is a 1997 Japanese adult-oriented animated psychological thriller film directed by Satoshi Kon. It is based on the novel by Yoshikazu Takeuchi, with a screenplay written by Sadayuki Murai. Featuring the voices of Junko Iwao, Rica Matsumoto, Shiho Niiyama, Masaaki Okura, Shinpachi Tsuji and Emiko Furukawa, the plot follows a member of a Japanese idol group who retires from music to pursue an acting career. As she becomes a victim of stalking by her obsessive fan, gruesome murders take place, and she begins losing her grip on reality.

Plot

Mima Kirigoe, member of a J-pop idol group named "CHAM!", decides to leave the group to become a full-time actress. Many of her fans get upset by her change from a clean-cut image, particularly an obsessive fan known as Mamoru Uchida or Me-Mania, who starts to stalk her. Following directions from a fan letter, Mima discovers a website called "Mima's Room" containing public diary entries written from her perspective, which has her daily life and thoughts recorded in great detail. During her acting career, she is joined by manager and former pop-idol Rumi Hidaka and her agent, Tadokoro. Mima confides in Rumi about "Mima's Room", but is advised to ignore it.