Cells at Work! The Return of the Strongest Enemy. A Huge Uproar Inside the Body's "Bowels"! ("Hataraku Saibō!!" Saikyō no Teki, Futatabi. Karada no Naka wa "Chō" Ōsawagi!) is an animated theatrical movie based on a story from Volume 5 of the original manga series. It was released on September 5, 2020 in Japan.
- Hirofumi Ogura - Director
- Yuuko Kakihara - Writer
- Kenichiro Suehiro & MAYUKO - Composers