Sonatine

The film centres on two young girls, Chantal (Pascale Bussières) and Louisette (Marcia Pilote), who become disillusioned with the world of adults and plan a suicide pact. Lanctôt structured the film as a triptych, with one segment devoted to each of the two girls as an individual, going through the experiences that cause them to lose faith in humanity, before they plan the suicide pact in the third segment. Lanctôt admitted that she had written the screenplay at a time when she was very depressed. (Wikipedia)