dying world, the fate of humanity hangs on a thin thread, and the cost of altering time becomes a hazard for the future. Will they succeed in rewriting history, or will they witness the final extinction of everything they vowed to protect? "Reverse the World" is an exciting sci-fi adventure that blends action, suspense, and cosmic horror in a high-stakes battle against the unknown.

****** Zazm Mystic a young and energetic highschooler, who has developed a great interest in the laws of universe. His love for maths and his curiosity for universe always kept him occupied in books. His childhood friend Jahanox Nova, who is in the same grade as him is the top student of the class. One day Zazm suddenly finds a letter in his back, he initially thought it was a love letter but when he opened it the content of letter was "Once you fall into slumber tonight, your world shall change." He felt confused as to what that letter meant. Until he woke up the next day to realize what it was. (A/N: This will a Sci-fi novel and will be mainly based of adventure and stuff. There won't be any romance in particular. No BL, No GL and No Harem)

In any place, planets in any universe and other worlds, if a threat comes from the outside, everyone will definitely unite to defend their land. And a planet called Earth, it's not exempted. Either luck or fate, human beings was able to discover something strange,,, an alien. The visit was secretive and unfriendly for the two parties to fight for their own believes. Fortunately, the human side was able to kill the lone intruder but loss many lives. With this encounter, the human race took it as a heads-up and made a lot of worldwide preparations; focusing in military and directly eliminate many civil matters. At that time, the main character was about to settle down, have a family on his own and enjoy the rest of his life but didn't expect for such a big thing to happen. Lucky he was, had an adventure for him to have the ability to protect his beloved and all the people around him. But one man can't cover the whole planet for many people to die and two-thirds of the land to be occupied by beasts sent by the invading enemy. Although humans had lost in the first war, they learn a lot of things for the rapid growth and develoment in different areas, especially in the field of Science and Technology. When the right time comes, it will be humans who will be on the offensive. For sure there's still a big gap to win against an enemy who got the lead, but human beings is a race that will never give up; will never let anyone get what theirs. But at the end, things sometimes won't go as planned to lose something,,, someone...

Fragments of the Infinite Nova Quinn was born into nothing—just another street orphan in a city that devours the weak. Surviving by wit and theft, he never questioned the past. Until the past came for him. A dangerous heist gone wrong leads him to an impossible truth: his parents' deaths were no accident. Their fate is tangled in forces beyond understanding—a mystery that defies time, science, and reality itself. Hunted by a ruthless gang leader and watched by a shadowy organization, Nova’s only allies are a reckless childhood friend with secrets of his own and a drunken traveler who knows too much. As he uncovers clues buried in forgotten myths and advanced technology, the lines between past, present, and future begin to blur. Because in a world where the rules of reality can be rewritten... who controls the truth? Genres: Sci-Fi | Fantasy | Action | Mystery | Adventure If you love: Time-travel twists, betrayals, deep lore, and a slow-burn mystery, this is for you. Start reading now. The Infinite awaits. ---

Arthur Sully was an ordinary man, grounded, determined, but stuck in the monotony of life. That was until fate, cruel and unexpected, struck him down in a tragic accident. When Arthur opens his eyes again, he finds himself in a foreign, untamed world, an endless forest teeming with terrifying monsters, alien flora, and dangers lurking at every turn. Struggling to comprehend his situation, Arthur soon discovers something extraordinary: he can adapt. Each time he faces death-through poison, claws, or fangs, his body evolves, becoming stronger, faster, and more resilient. Thrown into a brutal survival game, Arthur’s resolve is pushed to its limits as he learns to fight, adapt, and master his strange ability. Arthur must confront not only the monsters of this alien realm but also the terrifying truth of his existence. He must Adapt, evolve, survive, or die trying. Tags: World-hopping, Sci-fi, No-Harem, System, Kingdom-Building (2nd Arc). Though the novel has a System tag but it works only as a panel that shows his progress, abilities and has some nifty features. Become a patreon member and read 20 Chapters ahead: p*atreon.com/New_Horizon1 (Remove the *) Free patreon members gets to read 2 chapters ahead! You can join my discord channel to discuss my novel! https://discord.gg/85CGnX9n You can also find artwork of this novel in my discord channel!! 3 Chapters/Week

