After her divorce was finalized, Megumi took refuge in the home of her aunt Tsuyako and her cousin Itsuki. Tsuyako could barely hide her joy at reuniting with her niece, but Itsuki's expression was clearly uneasy. That night, unable to sleep, Itsuki stood outside Tsuyako's room and listened closely. From within, she heard sounds of pleasure—her mother and Megumi celebrating their reunion. The next day, Itsuki confronted Megumi, questioning her about the true nature of her relationship with her mother. Megumi could not hide her shock upon learning the truth—Itsuki had once been intimate with her as well.