The January 2020 issue of Kadokawa's Da Vinci magazine revealed on Friday that the anime film of Seiko Tanabe's short story Josee to Tora to Sakana-tachi (Josee, The Tiger and the Fish) short story is itself inspiring a manga adaptation. The manga will debut in the magazine's next issue on January 6. Nao Emoto, the artist of the O Maidens in Your Savage Season manga, and the original character designer for the film, is drawing the manga.
The story centers on the relationship between Tsuneo and Josee. Tsuneo is a university student, and Josee is a young girl who has rarely gone out of the house by herself due to her being unable to walk. The two meet when Tsuneo finds Josee's grandmother taking her out for a morning walk.
Tanabe published the original story in the 1985 short story collection of the same name. The story inspired a live-action film in 2003.
Source: Da Vinci January issue