Kenji, a ronin student, decides to stay at his brother's wife's house, Ayumi, who is highly educated, so that he can watch his studies. However, Kenji, who has been studying all the time and has no tolerance for women, is on the verge of exploding his rationality just by having her beautiful face close to him. It's not a big deal, but it's not like studying for an entrance exam. Ayumi, worried about Kenji, proposes a brush stroke to eradicate worldly desires... The best virginity graduation experience where you can have a creampie lecture by your high-spec brother's wife who has everything: good looks, good academic background, and good personality!