During a trip around the city, Koyori and Tazuna get separated, and Tazuna goes around the whole city searching for her, fearing she will die. Koyori is confronted by the friendly Riri "Lily" Hojo, the student council president of Tazuna's school. She kindly takes Koyori with her to a card tournament, where she calls Tazuna but he does not pick up...