Ch. 1-2: Kuroya Rui is a talented porn star who does not care how many partners he has on a daily basis or how many he has in bed at the same time. One night, after his filming, he meets Eak who claims to be a incubus wanting to seduce Rui. What will happen when Rui decides to play Eak?s game?
Ch. 3: A college guy has a trauma after his first boyfriend dumped him because he didn't want to have sex so to change himself he became a AV actor with his college professor. The professor wants to date him seriously after a year of them filming AV's together.
Ch. 4: A guy sells himself to save up money to escape from his dad however a student from a rich school saves him from a client thinking he was being assaulted. They spend the night together for the student has to leave for the U.S. in the morning and buys him for a night.
Ch. 5: A guy joined an all boy group however he likes the leader, but he is a fan of his and gave him a ring but he doesn't wear the ring. When the idol confessed to him he won't believe him because he has never seen him wear the ring.
Ch. 6: A soccer team captain has to deal with a super rich kid who is a first year. The first year treats the other students like he is above them, but towards him he shows respect. While on a trip they go to a hotel by themselves.
Ch. 6.5: An extra of first and second couple.
Koakuma wa Ore no Iinari