Monster is a 2023 Japanese coming-of-age psychological drama mystery thriller film directed, co-produced, and edited by Hirokazu Kore-eda from a screenplay written by Yuji Sakamoto. It stars Sakura Andō as a mother who confronts a teacher after noticing disturbing changes in her son's behavior. The film marks the first time Kore-eda has directed a film he did not write himself since Maborosi (1995). This was the last scoring project by Ryuichi Sakamoto, who died two months before its release; the film is dedicated to his memory.