What happens when a typical normie gets reincarnated to a Post-Apocalyptic World that's a mash up of I have a Mansion in the Post-Apocalyptic World and I am the Last Human? Welp, here's your answer. Granted a certain slime's cheat abilities, watch the story of Martin Maverick as he journeys through a Sci-Fi Post- Apocalyptic World. - - - - - - - - - - - - - - - - - - New Author here, 1st attempt at writing something out as a hobby. Please do forgive the noob writing and editing. Open to suggestions in the comments as I love to create a unique story together with my viewers. If you want to encourage me to write more, send a dollar or two and support me at: https://paypal.me/Ttamped Thanks a lot for visiting this one! Have a great day and stay safe Webnovel pals!

Step into a world where science meets the unknown, where mechas clash in brutal duels, and where every Biocore holds a mystery waiting to be unraveled. Follow Nioh, a genius weapons designer, as he uncovers lost technology, battles biomechanical titans, and pushes the limits of power, in an intergalactic thrilling adventure ------ The genre is Sci-fi. A mix of science and some myths. In a futuristic/interstellar world. The hero is fun, scheming and smart. The science and the weapon building is central to the story and well thought.

In the dystopic world of 2072 ravaged by a ruthless war, Mike is a cyberknight fighting for a regime which promises justice and reforms to a broken world. However, virtue is a fragile concept, especially for an empire built on lies. Eventually, corrupt minds filled with delusion and madness will reveal themselves. When the masks drop, will there still be peace or a future? Blessed are those who can dream, condemned are those who remain in reality. In the dark, resolve is the only path forward. This novel combines fantasy and sci-fi into a story you have never seen before. Give it a try and you will stay for the plot and the high-intensity actions.

Reincarnated into the AV world after offering 100TB of adult videos to a deity, where countless erotic events unfold! AV | Harem | Exhibition | Slave | SMUT

Space Pirate sci-fi.

Rhyme is just a normal student who aspires to become a successful scientist one day, got accepted at Columbia University in New York. She just landed in New York from Paris to fulfill her dreams. But life has something else in store for her. What happens when a science student gets the key to time travel on the same day as her friend whom she loves dies in a car accident? Will she be able to save him by going back in time and breaking the rules of time travel? I won't give out any major spoilers in the synopsis. Read to find out more.... It sounds like a boring typical sci-fi novel but trust me, it's gonna be an emotional roller-coaster. I have tried to cover various genres like romance, fantasy, comedy, thriller, suspense, aliens etc. It won't be as boring as your science class, but I can promise you one thing, it will be 100 times more fun!! P.S. : This is my first novel so please ignore any grammatical mistakes. Also, my updates might not be regular as I am still studying (in final year of high school). Please forgive me for that, and enjoy the novel!

Lucas—a sharp-tongued, fourth-wall-breaking pilot, and in his own opinion, the best pilot in the far future. In a universe where humanity has conquered galaxies, star systems, and built wormholes as intergalactic highways, his journey is anything but ordinary. This is a story about who Lucas was, and what he is destined to become. Along the way, there will be friendship, love, and deep sci-fi elements—all set against the backdrop of political battles between warring empires.

Isekai, self-insert MC, overpowered, science fiction, strategy and spaceship battles. Chat-GPT for chapter 1-8. Starting from chapter 9, I will properly write. This is for anyone who see all of that and are still interested: I want to make a novel with as realistic physics as possible. I will, almost definitely, create a bunch of magical sci-fi stuff, especially later on, but I will try to stick to established rules as much as possible. Much of the orbital mechanics and warfare is learnt from the game Children of a dead Earth and Kerbal Space Program. This is my very first book, so expect no planning and shitty execution, even with GPT.

