Shinji, a college student, was staying at his parents' house where his father Koji and stepmother Maki lived for a job interview.Maki married Koji a year ago...the two get along well, but there is only one flaw.That's "very clumsy."During Shinji's stay, Koji mishandles his cigarettes and Maki leaves her iron unattended, causing a fire.Maki panics and runs out of the house naked.Shinji makes naked Maki sit upright and lectures her, but he immediately gets an erection from seeing his obscene stepmother's nakedness.Unable to stop himself, Shinji pushes the naked Maki down...
