Back in high school, Satsuki Nozomi managed the baseball club and secretly adored its captain, Kasajima. She finally mustered the courage to confess her love, but her feelings went unanswered. Seven years later, Satsuki is married and has built a happy home—until a chance encounter brings Kasajima back into her life. As if they had returned to their school days, the two naturally grow closer again. Their old, innocent feelings refuse to fade, and despite the guilt, they finally cross the forbidden line.