At first sight of Reiko, who moved in next door, Misa realizes her lesbian potential and her feelings for her. A few weeks later, the two have become close enough to take baths together, but that's because Reiko thinks of Misa as a "reliable younger sister." Misa's affections for her grow stronger day by day, and she forces herself on Reiko, kissing her and caressing her until she climaxes. However, Reiko has been avoiding her ever since... Wanting to see Reiko again, Misa puts her plan into action.