Cassian Acotar Fanfiction

Selene Nightbloom was fated to be the mate of Alpha Kieran Blackthorne, until he ruthlessly rejected her before the entire pack and chose another. Broken and cast aside, Selene was betrayed once more when Kieran, under the influence of his chosen mate, ended her life. But fate had other plans. Reborn with the memories of her past, Selene discovers a dark truth; she, Kieran, and the rogue Alpha Cassian Draven have been trapped in a cursed cycle of love, betrayal, and death across lifetimes. In one life, she chose Kieran and was forsaken. In another, she chose Cassian and was destroyed. Now, armed with forbidden power and the knowledge of her past, Selene refuses to be a pawn of destiny. As both Alphas, one her past tormentor, the other her forbidden protector, fight for her love, Selene must break the curse before history repeats itself. But the Moon Goddess does not forgive so easily. And fate always demands a price.

Two alpha males. One forbidden siren. A bond that breaks every rule. Althea Lake has always known she was dangerous. As a siren, her beauty and voice were crafted by nature to lure powerful mates—and in a world ruled by dominance and legacy, sirens are both coveted and feared. Desired by kings, claimed by titans, and whispered about in secret, they are walking temptation. But Althea isn’t hunting for power. She’s hiding from it. That is, until fate brings her face-to-face with the two most dangerous—and unclaimed—males in the supernatural world. Cassian Morningstar, the Demon King of the underworld and a cold-blooded CEO by day, built his empire with ruthless control. Xanden Moon, a deadly fae warrior and Cassian’s co-ruler, is known for his loyalty, precision, and barely leashed violence. Neither has ever found their fated mate. Until her. Althea is theirs. The bond is undeniable. But a siren having two mates? Unheard of. Forbidden. And potentially catastrophic for the balance of power in their world. Torn between her fear of being claimed and the impossible heat pulling them together, Althea must decide whether to resist her nature—or surrender to a destiny that could consume them all. In a world of magic, power, and primal instincts… some rules were made to be broken.

Eden Blake never believed in fairy tales—especially not the kind that begin with a billionaire’s offer and end in a penthouse suite. But when a desperate night leads to a fake engagement with cold, ruthless CEO Cassian Wolfe, Eden signs on for one month of pretending, pretending she’s in love... and pretending she isn’t falling for him. The rules were simple. No touching. No real feelings. No strings attached. But in Cassian’s world of press scandals, public enemies, and hidden trauma, the line between fake and real quickly blurs. And when secrets come to light—and hearts get involved—Eden realizes the most dangerous thing about the deal… is that it might be real after all. In this steamy, emotional billionaire romance, hearts are currency, secrets are leverage, and love might be the most expensive risk of all.

{UPDATES ON WEDNESDAYS, SATURDAYS AND SUNDAYS} The Storm and The Calm Thea Lysander doesn’t lose — not in court, not in life, and definitely not to love. But years ago, she made one reckless exception: him. Cassian Draven — all fire, fury, swagger, and scars. For three unforgettable months, they burned with a passion that consumed everything. Then, without warning, he vanished, leaving her shattered and alone, replaced by someone softer, safer, and far too perfect for him. Now, Thea is untouchable. A legend in the courtroom, a woman who’s buried her past and built a fortress around her heart. But when a case forces them back together, the past resurfaces in a single message; one Cassian never meant to send. He thought she was just a chapter in his wild, chaotic life. She thought she buried the ache he left behind. But some love stories don’t fade. They simmer, waiting for the right moment to ignite. And now, it’s time for round two.

Lena thought she escaped the nightmare of her car accident, but Cassian has other plans. He stalks her every move, appearing in the mirrors, his whispers consuming her mind. The lines between fear and desire blur as his touch ignites something dark and uncontrollable inside her. He’s not just haunting her—he’s claiming her. Every encounter draws her deeper into his twisted world, where pleasure and pain collide. The question isn’t if she can escape, but if she even wants to. As the boundaries of her body and soul erode, Lena finds herself unable to resist his overwhelming pull.

