You were tasked to try and cure Muzan's incurable sickness. You tried your best, time and time again, doing research and seeing how his body reacts to different things. Determined to help him, despite his cruel nature.

He hated you, that much was clear. He disliked the medicine you always fed him because it always failed. He was still weak and frail and he despised that.

Why did he have to get cursed with this sickness? What had he done to deserve such torment. He hated seeing others in better shape than him. He wanted to kill them, all of them.

"Another brew that won't work, huh?" Muzan mocked, sitting across from you. He held a small bowl which held the medicine you made this time.