Asuka Momose, who has just gotten her first boyfriend, turns to her best friend Ichika Matsumoto for advice, who already has boyfriend. The two decide to stay at a hotel for a girls' night out. What begins as innocent conversation quickly turns intimate when Ichika suggests practicing a kiss, leading to a sexual experience that defines their youth. Through kisses and caresses, they discover a mutual desire and indulge in each other until morning... A youthful lesbian experience for high school girls who experience girls before boys.