After graduating from high school, Tachibana and Otani decided to move in together as more than friends. Although their feelings are very real, the secret nature of their relationship and the words that have gone unspoken between them leave room for doubt. When a chance encounter reintroduces the pair to Yuki, a former classmate, Otani becomes suspicious of Tachibana's close friendship with her. Will rumors from their high school days together spin Otani's insecurities out of control? Or could it be that Tachibana and Yuki really have rekindled an old flame?