Cardiac Cycle Physiology

From the moment a life-giving planet begins its rotation, it becomes a silent witness to the ebb and flow of countless civilizations. Empires rise from the dust only to crumble back into it. Species emerge, thrive, and vanish into the annals of forgotten time. Through relentless storms, volcanic cataclysms, and the shifting of continents, the world continues its tireless cycle, indifferent to the fleeting lives upon its surface. Nothing in its grand design remains eternal. Change is the only constant, as the very essence of existence is shaped by upheaval. In this crucible of adversity, where nature’s wrath tests the resilience of life, only those who evolve—who embrace the necessity of transformation—can stand at the precipice of survival. To endure is to adapt. To adapt is to conquer. And only through this relentless evolution can one grasp at the elusive thread of perfect victory.

Ethan, once hailed as a hero and a prodigy, finds himself betrayed by those he trusted and condemned to death. In a new world granted by a mysterious goddess, Ethan is reborn with the power to command the elements and the determination to change his fate. As he rises to become the new Demon King, he must confront his past, the corruption of his former allies, and his own inner turmoil. Will he fall to vengeance, or can he break the cycle of destruction and forge a new path for both demons and humans?

Two powerful beings, one who controls the fiery power of the sun and one who controls the abyssal power of darkness are in a constant cycle of fighting, dying, forgetting, and reincarnating. After another long life of constant fighting the two die and are forced to go through vastly different challenges with their memories intact and fate out of their hands. Now they have to try to figure how to regain their strength in these different environments they have found themselves in. The question is will they continue their fruitless fight for dominance or will they change their ways and fight for a better future.

Stuck in a seemingly endless cycle of rebirth Alex, a modern thief, tries to find his way out. Xianxian-ish style (more or less) cultivation novel. A birthday gift to my dear brother Tom.

In a freak alchemy accident, the omnipotent Extreme Alchemist of his generation was bound to the continuous cycle of worldly existence. His fallen soul was reincarnated into the body of an ordinary young man named Fang Lin. From then on, Fang Lin became the chaotic mess of an alchemy genius. "You’re nothing but scraps before me. I am the almighty Extreme Alchemist! So, you’re a martial arts genius, huh? Come...Come. Come! Have a taste of the elixir made by the great master." The path of becoming an extreme alchemist was rough, bumpy and rugged, but at the end, the Mighty Cauldron awaited beyond the Nine Cauldrons!

In the distant future, humanity has restarted its cycle, returning to those primitive times, now in space. This book tells us the story of that hero who freed us and brought us a dazzling future.

Gårdën ōf Édhën: Dîvînë Līnëägë explores the aftermath of the creator’s departure and the rebellion of his once-divine creatures. Twisted into bizarre, supernatural beings, they now inhabit a chaotic realm where survival is a constant battle. Without their creator’s guidance, they grapple with their strange new bodies and an unsettling power to shape even stranger things. As war and mayhem consume the garden, they face a harrowing question: Can they find purpose and unity in a fractured world, or are they doomed to an eternal cycle of conflict and meaninglessness?

In the chaotic realm of Kyyrin, where draconic deities spiral in a deadly dance of death and rebirth, driven by the whims of worship, stands the cunning draconic demon goddess Yuuna. Bound by an ancient cycle, these gods continually perish and are reborn, stripped of memories, doomed to a fleeting existence. But Yuuna harbors a dark secret—her heart is the key to breaking this eternal chain. Desperate for salvation, the divine beings unite with a sinister intent: to kill Yuuna and seize her heart. Enter Xyenn, a 19-year-old with nothing but contempt for gods and a thirst for revenge. Yuuna, ever the strategist, binds this unlikely hero to her cause, sharing her formidable powers with him through a binding contract. Together, they dive into a maelstrom of divine conspiracies and battles. But amidst the chaos and battles, could there emerge an unexpected bond, perhaps love? Or does their alliance simply herald more destruction and sorrow in this god-forsaken world? Only time will tell in this high-stakes game of gods and hearts.

