In this heartbreaking tale, our protagonist, Hina, finds herself caught between her stepmother's remarriage and her own desires. Despite initially supporting their union out of necessity, she learns that her father married solely for access to her youthful body – including teaching her about sexuality when their mother isn't around. As Hina struggles with these revelations, her expression shifts from despair towards resignation...

結夏は義父が苦手だ。生活の為に複雑な気持ちを抑え再婚を応援することを決めたのだが…しかし、義父が母親との再婚を決心したのは、連れ子の結夏の幼い身体が目的だったというのだ。そして、今日も母親の居ぬ間に結夏に性教育を施す義父、無口な結夏は絶望を呟き表情は諦めへと変わっていく…