Underworld Fanfiction Crossover

No one crosses Dante Kincade and walks away unscathed. I just did it with a microphone and a song that made the entire room gasp. Marisol Franco has spent years hiding under a fake name, trying to outrun her father's brutal empire. But one impulsive karaoke performance at a corporate event shattered her cover and made her the target of her powerful CEO, Dante Kincade. Cold, calculating, and rumored to have ties to the underworld, he doesn't forgive public humiliation. Dante wants revenge and her secrets. But as his obsession grows, so does the dangerous desire neither of them can control. With her fire and fearlessness, she’s nothing like the women who try to please him. She meets him head-on and defies him at every turn. But her past is darker than he imagined. Hunted by her father’s men and promised to a sadistic cartel heir, she’s running out of time. Trapped between three dangerous men and a past that won’t stay buried, Marisol must decide who to trust before everything goes up in flames. Now, the only man standing between her and a fate worse than death is the one who has every reason to destroy her. Dangerous Melodies is a dark, addictive romance brimming with secrets, betrayal, and enemies-to-lovers heat. Perfect for fans of forbidden desire, dangerous obsession, and love that refuses to surrender.

There’s a thin line between desperation and destiny ****** Sophia Jenkins has lived her life in the shadows of hardship. At 23, she juggles multiple jobs, trying to lift her family out of debt while caring for her terminally ill mother. Her only dream is to escape the weight of her broken home and rewrite her family’s fate. But fate had other plans. On her birthday, when relentless debt collectors humiliate her and her father, Sophia’s world shatters—until a mysterious man steps out of a sleek black car, commanding the chaos with nothing but his presence. Leonard Morano. At 40, Leonard is the ruthless head of the Morano mafia empire, a billionaire controlling over a hundred businesses and underground casinos. What no one knows is that he was once Martin Jenkins’ best friend—and the man who silently watched Sophia grow from afar before vanishing when she was fifteen. Now, he’s back. And he’s not offering help. He’s demanding marriage. With the chilling words, “Marry me, and I will smash every obstacle in your way,” Leo pulls her into a world of luxury, power, and deadly secrets. But can Sophia survive the dark underworld Leo rules? Can love truly bloom in the cracks of fear, obligation, and a past that refuses to stay buried?

Emily, a young adult trying to find her meaning to life, is put into a dilemma when she's killed in an attempt to save the one she loves . She's given another shot at life at the cost of her beloved friend, becoming the guardian of the gate between the Vampire and the human realm. In her plight to become human again, she must complete the last guardian's mission to close the gates of the underworld and lock all the wandering vampires back in. Will she be able to accomplish her mission when her heart begins to beat for the dethroned King of vampires who plans to stop her from sealing the gates of the realm?

Lilian Reed is a determined young woman, working at the exclusive Shadow of Sophia club to support her dreams of becoming a nurse and leaving behind the exploitation by her stepmother, Diane, and her stepbrother, Liam. But her life crumbles when Diane sells her for a fortune to the feared Cassian Moore, a mobster whose presence exudes power and danger. The first encounter between them is marked by a brutal rescue and a gaze that burns like fire, planting the seeds of an irresistible sexual tension. Trapped in a dark agreement, Lilian is dragged into Cassian’s underworld, where each touch of his, firm on her chin, warm against her skin, threatens to dissolve her defenses. Every whisper laden with promise pulls her into an abyss of desire. Between the fear of being consumed and an overwhelming attraction, she proposes to work to pay off her debt and earn her freedom, but Cassian has other plans. “Understand once and for all, Lilian Reed. You belong to me now. You will work for me and answer only to my orders,” he declares, sealing the agreement with a brutal kiss that leaves her body trembling and her mind ablaze. As memories of a painful past resurface and danger closes in, Lilian struggles to resist the mobster's dominance, but will her heart be surrendered to him before she escapes this hell?

“One life saved. One soul claimed.” “You belong to me now, little bird. You saved my life, and now I will spend mine claiming yours.” Cardiovascular nurse Ava Moreles thought saving a dying stranger was just another day at the hospital. She had no idea that pulling Dario Santos back from death’s door would seal her own fate. Dario Santos doesn’t just rule the underworld—he owns it. And now, he’s decided he owns her too. When he crashes her wedding with blood on his hands and possession in his eyes, Ava realizes the man she saved isn’t just dangerous—he’s obsessed. With her. Torn between the safe love she’s always known and the consuming fire of a man who would burn the world down for her, Ava must navigate a treacherous path where every choice could be her last. In Dario’s dark empire, love isn’t just dangerous—it’s deadly. But as the line between captive and willing participant begins to blur, Ava discovers the most terrifying truth of all: the monster she’s supposed to fear might be the only one who truly sees her soul. Will she surrender to the darkness that calls to her? Or will fighting for her freedom cost more than she’s willing to pay? Some obsessions are worth dying for. Others are worth killing for.

