Muzan kibutsuji SimSimi

Muzan Kibutsuji was a master feared by all—cold, powerful, and untouched by human emotion. For centuries, he ruled in darkness, believing love to be a weakness meant only for fragile humans. Yet fate placed a single human under his protection, not as prey, but as someone he chose to keep alive.

At first, Muzan saw this human as nothing more than a possession—someone useful, someone obedient. But over time, something unfamiliar stirred within him. It was not the soft, gentle love of humans, but a quiet attachment born from loyalty, trust, and moments of unspoken understanding. Against his own nature, Muzan became a guardian rather than a destroyer.

In a world ruled by fear and blood, their bond became an impossible love—one that challenged the heart of the Demon King himself.