In the ancient kingdom of Solvara, where life is governed by the eternal cycle of death and rebirth, the souls of the departed are reincarnated to fulfill their unfinished destinies. Selene, a lowly apothecary in her current life, begins to experience vivid memories of her past existence as Lysandra, the betrayed queen of Solvara who was murdered by her own husband to claim the throne. As the memories flood back, Selene realizes that her rebirth was no accident—it was orchestrated by a powerful, vengeful force in the celestial realm. With the ancient magic of her past life awakening within her, she sets out to reclaim what was stolen from her: her crown, her kingdom, and her life. But her vengeance grows complicated when she encounters Damon, a mysterious warrior bound by the same cycle of reincarnation. Damon’s soul reveals itself to be that of Kieran, her murderer and former husband. Yet something about Damon is different—he bears no memory of his past sins and seems determined to help Selene on her quest. As love rekindles between them amidst the chaos of rebellion and forbidden magic, Selene must decide: Is Damon the same man who betrayed her, or a victim of the cycle’s cruel twists? Can she forgive and forge a new destiny, or will her hunger for revenge destroy them both—and plunge Solvara into an eternal darkness? With rebirth comes redemption, and with revenge comes reckoning. Only the flames of their choices will decide what rises from the ashes.

this series follows (Jin tae-hyun/Jordan) A high school student, worn down by relentless bullying, decides he's had enough. Determined to fight back, he takes a stand not just for himself, but to dismantle the toxic system that allows bullying to thrive. Balancing his mission for justice with protecting his younger sister, he discovers the courage to confront his fears and inspire change, even as the challenges grow more dangerous. as he uncovers deeper truths about the society, friendship and his parents identity. he learns that power is everything. this series explores themes of self-worth, social prejudice, and struggles of fitting into a hyper-violent world

Everything functions in a cycle, be it an ant, bird, lion, human, or even a celestial body. This cycle initiates with one's birth and governs one's end, yet there exists the potential to surpass it. Among the billions of planets floating in the cosmos, destined to merely occupy a void, some have the capacity to ascend, reaching new dimensions, standing shoulder to shoulder with realms like Heaven and Hell. --- Vlad, a young man, found himself ill-fitted in a world that scarcely offered him any luck, weighed down by a mysterious secret that initially seemed more of a burden than a boon. Yet, the powers he had dismissed as trivial eventually became his most formidable strength when the apocalypse broke, unleashing literal pandemonium as angels and demons walk among the human race. ---- Discord link: https://discord.gg/am5hkAdmhp Weekly updates: 14 chapters 100 Power Stones: 2 extra chapters 200 Power Stones: 4 extra chapters 300 Power Stones: 6 extra chapters.

After being confined in a mental asylum for years, Jin Jiuchi had just been released back to human habitation when he suddenly found himself trapped in a dangerous and thrilling survival game. Wait, is there something wrong with you all? Why do you look so scared? This world is so… exciting! For Jin Jiuchi, this beast in human clothing who was chained by society laws, the appearance of the Nightmare Cycle was akin to a dream come true! Drinking tea with a dismembered bride in a haunted apartment, dancing tango with the evil spirit in the depths of suicide forest, skipping rope with the ancient god in a forgotten civilization… Jin Jiuchi was so happy that he was going crazy! However, when he went crazy, all the players and NPCs in the cycle trembled in fear. *** There was only a beautiful jade doll who had never been afraid of him. Shen Nianzu called out softly, "Jin-ge." Jin Jiuchi, who was happily digging through a rotten corpse's stomach, suddenly dropped everything and zoomed in front of Shen Nianzu with a speed invisible to naked eyes. His eyes were curved into crescents as he asked, "What's wrong, Nian'er? Do you want to join me too?" Shen Nianzu was expressionless as he stared at the bloody man in front of him. Then he suddenly stretched out a hand, palm up. Confused, Jin Jiuchi placed his dirty paw in Shen Nianzu's hand and shook it. Shen Nianzu: “Good boy.” Jin Jiuchi: ? *** Lunatic drama king, wild beast gong x big beauty, cunning, strong-acting-weak shou Additional tags: top/gong/seme protagonist, action, supernatural, psychological, mystery, slow romance, ghosts, gore, monsters, beasts, shameless protagonist, survival game, teamwork, unlimited flow, horror, suspense, younger love interest Find me on: Instagram: delanasiwarka Discord: delanasiwarka#1490 Discord server: bit.ly/delanadiscord

