Ryou Mizuhara is a normal high school student, living alone with his younger sister Akane. They were very happy together, at least until a mysterious girl crashes into their lives who introduces herself as Ryou's new fiancée.

• Daisuke Kishio
• Sakura Nogawa
• Yukari Tamura
• Miyu Matsuki
• Yuko Minaguchi
• Chiaki Takahashi