Mama's Real Sex Education, Kanzaki Leona

His mother, Leona, is called to school by her son, Kiyoji, who has published a white paper for the health education exam. And Leona realizes that Seiji is still not interested in sex and has no knowledge. Later, Ichisei, Seiji's classmate who learned about this, suggested that Leona and herself practice sex in front of Seiji. Although he was embarrassed by Leona, when Seiji became bullied, he was threatened by Issei and decided to have a sex with Issei in front of his son.