Yuu Mom, determined to turn her inexperienced, studious, and still-virgin son into a real man, decides to personally provide him with strict sex education. Using her own body, she takes a no-nonsense, hands-on approach to teach him the pleasures of women. Starting with kisses, the lessons quickly escalate, and her son grows stronger and more confident. As a result, Yuu Mom finds herself confronting a new, deeper relationship with her son.