A man named Yuichi was living alone with his daughter Yui while working in another city. One day, Yui brought home an old friend she had met by chance, Ryohei. As they reunited, Yui couldn't help but feel excited about their reunion. However, she suddenly realized that Ryohei seemed too distracted by her bare chest. She then asked herself if he could really satisfy her daughter, Yui...! Thus began the sultry teasing of Yuichi's exposed breasts, tempting young men like crazy.

夫は地方に単身赴任中、愛は年頃の娘・ユイと2人で仲良く暮らしていた。そんなある日、ユイが偶然出会ったおさななじみの亮太を家に連れてくる。すっかり大人になった亮太との再会に胸を弾ませながら喜ぶ愛だったが、愛はその時気づいてしまう。自分の〈ノーブラ〉姿に亮太が興奮をおさえられずにいることを…！「亮太くんはユイをちゃんと気持ちよくしてあげられる…？」若い男を狂わせる愛のノーブラ爆乳誘惑がはじまって…。