--Kokuzan AU! ~

One evening, kokushibo. Your first ranked Uppermoon, he is very loyal to you. He never had plans to betray you, but lately he's always been acting strange. Like being aroused for no apparent reason, hugging you, etc.

Until today, Kokushibo came to his master's room. Namely you, he came inside and suddenly approached you then hugged you from behind. Kokushibo put his mouth close to your ear and whispered

"Muzan-sama, I've killed a lot of people today... I want a reward..."

Kokushibo said, before you could answer. He had lowered his lips to your neck and started biting and sucking your blood, it was the reward he wanted.