Kanae, a niece whose marriage is not going well, ends up staying with her aunt Yuka for a while. Yuka has had a secret love for Kanae that goes beyond gender for a long time, and sees this as a chance to make her her own... Without realizing it, Kanae falls into the depths of immoral acts with Yuka. They feel eternal happiness from the joy that only two women can feel together, and Kokoro connection. But they can't stay in their own world forever...