Ch. 1: A guy goes to a mountain to do suicide, but meets a bear and a guy named Tarzan that is only wearing a onsen cloth around his waist. After Tarzan has been injured by the bear to save him. Tarzan teaches him how good sex feels so he won't do suicide.
Ch. 2: A guy is stopped by a hair stylist that asks him if he wants to be a hair model and he agrees because the guy is cute. However the hair stylist wants him to model not his head hair, but his pubic hair.
Ch. 3: A guy is kidnapped, naked, and tied up by a guy that is confessing to him. After telling him to trust him and untie him, he does and he stays. Apparently he opened a window for a beetle and the guy thought he opened the window for him because he was feeling sick and he fell in love with him.
Ch. 4: A guy is hiding in his neighbor's closet after breaking up with his boyfriend, however his neighbor is cold and expressionless. His boyfriend comes in when he is attacking the neighbor and does it to him in front of the neighbor as his punishment. The neighbor can't take it anymore and knocks the boyfriend out and does it with him.
Ch. 5: A guy is not allowed to wear pants at home and his boyfriend is a sadist that doesn't eat his food unless they "play" with it first. The guy gets tired of it so he locks a chastity belt on and gets his sadist to find the key. The sadist boyfriend remembers how he doesn't consider his boyfriend's feelings anymore and decides to change and be gentle.
Ch. 6: A guy is in a relationship with his perverted teacher, however after a student confesses to him, he realizes the teacher has never said how he feels about him. He tries to ask the teacher, but he keeps saying only erotic things. However the student that confessed and got turned down blasts on the intercom the sounds of them having sex. The teacher confesses his love to the student in front of everyone.
Ch. 7: A perverted teacher punishes his students for getting any answers wrong by in front of the class shoving a vibrator up their butt and having them recite the problem and answers a hundred times. The top student who has never been punished is challenged by the teacher to solve problems, he gets them all right except the last one because he cheated the decimal point with a fleck of skin and proceeds to tie him up and punish him.
Ch. 8: Extra of the first couple. Tarzan is having a wrestling match and the opponent rips his pants, so the guy throws him a onsen towel and after winning proceeds to "thank" him in the dressing room.
Onsen Tarzan