In the grim future, genetically enhanced humans have evolved into a powerful new species—the Eldkin. Divided into several subspecies, the Eldkin are governed by a council of primarchs—each representing a distinct kintype—who maintain order within the Eldkin Cooperative, and defend it against alien threats. Wars are waged with devastating technology and the supernatural force of myst, a volatile energy fuelling powerful abilities. Meanwhile, ancient marvels known as Astralgates link every inhabited world together, alien or otherwise, for better or worse. In this chaotic universe, Damian Moroi, a Bloodkin and heir to a powerful Eldkin family, is as talented as he is ruthless—manipulative, ambitious, and all too aware of his own charm. But on his eighteenth birthday, revelations about his 'birth' and the genetic origins of Eldkin as a species shatter the life he thought he knew, forcing him to adapt to an uncertain new reality. Damian is forced to retreat for a while, but his ambition burns as brightly as ever. And he intends to satisfy it… on this planet and beyond. -------- This novel has none of the bad things, and all of the good things. Probably. There's no NTR or Yuri, and I've created a fantasy/sci-fi type story with new iterations of the classics. Come check it out.

The Host – A Sci-Fi Thriller When brilliant physicist Dr. Elias Vander pushes the boundaries of human understanding, he unknowingly shatters the fragile balance between dimensions. His latest invention—meant to revolutionize physics—rips open a gateway to the realm of the jinn, allowing dark energy to flood into Coast City. People begin to change, gaining terrifying abilities, and among them is Nate—a young man whose connection to the jinn is unlike anything seen before. As chaos spreads, Nate grapples with the strange entity inside him, an ancient force that speaks to him from the shadows. Is he a hero, a monster, or something far worse? Meanwhile, trapped in the jinn’s realm, Elias fights to uncover the truth behind his disastrous experiment and find a way home. But as the rift between worlds widens, powerful forces rise, each with their own agenda. With humanity’s fate hanging in the balance, Nate must embrace his destiny before the darkness consumes everything. In a world where science and the supernatural collide, The Host is a gripping tale of power, identity, and the price of tampering with the unknown.

In a world ravaged by destruction, Dr. Adrian Voss awakens to find himself reborn—no longer fully human. With cybernetic enhancements and a fragmented past, he must navigate the ruins of civilization, uncover the secrets of the Genesis Core, and survive against mutated horrors and warring factions. As he pieces together his lost memories, Adrian discovers that his transformation was no accident. The fate of humanity now rests on his ability to harness the power within him. But at what cost? In this gripping sci-fi saga, evolution is the only path to survival.

What would you risk to transform your ordinary life into an extraordinary one? Rayan Kelvin is stuck in the monotony of corporate drudgery, working endless hours for a paycheck that doesn’t feed his soul. Fired from his job and abandoned by the love of his life, he faces a breaking point. Instead of giving in, Rayan takes a leap of faith, driven by ambition and an audacious dream to reshape his destiny. From a small apartment to the helm of Neural Nexus, a groundbreaking AI company, Rayan battles betrayal, sabotage, and fierce competition. Along the way, he navigates tense partnerships, global expansion, and the complexities of success—all while seeking to prove to himself and the world that greatness lies in resilience and innovation. "From Office to Riches" is a gripping novel of ambition, betrayal, and redemption. It’s a story about chasing dreams, making sacrifices, and discovering what truly matters when the allure of success begins to overshadow everything else. Perfect for readers who love stories of triumph and turmoil in the corporate world, "From Office to Riches" will leave you questioning: How far would you go to turn your dreams into reality?

