Watch All Night Long

In this Japanese crime drama, a mentally disturbed businessman kills a female high school student, an act witnessed by three other teenagers. A friendship develops among the trio due to what they saw. They decide that holding a party is the best way to forget the brutal murder they witnessed, but the party only leads to more violence when a local gang crashes the event. One of the teens sees his girlfriend being raped and the trio uses extreme measures to get rid of the invading thugs.