Akiko Okuda's Short Manga 'Rusuban' Coming to Theaters in August: Anime Film Adaptation

From the master of horror/thriller in the Japanese manga world, Akiko Okuda's short work 'Rusuban' is moving from the small screen to the big screen. According to a July 2, 2026 report from Anime News Network, the short anime film adaptation of the manga will meet audiences in Japanese theaters on August 1st.
The film's production is handled by Kenji Iwaisawa's studio ROCK'N ROLL MOUNTAIN, known for independent anime projects such as 'On-Gaku: Our Sound'. Iwaisawa is particularly known for his minimalist animation style and experimental storytelling. In this new project, he is expected to bring Okuda's gripping story to life with his unique visual language.
Akiko Okuda, as a mangaka, is known for her stories filled with psychological thriller and supernatural themes. 'Rusuban' (which translates to 'Home Guardian' or 'Being Left Alone') deals with the chilling events that happen to a child left alone in a house. The original manga, as part of a collection of Okuda's short works, attracted interest both in Japan and abroad.
Short animated films are an important medium of expression, especially for independent producers, and are increasingly preferred for manga adaptations. The cinema version of 'Rusuban' draws attention with its dialogue-free storytelling reminiscent of the silent film atmosphere. The studio has not yet announced the film's festival route, but it is expected to participate in international festivals after its screening.
This short film, eagerly awaited by fans, will also be the first collaboration between Iwaisawa and Okuda. Currently, no official trailer for the film has been released; however, promotional materials are expected before August. If this attempt proves successful, other short manga by Okuda may also be adapted into anime in a similar manner.




