Over Sora, the most popular girl in the girls' school, the former classmates get naked and express the Kokoro they've been carrying since their school days! Sora's current girlfriend Mayu suddenly announces that they're dating at the alumni party. Rena and the others, who have always had feelings for Sora, rape Sora and publicly cuckold her right in front of her! They kiss, lick pussy, rub against each other...complex feelings that can only be conveyed by getting naked and interacting in a world of women only intertwine!