Manabu's father remarried Momoe's mother, so the two became sisters. Life is boring, not handsome, not good at studying, not good at speaking, and even the person he has a crush on falls in love with someone else, causing Manabu to close himself off. Momoe is very worried about Manabu and wants to help him. Because he was a virgin, when he heard that, Manabu wanted to kiss her and do adult things with her. Momoe immediately refused. But she was so worried about him that at night, Momoe went into Manabu's room and covered her with the blanket because she allowed him to do whatever he wanted while under the blanket...
