The couple's relationship was not going well, and niece・かなえ ended up staying at her aunt・優香's house for a while. In fact, 優香 had been harboring feelings for かなえ that transcended gender, seeing this as an opportunity to make her his own… Unaware of this, かなえ found herself drawn into the depths of illicit acts with 優香. As women, they could feel each other's pleasure and the bond of their hearts, experiencing a happiness that seemed eternal. But there was no way they could stay in their world of two forever...
