Manga creator Yuuki Kikuchi announced on their Twitter account on Friday that their 100-nichi go ni Shinu Wani (Wani Dies in 100 Days) manga is inspiring an anime film adaptation.
The manga ended on Friday, and Kikuchi announced the film and book on the same day.
The manga quickly went viral on Japanese Twitter, with each new chapter receiving thousands of likes.
The manga will also have a compiled book volume that will ship on April 8.