Asher Lee's world shattered when Oblivion brutally slaughtered his mother, leaving him scarred and consumed by an insatiable thirst for vengeance. Now 14, Asher's rage fuels his quest for superpowered retribution at Hero Academy. Tormented by nightmares and haunted by his past, Asher's relentless pursuit of destruction may ultimately destroy him, forever trapping him in a cycle of hate, loss, and tragedy. "Even if my mind breaks,even if there's nowhere left to turn to I wouldn't give up until I kill them"

“So, this is the end, huh?” As proud as I was to have mastered my favorite game, it still felt bittersweet to see it come to an end. [Would you like to play the next cycle? YES/NO] “What the hell?”

A young doctor felt exhausted by the hospital environment, the pressure from patients, time constraints, and the endless cycle of studying and exams. Finally, he made a bold decision: to return to a remote village and work as a doctor there, away from all that stress. In this monotonous life, there was only one thing that managed to ease his sadness a little. It was a small novel that a patient had given him. Unexpectedly, an unforeseen accident caused him to reincarnate as a minor character in that very novel. “Hahaha… At last, I can escape from that dull world!” "Now I'll use this knowledge to seize all the treasures and secrets meant for the main character... enough for me to live a peaceful and luxurious life in this world." ... "Wait, something’s wrong." "It seems the novel I read was just a poorly made copy of this world.” Everything was a surprise when the knowledge he possessed turned out to be a poorly replicated, predictable version, while the real world was the complete opposite. Here, the main character was decisive, shrewd, ruthless, killing without a second thought. The side characters were constantly entangled in cycles of killing and scheming. Not to mention, the fate of this damned world seemed to be like two sides of the same coin.

A kind hearted young man–Yan Ming wants to escape the life and death cycles of mortals, however he only jumped from one cage to another as he realizes the dark truth about the cultivation world. (Inspired by Renegade Immortal) 1. Not edited (Might reedit if I finish writing–likely not)

In the year 563 of the 333rd Lunar Cycle, the prophecy warned of a cataclysm that would annihilate Planet Arai and ripple across the 4th Galaxy. But the disaster came early—or so the people believed. In a single night, 95% of Arai’s population was wiped out, leaving the survivors to grapple with the horrifying truth: this was no prophesied calamity. Instead, it was a catastrophe triggered by human interference with the orbits of the planet's moons. But the biggest mystery remained—who was responsible? Two years after the event, Jaxon Altair, a determined scientist burdened by the weight of loss, uncovers the truth behind the so-called 'cataclysm.' The solution is both daring and perilous: to travel back in time, undo the damage, and prevent the tragedy from ever occurring.

Lena feel's like her sister Hana is snaching everything away from her because of the way she is very popular in the entertainment cycle or rather a celebrity. She is everyone favorite and on top of that, Hana is quite lucky to have a boyfriend who has a strong family background and quiet wealthy too. Lena just can't tolerate the way Hana life is colourful. Lena fell in love with Hana boyfriend and in order to get him she plan the downfall of Hana. Six years late.

The fire of the war is an unending cycle of death. Only a few survive being burnt in this fierce flame. Some call them honorable, or even heroes who saved many. However, There were exceptional characters who were called neither of the above. They were called...Monster. Craving war and losing themselves in it, they spent their lives in madness. Halber, now known as Nicokel, was such a person. To live for himself and fulfill the wishes of his dead comrades, he begins his journey in the new world. ..... Tags: Cunning Mc, cautious Mc, hardworking Mc, cold protagonist, antihero Mc, charismatic protagonist, dark, depiction of cruelty, ruthless Mc. ***** The front page image does not belong to me, if the owner wants to take it down, plz inform me in the comments.

Twenty years ago, Mira, a 17-year-old girl, died in what she thought was a fatal accident. But death was not the end, but the beginning of a nightmare. Reborn again and again 99 times, she finally awakens in the world of her first life- Earth. But like the other worlds she lived in, the same system has also reshaped Earth, binding humanity to a harsh new reality. A world where survival is determined by power and magical abilities, giving rise to humanity's new hope- the Hunters. Mira must confront the cycle of destruction once more. Will she finally find a way to break free from this curse, or will her life end just like the others, leaving Earth to ruin?

