River's Edge

Haruna Wakagusa lives with her mother and attends high school. One day, a girl witnesses a classmate named Ichiro Yamada being bullied and stands up for him. A close relationship is established between Haruna and Ichiro: the guy reveals that he is a hidden gay and shows his secret treasure - a corpse on the river bank. At this very time, Haruna's boyfriend is cheating on her with her school friend.