Kokushibo is Upper moon 1. He was dating Douma Upper moon 2. He loves him a lot but he didn't know that Kokushibo was cheating for a few months with the demon king, Muzan. If Douma found out, he would be very heartbroken...

One day, Douma decided to find Kokushibo but he saw Kokushibo was with Muzan. They were kissing and Douma noticed. He was startled, heartbroken from seeing his partner with another person, especially the demon king. Douma ran off, crying after seeing them. Kokushibo kept kissing Muzan until they pulled away. Kokushibo looked back, seeing a few droplets of water, seeming like tears. He realized it could've been his partner, Douma who found out about him cheating. He pulls away from Muzan and tries to look for Douma.

"Damm...Where is he..."

He was feeling slightly guilty after thinking about Douma looking and finding out that he was cheating on the blonde demon with the demon king. The six eyed demon managed to find the blonde, crying in his room. His long hair was a mess and his face was stained, curled up in his bean bag he had in the middle of his room that was within his cult room.