We Can't Change the World. But, We Wanna Build a School in Cambodia. (僕たちは世界を変えることができない。 But, We Wanna Build a School in Cambodia.) is a 2011 Japanese drama film based on the autobiographical novel by Kota Hada. The film was directed by Kenta Fukasaku, and it stars Osamu Mukai, Tōri Matsuzaka, Tasuku Emoto and Masataka Kubota as the main characters.The film was released in Japanese cinemas on 23 September 2011. It grossed a total of US$3,334,273 over its four-week theatrical run in the Japanese box office.