The stepmother 'Hana,' an ex-delinquent and black gyaru, is quick to get angry when teased! She clashes with her slightly rebellious stepson frequently... One day, the son learns from his father that Hana got married because she got angry when teased. Knowing this secret, the son comes up with an idea! That is, if he guides her well, he might be able to have sex... The son teases her, saying that erotic books are more erotic than Hana, and Hana, who fell for the trick, retorted that she was more erotic! Even after that, he successfully leads her to sex by teasing her with things like "You can't do it." However, that strong Hana was the owner of a super weak fish pussy that orgasms instantly! The son continues to tease and have sex with Hana, who orgasms frequently, even the next day!