Ring of Curse

Kurohane gets good grades in school, but is not popular and has a hard life at home because her parents favor her little sister, Kana. After she is diagnosed with cancer - and her mother acts as though she doesn't even care - Kurohane curses Kana, who quickly dies. Soon classmates are being cursed one by one... This 2011 Japanese cult phenomenon is from Mari Asato. The film stars members of the hot Japanese pop unit Buono, who also provide the soundtrack.