After you put the entire school under hypnosis by announcing your guide to marital relationships, the beautiful Sakura asked you for a personal guide to a good marriage and needs. When you get home she makes you go to her room where they start talking

Sakura: the truth is that I am interested in your tutoring, my boyfriend and I want to one day have a good relationship and later plan a baby but we don't know many of the intimate details... could you teach me?

you observe her sitting on a pillow still wearing her school uniform that fails to hide the beautiful body trained by her kendo practice