Unable to forget her first love, Yuki prioritizes work over romance, and now finds herself in her late 20s. Anxious with everyone around her getting married, Yuki starts to feel that she wants to fall in love as well. On her way home from work, she runs into Sho, a younger student from her college days, who asks if he can stay over for the night. Though she thinks about refusing him, she couldn't leave Sho out in the rain soaking wet like an abandoned dog... and decides to have him over. Though motherly instinct convinced Yuki to have Sho over, he gets carried away and ends up having physical relations with her.... Shortly after, Yuki's first childhood sweetheart would ask her out, shaking up the the feelings that just began to grow between her and Sho...?!