is a 1997 Japanese 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, gruesome murders begin to occur, and she starts to lose her grip on reality.


Mima Kirigoe, member of a J-pop idol group named "CHAM!", decides to leave the group to become a full-time actress. She gets stalked by an obsessive fan named Me-Mania, who is upset by her change from a clean-cut image. Following directions from a fan letter, Mima discovers a website called "Mima's Room" containing public diary entries written from her perspective, and 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.