Yu Yi, codenamed Nightingale, is an undefeated legend in the infinite world.
Until he was betrayed by his beloved and fell in the corner of the dungeon on the verge of death.
When he opened his eyes, he saw a red-haired boy wearing a half-face clown mask squatting in front of him, with clear and crazy green eyes.
"I found you." The boy announced, his tone was as happy as if he had found a new toy, "From now on, you belong to me."
Yu Yi wanted to die quietly, but was inexplicably dragged back to the world by this naive lunatic.
——Later he found out that this lunatic was the rumored "Clown Nian" who even the BOSS avoided.
——But Nian didn't know that the "beautiful wounded person" he picked up and took home was the top boss who had just "died".
Intention: to salvage each other in the abyss and rebuild light on the ruins.