Like Grains of Sand (1995)

The movie is built around the very complex relationships between Yoshida, leaving Shimizu for Aihara (or at least he tries to), and his friend Ito, whose love for Yoshida seems to have little chance for success. In the end we have a coalition of Ito and Aihara - who may or may not be in love with Ito - teaching Yoshida a lesson.