A corporate virgin, Manato uses a delicatessen for the first time in his life. However, the man who shows up is a blonde, flirtatious man who looks nothing like his photo! He resists, believing it to be a mistake, but is handcuffed and pushed down. Playing with the man's techniques, he is unable to resist his curiosity and pleasure. Later, he discovers that the man who took his virginity is his friend's twin brother, Mikito, who attended the same cram school when they were in junior high school...?