Misa falls head over heels for Reiko, her new neighbor, instantly recognizing her lesbian tendencies and gradually becoming aware of her own feelings. After several weeks, the two have grown close enough to bathe together, though Reiko sees Misa merely as a dependable younger sister. Misa's love deepens each day, and she finally gives in—forcefully kissing Reiko and guiding her to climax through passionate touch. But this act causes Reiko to pull away, leaving Misa desperate to see her again and driving her to take bold new steps to win her heart.