Which Anime Series Feature Fetters As A Central Plot Device?

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.

Evy was a simple-minded girl. If there's work she's there. Evy is a known workaholic. She works day and night, dedicating each of her waking hours to her jobs and making sure that she reaches the deadline. On the day of her birthday, her body gave up and she died alone from exhaustion. Upon receiving the chance of a new life, she was reincarnated as the daughter of the Duke of Polvaros and acquired the prose of living a comfortable life ahead of her. Only she doesn't want that. She wants to work. Even if it's being a maid, a hired killer, or an adventurer. She will do it. The only thing wrong with Evy is that she has no concept of reincarnation or being isekaid. In her head, she was kidnapped to a faraway land… stranded in a place far away from Japan. So she has to learn things as she goes with as little knowledge as anyone else. Having no sense of ever knowing that she was living in fantasy nor knowing the destruction that lies ahead in the future. Evy will do her best to live the life she wanted and surprise a couple of people on the way. Unbeknownst to her, all her actions will make a ripple. Whether they be for the better or worse.... Evy has no clue.

A serial killer targeted me. My sister-in-law was assaulted and murdered while trying to save me. Not only did I refuse to call the police, I pushed my father-in-law and mother-in-law down a flight of stairs when they came to help. I even helped the killer destroy the evidence. When my husband learned that his entire family got killed, he broke down in tears. He grabbed me by the collar and demanded, "Why? Why would you do this?" I deliberately waved photographs of his family's gruesome deaths in front of him and burst into laughter. "Why?" I sneered. "Because they deserved it." My parents begged me to cooperate so I wouldn't be sentenced to death. Instead, I publicly severed all ties with them. Meanwhile, the murderer who escaped justice struck again, claiming another victim. As public outrage reached its peak, I was selected for the Memory Extraction Program. Before the sentence was carried out, my husband asked me one final time, "The Memory Extraction System is still a prototype. You could die during the procedure. "Tell us the truth now, and there's still a chance to make things right." I slowly raised my head to look at him. "You're not getting a single word out of me." The crowd instantly erupted. People shouted that a worthless life like mine deserved to die. But when my memories were finally extracted, they were the ones crying and begging someone to save me.

EMERSON: "I'll be the master who programs you to please me, I'll rewrite your codes to serve my soul... alone!" IELUS: "You stole from me, now you must pay the price. I'd bound you by obligation and shape your fate to suit my taste." LEROY: "You'll never own me. I'll resist you, Alien, with every ounce of hatred in me. And I'll never surrender." ~~~~~~~~ BLUE TALE (The Series) In this captivating 3-in-1 serial M × M novel, three entwined storylines explore the complexities of power, control, and surrender all amidst Love for the Unnatural, unrealistic. CODE OF DESIRE & OBSESSION: Infamous CEO of 'SupportYou', Emerson Emerson must test a cutting-edge sex bot designed for companionship and sex before purchasing or investing in it. But when he discovers it's not actually a robot but a human with artificial intelligence as its brain, he's drawn into a world of passion and obsession. WINDBOUND: A Spirit Host, Raven, born human has been tormented by malevolent spirits since he knew himself. He finds relief in an artifact taken from the mountains. Unbeknownst to him, the artifact belongs to a Wind Spirit, Ielus, who now demands retribution and binds Raven to a debt of obligation. ALIEN SKIES: When an alien invasion forces kid Leroy to become a captive, he finds himself at the mercy of his extraterrestrial captor, Xcott. But as Leroy resists Xcott's attempts to break him, he discovers a forbidden attraction that threatens to upend everything. ENJOY!!!

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...

Bound to Me A single mistake cost me my life. I thought death was the end. Instead, I woke up in another world as a child with a mysterious system bound to my soul. For years, it trained me for one mission. [Main Mission Unlocked] Bind with the Four Crown Kings. Destroy the Void Beast. Failure Penalty: Death. At nineteen, I receive an invitation to Noctis Academy, a prestigious school for supernatural elites. The moment I arrive, the four kings everyone fears become dangerously fixated on me. The cold king who refuses to kneel. The seductive king whose smiles hide danger. The silent king who watches from the shadows. The golden king whose warmth conceals terrifying obsession. Each bond awakens power sleeping deep within me. Each touch restores fragments of memories I was never meant to remember. Because I am not just a girl chosen by the system. I am the reborn soul of the Dark Queen. And the monster the world fears most—the ancient Void Beast—was never hunting me. It has been sealed inside me all along. As memories of my past slowly return, I uncover truths buried by time—truths about the queen I once was, the kings bound to me, and a sacrifice that changed everything. When the final seal breaks, I must make a choice: Save the world. Trust the four kings. Or surrender to the darkness. Because the greatest threat to this world… may be me.