The dead don't lie. At Nocturne Prep, everyone else does. Where Alpha heirs and supernatural elites sharpen their claws before ruling the world, accidents don't happen. So when Luna heiress Seraphina Vale plunges to her death, no one dares question it. Not at this school. Rae Vale spent her life hidden as an Alpha's omega bastard daughter. Now she's dragged from obscurity to replace her dead half-sister. Wearing Seraphina's crest, sleeping in her bed, drowning in vicious whispers. She's a fraud with a target on her back. To Professor Cassian Rhys, she is the reincarnation of his first love and his second-chance mate. To Luca Ashborne, the untamed Alpha prince with cruel games and an iron will, she’s a threat. To Kieran Duskmoor, the elusive bloodborn who wears apathy like armor, she’s pure fascination. These boys rule the academy. They want to unravel her or bury her. But Rae isn't here to play nice. Not when Seraphina's death was murder. Someone wants to finish what they started when Rae starts to get too close to the truth, and Rae refuses to be next. At Nocturne Prep, loyalty is rare, power is everything, and love might be the deadliest weapon of all.

Eden Briar never imagined her needlework would entangle her in a war. An orphan with a gift for sewing, Eden finds purpose as an apprentice in the city’s finest tailor shop. When she’s invited to the palace to help prepare for King Cassian’s engagement to the cold and captivating Seraphine, she’s filled with awe—until a single mistake changes everything. Drawn into the palace’s web of secrets, Eden discovers her estranged brother Erec—missing since their parents’ mysterious deaths—is alive and working for Cade, the infamous rebel king. Cade is more than just a criminal. He’s Cassian’s brother—his equal in power, his opposite in rule—and their bitter rivalry has torn the kingdom apart. Cassian offers Eden a chance: infiltrate Cade’s world, earn Erec’s trust, and help end the rebellion once and for all. But nothing is as it seems. As Eden falls deeper into Cade’s shadowed world, the line between enemy and ally blurs. Torn between two brothers and two visions of the future, Eden must decide where her heart—and her loyalty—truly lie. In a kingdom stitched with betrayal, love could be her greatest undoing.

Eliana Rivera is the firstborn daughter of business tycoon Cassian Rivera. When her father's company falls into debt, he marries her off to the arrogant and ruthless billionaire, Alexander Grayson, as part of a business contract and under the threat of blackmail. Alexander, the billionaire CEO, never planned to marry, but the pressure of blackmail forces him into a union with a woman he barely knows. Although Eliana doesn’t see Alexander as her ideal partner, she agrees to the marriage out of a sense of duty. Once engaged, however, he barely acknowledges her presence and harbours disdain for her because of her father's actions and their relationship. But as they navigate their newfound relationship, the unexpected desire for each other's touch ignites—a twist neither of them planned, leading them toward an unforeseen love.

They told me to run. But the moment Cassian Thorne’s eyes locked on mine, the bond snapped into place—and there was no turning back. Cassian isn’t just any wolf. He’s the brutal, feared Alpha of Thornebrook. The monster who rules the night. And I’m just… human. I was never supposed to be in his world. Now I feel him everywhere: under my skin, in my blood, in every forbidden dream. The full moon is coming. The Alpha is done waiting. And he always takes what’s his.

Elena Marlowe never imagined one night could change everything. At a mask gala event, she let herself forget the rules of her life. One dance led to one kiss... and then a night she swore would never leave the shadows. She didn't even know his name... only the storm in his grey eyes and the way he made her feel like someone else for once, like someone free. But secrets have a way of catching up. Weeks later, two pink lines shatter her illusion of escape. With no way to find the man who disappeared with the dawn, Elena chooses silence. She walks away from the life she knew, determined to protect her baby and her heart. Until fate intervenes. Her new job is a lifeline, a chance to start over. But her new boss? Cassian Wolfe, The Billionaire CEO. Who is sharp, ruthless and unmistakably the man from that night. He doesn't recognize her or so she hopes. But Cassian Wolfe didn't build an empire by being blind. The moment Elena steps into his office, something shifts. A flicker of familiarity. A tension neither of them can name. Elena fights to keep her secret buried. Cassian fights to uncover it. But when the truth begins to unravel, lines blur in between past and present, between power and vulnerability, between fear and the one thing Elena vowed never to feel again: love. Now Cassian wants answers. He wants control. And maybe... just maybe, he wants her. But some secrets are too big to stay hidden. And some hearts are too fragile to risk shattering again. Will Elena protect the life she's built? Or will the father of her child claim more than just the truth?