Rōnin Kenji decides to live with his brother's family so that he can receive tutoring from his high-achieving sister-in-law, Ayumi. However, Kenji, who has only ever studied and lacks resistance to women, is on the verge of losing control just by having a beautiful face close to him. He's in no state to study for exams. Concerned about Kenji, Ayumi proposes deflowering him to eliminate his distractions... Experience the ultimate virgin graduation with your sister-in-law who has it all: looks, education, and personality!
