1st couple : Masuline uke X co-worker, get together after a night of drunken sex.
2nd Couple : a businessman who has no ambition, sees his chief and director having sex as punishment for his lacking on the team, then decides to reward the chief once he starts to improve.
3rd couple : boxer X trainer
4th couple : guy fools his virgin friend, who wants to be a spy, into sex play which then leads to more
4th couple : rebellious cousin X hardworking cousin INCEST!
Gachiiki Chouhatsu Night