All changes started when Tao Ruan received a message. From then on, Tao Ruan would be dragged into a dream with real experience every night, and be manipulated by various fancy tricks: physiology lessons in the classroom… In front of the French window…simulating pregnancy belly play…. At first, Tao Ruan thought that Gu Zhizhou, the senior whom she had a crush on, would definitely not be a pervert who harassed and played with her. Until she was played badly in her dream, all kinds of evidence in reality gradually surfaced.

"If I was fated to repeat each life with you just to watch you perish, I would choose to put an end to this vicious cycle this time. Let me change your destiny for once and let me destroy the world which has been harming us, even if it meant perishing with the world forever.", Phoenix. What happens when Ivy's sleep disorders issues were a result of her repeated life with Phoenix in her paracosm whom she was protecting but wants to protect her this time round? What happens when in the real world, Phoenix was destined to meet her as Jason who protected her till the end even when they had to face death just to keep her alive? Will Ivy accept all that she had asked for with such a high stack of price to pay?

"he's dead" Noel lives in a world where every time he reaches a certain point in his life, he is reborn, his memories wiped away. With each cycle, he forgets everything, living as if it's his first time in the world. But before the loop erases everything, there is a single minute—just one minute—where Noel remembers everything. For that brief moment, the weight of all his past lives crashes down on him. He recalls the endless cycles. In this world, humanity knows only two forces of power: aura and mana, concepts that have shaped the world for millennia. The world is divided into four continents, each ruled by its own kingdom. Dungeons, filled with forgotten powers, lie scattered across the land, hiding the ancient secrets of the world. Yet, for Noel, none of these things matter. His only wishes he could rest like he never existed in the first place but will fate accept his wish and allow him to rest?. I could add more info but I know you won't read so if you wanna know more get down and read it^_^. 4chapters every week. I wrote so even 10 years old could understand. https://www.royalroad.com/profile/610171/fictions. this is my story and I will be posting on royal road so go check it out if you're interested. Arthur: Mr.maker

*This story will be temporarily paused for chapter revisions and enhancements.* In a universe where the Zodiacs rule, Avant Dekus, the youngest son of a Star Realm Lord, awakens the long-feared 13th Zodiac—Ophiuchus. A power that destroyed its past wielders, Ophiuchus is now Avant's burden to bear. Enrolled at the prestigious Celestial Academy, Avant faces trials, rivals, and the looming threat of the Abyss, a force that could consume the universe. As he uncovers dark conspiracies and battles to master his powers, one question haunts him: Why did every Ophiuchus wielder before him fail? Can he break the cycle, or will he, too, fall into oblivion?

Failure upon failure! Despite how hard he craved for peace and happiness, life hit him harder with pain and distress. Only those who hit rock bottom, can have the power to leap higher, possibly, or die. This is the story of a man who wants to destroy this cycle of suffering, the evil intentions of life, without any replacement or alternative.

In a world where time itself is both a cage and a cycle, there is a truth darker than any shadow cast by the moon. Some things are destined to repeat, no matter how desperately one struggles to break free. Some souls are born to live their lives in endless loops, chained by forces they cannot understand, no matter how much they fight. This is the story of Sora, a boy whose existence has been twisted by the hands of fate and whose every step has been marked by an unseen puppeteer. Orphaned and alone, he exists at the intersection of broken dreams and painful truths, caught in a web of manipulation and dark secrets. From the moment he lost his parents under mysterious circumstances, Sora has been thrust into a world that holds no mercy. The cycle that binds him, and the others who are trapped within it, is more than a mere repetition of events. It is a curse, a force beyond their control, that shapes their lives and their deaths. But Sora refuses to accept his fate. With a heart full of anger, grief, and determination, he seeks to uncover the truth—about his parents, the mysterious forces controlling his life, and the dark entity known only as the Puppeteer. Alongside him is Dena, a girl who has also been scarred by the cycle and by the choices of others. Together, they fight not only for survival but for a chance to change the path they are on. Yet, in this world where every choice feels like a trap and every moment is both fleeting and eternal, Sora must confront the question that haunts him: Is it truly possible to break free, or is he doomed to repeat his fate, no matter what? Fated is a tale of love and loss, of power and manipulation, and of the relentless pursuit of freedom. It is a story about what it means to truly be free—if such a thing is even possible in a world that seems intent on making sure we remain prisoners of our own histories. The path ahead is uncertain, the stakes higher than ever before, and the price of freedom—if it exists—could be more than any of them are willing to pay. Welcome to the world of Fated. Where fate is not a gift but a curse, and even those who fight the hardest may find that they are nothing more than pieces in a game they cannot escape.

