(To think that Ichiro was still a virgin...) Fumi finds out by chance that his son Ichiro is a virgin.His daily frustration flares up, and he attacks with the intention of letting Ichiro graduate from virginity, but... Ichiro's penis is an unmatched cock that keeps erecting even if it's the first time he pulls it out!Ichiro chases after Fumi who runs away saying that it is impossible to do any more.What will be the fate of Fumi, who has awakened the lust monster?