His parents suggested he could work as a home tutor for a distant relative, Yuuna, but she, who has a lot of charm and can change a flat-chest lover into a big-breasts lover, continues to mischievously seduce him in between studies today! Will Yosuke, the tutor, be able to stand Yuuna’s erotic and seductive body…? The first time sex with Yuuna, whose body is naughty and feelings are pure, is depicted in an intense way…!