A pure lesbian love story between two schoolgirls in competitive swimsuits. Rei, the ace of the swim team and a third-year senior, and Megumi, a first-year junior who admires her. From a chance encounter in their daily lives, their lips meet and they share a kiss. What began as mere admiration turns into true love. Their relationship gradually deepens, evolving through physical intimacy into forbidden emotions. Set within the swim club, this is a story of innocent love blossoming and leaving an indelible mark on both their hearts.