The manga inspired a spinoff manga titled Oboreru Knife: Yūgyo no Shizuku Iwa no Yume in 2012.
Japanese film news website Hollywood Channel began streaming a “prologue” video for the the live-action film of George Asakura’s Oboreru Knife manga on Wednesday.
The clip shows some footage from the film, including the title card, Kōichirō and Natsume swimming on the coast, and a narration by Natsume describing herself.
The manga tells the story of Natsume, a sixth-grade girl who has to move from Tokyo to a decidedly different town in the countryside.