Choukyoushi

Sawa has been in a relationship with Manabu for nearly a year. He is described as kind, gentle, and generous, and she sees no reason to complain, considering him a model boyfriend. She assumes their relationship will naturally progress toward marriage. One evening, Manabu takes her to a bar and introduces her to a friend who happens to be someone she knew in college. On her way home in a taxi, Sawa realizes she has taken the former classmate’s phone by mistake. The man requests to retrieve it from her apartment, and he arrives as arranged.