Bisexual Yuu Kawakami has never been able to forget a woman she once loved from afar. One day, she is shocked to discover that her new neighbor, Yuki Jin, bears an uncanny resemblance to that woman. Overwhelmed as their images merge in her mind, Yuu can no longer suppress her inner desires. Meanwhile, the apartment house wife, suffering from a sexless marriage, transforms her longing into lust and draws the straight woman into the lesbian world with intense fingering. How will this passion and seduction reshape their relationship?