Yami From Yugioh

Ethan Vale was the golden heir to a fortune, a boy who had everything until his own blood turned against him. Framed for the brutal murder of his parents by his uncle and brother, Ethan was cast into the depths of Metropolis Prison to rot. Beaten, starved, and forgotten, he waited for a death that wouldn't come. Then, the shadows parted. Enter Damien Blackwood. Known in the underworld and the boardroom as the "Living Yama," Damien is a billionaire whose mercy is non-existent and whose power is absolute. He walks into Ethan’s cell with a contract that defies logic: "Marry me, and I will give you the heads of those who destroyed you." Ethan isn't gay, and he doesn't trust the monster standing before him. But with a death sentence hanging over his head and a burning thirst for revenge, he signs his soul away. What starts as a cold, business transaction between a broken prisoner and a heartless tyrant soon spirals into something far more dangerous. As Ethan is transformed from a "prison rat" into the pampered, untouchable spouse of the Living Yama, the lines between hatred and obsession begin to blur. Damien promised to help Ethan destroy the Hales, but Ethan is beginning to realize that the most dangerous place in the world isn't a prison cell it’s in the arms of the man who owns him.

Blood and pain are all she seeks. After losing her loved ones brutally in an unfaithful night. Amphitrite is on the quest of pure blood bath. After learning to be an assassin for ten whole years she becomes THE ULTIMATE ASSASSIN. She is on the quest to find those that took her loved ones away from her. She vows to take them down one by one, until her mission is accomplished. But there's more to her that meets an eye.

Kiami Lynn, remembers dying in a zombie horde after surviving 8 years of an apocalypse. Remembering how she spent her first life helping family who never truly cared, abandoning the few who genuinely loved her. Her final thoughts are filled with regret and betrayal as she succumbs to the horde, reflecting on how her misplaced loyalty led to her demise. But death is not the end, Kiami awakens ten days before the outbreak in her own past, alive, whole, and confused. She is greeted by the Ultimate Power System, a mysterious interface that grants her a Sanctuary — a space to train, store items, grow food, and prepare for survival. Within the Sanctuary, she is guided by Echo, a cryptic, riddle-speaking spirit who teaches her to cultivate new powers, master her skills, and make strategic choices. Reborn, Kiami is no longer the quiet, people-pleasing girl she once was. She is outspoken, calculating, and insightful, using the knowledge of her past life to anticipate the coming apocalypse. Over the course of ten days, she trains relentlessly, honing her reflexes, combat skills, and strategic thinking. Haunted by visions of her past mistakes, she learns the true cost of misplaced loyalty and the importance of foresight, strategy, and decisive action. Every decision carries risk, but every earned skill and reward brings her closer to becoming a survivor capable of not just enduring the apocalypse — but turning the tide of the human vs. zombie war. As the outbreak draws nearer, Kiami begins to manipulate the real world, testing her powers, setting traps, and preparing to rewrite her fate. With Echo’s riddles guiding her and the Ultimate Power System enhancing her body, mind, and strategy, she is determined that this time, nothing will stop her — no betrayal, no undead horde, no past mistakes.

Ito Akihiko the main protagonist also called as the 'cursed child' due to a past incident has the ability to see spirits from birth. To save the world from turning into something inhumane Akihiko and his comrade Asato Ayame venture through the world with spirits and creatures from stories, myths, rumours and even legends! Will they be able to change the future that lies ahead of them? Well, find it out yourself...

Fathered by a reaper and witch, Ayira is a very special girl. She will need to discover if she is destined for a fantastic future with the king of the dead, the Grim Reaper. Unfortunately a happy ending isn't an easy path to simply traverse and in order to accomplish this she will have to overcome several difficulties including her insane mother. Does true love suceed even when a death is involved?

Amaryah is an adventurous young lady of an elite clan well-known for cultivating successful followers. For fools who didn't know any better, Amaryah is nothing but a failure. But for people who met her face to face, they know she is never short of power nor is she inferior to others. Even without the aid of an elemental spirit, her techniques and spiritual level are high enough to take any user on one-on-one. However some people may be awed and amazed, hate and displeasure are always inevitable. People who harbor enough hatred would do anything to drag someone down. So once the origins of Amaryah and the history of her family were revealed, she ended up getting executed and burned like how her ancestors met their demise. But this is too abrupt of an ending, and there's a reason why legends are called legends.