Xiao You (known as Yuki in the Japanese version) comes back from Canada by herself on a quest for her love. She attempts to rekindle her relationship with Xi Men (known as Soujiro in the Japanese version) and at first seems to be unsuccessful. After an occurrence at the bar, Xi Men and Xiao You confront each other about their behaviors. Later Xi Men reveals to Xiao You a bit of his past and tells her about this girl, Xiao Geng, he once loved. Xiao Geng had discovered something very special, but he had been somewhat afraid of his feelings and had greatly disappointed her by not showing up. Inspired by the story, Xiao You goes on a time-consuming search for the "special thing" that Xiao Geng had wanted to show Xi Men.