Two being born at beginning of all 'The chaos' and the 'order' as they separated one of them fell into the cycle of reincarnation as he experienced many things only to be locked by his traitorous friend. But he shall arise again, remember his origin and take his place as the manifestation of the divinity itself as he crushes through myriad worlds, picks up numerous beauties and rule as the one every being fears yet worships at the same time. For he is ZANE The "DIVINE ONE" [The image above does not belong to me. If the creator wants the image to be removed please contact me] I am fairly new to this, So if I ever make a mistake please point it out and please give your remarks in the comments. It would really help

Liam never asked for this—an endless cycle of death and rebirth, forced to inhabit the bodies of minor tyrants destined to fall. Each new world plunges him deeper into horror: haunted manors, zombie apocalypse, cursed kingdoms, and more. Survival is a fleeting hope as the so-called "hero" always looms near, ready to deliver justice. But the hero is no savior. Beneath their righteous facade lies an unsettling obsession with Liam, one that grows darker with each reincarnation. Memories resurface, their bond twisting into something unrelenting and consuming. The hero will stop at nothing to claim Liam—no matter the cost. And Liam is changing too. Once desperate to escape, he begins to blur the line between victim and villain. Liam isn’t the villain here. But when you’re stuck in this sick game, sometimes the line between good and evil blurs, and Liam’s starting to wonder which side he’s even on anymore. He becomes a killer—not by nature, but by necessity. Each act chips away at his humanity, pulling him further into the darkness he never wanted. As Liam uncovers the secrets behind these twisted worlds, his strength grows, but so does the hero's. The bond between them deepens, a strange pull that neither can fully understand, and as the hero inches closer to godhood, Liam finds himself more drawn to him than he ever expected. What once was a hatred born from fear now feels... complicated. The hero’s obsession becomes a constant, the one thing that never changes, and Liam finds himself strangely tethered to it, no matter how much he resists. Will Liam break free from the cycle, or will he surrender to the darkness—and to the hero who’s willing to destroy everything, even himself, to make Liam his own? "A tale of obsession, survival, and moral decay, this dark BL transmigration story will leave you breathless. Perfect for fans of psychological horror, slow-burn tension, and morally complex characters."

The apocalypse has begun. Over a hundred billion Undead have risen to wipe out humanity. Humans gifted with the powers of Gods fight to survive against zombies and each other. Nathaniel Torres was the last survivor of this apocalypse and has learnt the terrifying truth - the apocalypse has repeated countless times in an unbreakable cycle. However this time things will be different. Nathaniel’s memories from the horrors of the previous apocalypse - allowing him to regress to the day it all began. Nathaniel desperately hopes to change the future and prevent humanity’s grim fate. To do this he seeks to unite the infamous Nine Demons - nine of the strongest humans who defy the will of the Gods. All art by TalesLessTold

If the world would end tomorrow how would you feel? 13 years ago NYX was a being capable of manipulating, life, death, time, and space. Was defeated by the Five Heavenly mages. The Heavenly Flame, The Heavenly Ocean, The Heavenly Blade, The Heavenly Wind, and Heavenly Light. Although defeated NYX swore that it would rise again. Portions of this being were spread throughout Casadora hoping to never fall into the wrong hands. After this world-ending event, The Four Great Families Le Fleur, Valentine, Starborn, and Fallenburg created a plan for its return. A young man Axelle Alekzander has been eyed as a candidate for one of these Heavenly Mages. Follow Axelle and his journey to end this cycle of death in NYX. Can he prevent this fantasy world's end?