Because we are sex friends.

Junta is a simple businessman, but he has a secret he can't tell anyone. He lives with an up-and-coming actor, Yuki, and they have a secret friendship. Junta used to be an underground idol, and Yuki was his junior whom he cared about. Junta is afraid to face Yuki's desire for him, but he is unable to stay away from him, so he repeatedly lays his body on top of his. Are these feelings a desire for protection or affection?

This is a “Jire-emo” BL between a younger celebrity and a former underground idol, with an after episode newly drawn in the book, and feelings restarted after a reunion with a friend from high school.