1990, a time before cell phones. Yusaku, an office worker, is living a peaceful and happy life with his girlfriend, Yukiko. One day, he receives an invitation to a class reunion from an old friend. Yusaku is reluctant, but the words "Minami's back in town" stir a memory deep within his heart. Yusaku and Minami once shared a secret that they couldn't tell anyone about. When the day of the reunion arrives, the lives of Yusaku, Yukiko, and Minami begin to change dramatically. (R18+ and R15+ versions will have different endings). (R15+ version premiered at the OP PICTURES+ Festival 2025).