Young novelist Haruhiko, along with his girlfriend Ririko, are having lunch with his cousin Yoko as she talks about an important night from three years ago. We cut to: Jiro visits a bar run by Akira and Yoko and reunites after a long absence. Akira and Jiro are best friends since college. Yoko and Akira are now married, but Yoko had a relationship with Jiro in her past. The three friends are excited to be reunited, but at the same time, there is a sense of tension. Yoko and Jiro disappeared whi...