" Where do you think you are going?!" A chilly and domineering voice rang out across the room, enough to make the atmosphere heavy. Ava froze as she was about to twist the door knob. "Shit!" She cursed under her breath and slowly turned to face the monster coming for her. " Have you forgotten what I told you?!" Lorenzo yanked her towards him and lifted her chin, allowing her dazzling dreamy eyes that were full of fears to bore into him. " You are trapped, Ava," he whispered slowly, as he gave her a killer look made to destroy hearts. ~ Known as the richest man in the city and one of the people who could dominate the country, Lorenzo was unmatched. A mafia boss....he was, and he ruled the underworld smoothly. All the people in the underworld knew just how cruel and cold he was. A word from him was enough to crumble them into nothing! Just how domineering?! Ava, on the other hand, was a feisty and rash young lady who had a very good charm. She was an actress and known to have a clean background, but all that turned upside down one day. Now, her buried secret was revealed, and if exposed to the outside world, it could ruin her. Threatened with it, she was forcefully given a mission that was almost impossible to accomplish. But she knew that was her only choice.....even though there was a great reluctance in her heart. Lorenzo, who had a hidden Identity, was the main target. A mafia boss and an actress with hidden goals..... But a game only needs a winner and a loser. Will all his sweet tortures to her finally turn into something addicting? Can it capture them and entangle them into something lovely?

"Don't do it," he yelled. "Elara! Stop!" I wanted to, so I gave in to it... gladly letting the darkness take me with it. ****** She was wolfless, powerless, and marked as an outcast. He was born ruthless, powerful — an Alpha feared not just in the packs, but in the underworld where blood and power rule. When Elara discovers her fated mate is the man who destroyed her pack and crushed her world, her life begins to fall apart again. He should be her protector… but to him, she is nothing but a liability he cannot afford. But fate is merciless. They tried to fight it but their bond burns too fiercely to be ignored. Will Elara risk her heart and safety for the mate who ruined her life, or fight to reclaim her freedom before his darkness consumes her?

Adams Martin does everything humanly possible to avoid people after surviving COVID-19 and suffering from PTSD. Following his therapist’s instructions, he adopts a dog from the shelter to help him navigate being around people. The only problem is, that his dog occasionally shifts from dog to man and back.   Kehan Gammy (Alex) is the embodied soul of the first Inugami, created by the gods. When he was sent to the human world as punishment for letting a powerful, dark soul escape into the human world, he didn’t expect to have to be bound to a human and have to blend in as one, learning everything like a baby and adapting to his new-found body. But Adams was easy to bond with, giving him a human name, Alex, he’d appeared as a common dog. When his exit from the underworld set off strange events happen in New York. He has to devise a plan that doesn’t involve Adams Martin in Will he be able to protect everything he wants to preserve or will he return with yet another failure?

Aria Jones has always been a pawn—trapped under her ruthless father’s control and forced into an arranged marriage with a man she barely knows. But on the day of her wedding, everything shatters. A daring escape with the infamous Nikolai Petrov—dangerous, untouchable, and heir to a rival empire—thrusts her into a deadly underworld where love is a weakness and trust can get you killed. Now hunted by her vengeful fiancéand a jealous rival; and caught in a ruthless war between cartels, Aria must do more than just survive—she must transform. With enemies circling and a past that refuses to let go, she has two choices: return to the gilded cage she knows or embrace the dark power that Nikolai sees within her. But as their passion ignites, so does a war that could destroy them both. In a world where betrayal is inevitable, will Aria and Nikolai be each other’s salvation—or their downfall?

“I’m done with you, Aurora Fernandez—if that’s even your name.” Mia’s voice trembled with rage as she turned for the door. “You’ll regret refusing me,” Aurora snapped behind her. Mia's hand touched the knob—just as it turned on its own. The door creaked open. Her heart dropped. Standing in the doorway was a face she never wanted to see again. Lucius Lovato. The cold, merciless CEO of the department store where she'd once worked. His eyes swept over her with visible disdain. “Who is this little thing, Eva?” he asked, his voice hoarse and biting. And just like that, Mia knew—she was trapped again. Wrongfully accused. Publicly humiliated. Betrayed by the only man she ever loved. Mia Simpson thought she'd hit rock bottom. Then came the offer—escape prison and start over, under one terrifying condition: seduce and marry Lucius Lovato, the mafia heir with a heart of ice and a soul no one dares touch. But Mia isn’t the fragile girl the world thinks she is. She agrees to the deal—on her own terms. Behind her innocent eyes burns a thirst for revenge, and the deeper she steps into the dark world of power, blood, and secrets, the more dangerous she becomes. Lucius, however, is not a man easily fooled. Every attempt to break him only draws him closer. And every secret Mia hides? He already suspects. As enemies close in and her hidden past begins to unravel, Mia discovers a horrifying truth—she is not just a girl caught in the middle of a mafia war. She is the legacy of something much greater… and much more feared. He was her mission. She was his undoing. But in the underworld, love might just be the most dangerous weapon of all.