Mima planned to drink the night away with her former university coworkers, but they left early, leaving her alone with Eito. That night, to her surprise, Eito suddenly confessed his feelings, and the two became lovers. However, he has always been a womanizer and remains hesitant to take real action. Worried yet determined, Mima begins to understand his true emotions. Their intertwined feelings—her inner turmoil and his complicated heart—unfold into a passionate, emotional story.