After losing his job and getting kicked out of his home, young Yuta finds himself staying at his brother's place while he looks for new work. However, life at his brother's house isn't easy either; he feels like an outcast and constantly gets berated by his older sibling about still being a virgin at thirty years old. Determined to regain some confidence, Yuta asks his sister-in-law Kana if she could take away his virginity. Feeling sorry for him, Kana agrees but warns that it should be just a little bit. As soon as they become intimate, both are overwhelmed by an intense pleasure that leaves them breathless...

会社をクビになり家も追い出された青年・祐太は、転職先が見つかるまで兄夫婦の家に居候させてもらう事になった。しかし、兄夫婦の家にも自分の居場所はなく「30歳になっても童貞だなんて情けない男だな。」と兄から罵声を浴びる毎日。自信をつけたい祐太は、兄嫁・かなに童貞を奪ってくれと一生の願いを申し出た。祐太に同情するかなは、少しだけならと身体を許すのだが『挿入した瞬間』痺れるような快感に襲われて…。