Childhood Nanase Hazuki and Moa Hoshizora. When they were little, the two would always play together, hiding behind the curtains. Before they knew it, they had become lesbians and stayed together. Then, Kanae Ruka transfers to the school. From the moment she first laid eyes on Nanase Haruka, she is drawn to her and almost forcibly kisses her. Moa happens to see this. Jealousy and love. What will the three people in this delicate relationship come to?