Atsumu always feel like he's solving a puzzle. He's so near to finish it but the remaining puzzle seems can't fit to his puzzle. He often dreamt about that. Solving a puzzle. He's always questioning his self 'what's wrong?'. Every time that he's trying to fit the remaining puzzle piece to the others. But there's this mystery guy standing infront of him and his puzzle. He can't see his face because he's facing his back at him. Everytime he attempts to approach or talk to the guy, he's always waking up at the middle of the night. He always woke up stare at the ceiling thinking, 'who are you?'. He has a lot of questions that he can't answer. Until Osamu help him.