What would you do if, on your deathbed, you were offered one last game? Would you choose a grand adventure? A tale of romance? A world to rule? Kayle made his choice—an adult game. A game he never got to experience in his first life. But instead of indulgence, he wakes up at rock bottom—a lowly servant boy in a crumbling brothel, trapped in a city on the brink of ruin. His goal remains the same: to enjoy the story he never got to play. Unfortunately, his very existence is already rewriting it. One day while walking through the streets of the capital city's slums, everyone suddenly bowed down to me. "Greetings! Godfather!" **** Disclaimer 1. "Is this a harem?" A common question from my previous novel, so I'll address it upfront. No, it is not. At least, not in the traditional sense. He'll have relationships with many girls, but most of them will be a fling. There will only be one final heroine. 3. If you decide to give my novel a try, first, thank you! Second, I would love if you could leave a few comments or a review. The feedback and confirmation that people are reading my book helps to keep me writing. 4. There is no smut in my book. I repeat, there is NO SMUT in my book. I know the title can be misleading, but I assure you, there is no smut in my book. (Important things should be repeated three times.) 5. I'm currently working on fixing my update schedule, but it should be sorted by March and will most likely be 3-4 chapters a week.

a guy, a famous actor, gets isekaied as a frog into a fantasy sci-fi world and uh becomes the protector of magical beings, the hero of the forest, the villain to the humans, humanitys hero's worst enemy

{WSA ENTRY} Planet X was built to be humanity’s next utopia—a thriving city far from Earth. But for five kids, something feels off. Every morning, everything resets. At first, they think it’s just déjà vu, but the cracks in reality grow impossible to ignore. Time loops. Objects move before they touch them. People repeat the same words, the same actions—except for them. As they search for answers, they realize they’re not just trapped in a cycle—someone, or something, is keeping them here. The deeper they dig, the more disturbing the truth becomes. The city’s origins, the failed experiments, the shadow that watches them from outside the loop—it all points to a terrifying reality. The loop isn’t just a glitch And they’re not the only ones inside. With time running out, they must make a choice: escape and risk everything—or stay and lose themselves forever. But some doors were never meant to be opened. And now the final reset begins NO YURI!, NO NTR!, NO ECCHI!, NO SMUT SCENES I THINK?not sure hehe. MOSTLY SCI-FI. Support me with daily power stones. DISCORD LINK: https://discord.gg/HxwKtaMt

Rebirth Protocol In a world long abandoned by civilization, Dr. Zephyr Cain, a visionary CEO and cybernetics genius, awakens from cryosleep to find everything he built reduced to ruins. His corporation, NovaCorp, once at the forefront of human advancement, is now a distant memory, and the world above has become a war zone where rogue AI, mutated horrors, and fractured human enclaves fight for dominance. Guided by his AI companion, NOVA, Zephyr soon discovers that he is not the only one who survived. Other powerful figures from his era—rival CEOs, warlords, and visionaries—have also awakened, each with their own vision for the future. Some want to rebuild, others seek to conquer, and some have already begun their rise to power. With his cybernetic enhancements and technological prowess, Zephyr embarks on a treacherous journey to activate Project Rebirth, a last-ditch initiative designed to reclaim humanity’s lost legacy. But as he gathers resources, allies, and lost NovaCorp technology, a sinister force lurks in the shadows—one that remembers his past sins and is determined to stop him. Betrayals, power struggles, and remnants of a forgotten war threaten to consume him. Is Zephyr here to restore the world… or will he become its greatest tyrant? In this action-packed sci-fi epic, where the line between man and machine blurs, the future is no longer written—it is fought for.

[SPIRITY WSA ENTRY - VILLAIN] When I was in middle school, my favorite genres were always Sci-fi and Reincarnation. So, when I heard that I was going to be reborn into a world of advanced AI and high tech, my excitement went through the roof, knowing that I would be reborn into my dream world. But that's not the only reason why I'm excited, because I knew to myself that in this life I would finally have a chance to find my cute heroine!! that's right... My ideal heroine... However, Little did I know that my heroines were all originally villainous villains?!!, whose fates are to destroy the world?! "Ahh shit...." ======== [Benefits of adding this to your collection] -Characters and worldview Illustrations for y'll! [Exclusive illustrations] -2.2k words per chapter for the first 10 chapters of the story. -Consistent weekly updates for you all! -It's free and accessible to read. -Writing development. -Update every 6:55 P.M / 18:55 (UTC+08) ======= Discord: https://discord.com/invite/pZHbXYjz