Survival in Body (2020)
Original title: 人体のサバイバル!
Survival in Body is a 2020 Japanese-language animation movie directed by Mitsuru Nasukawa, with a running time of 46m. It stars Akira Ishida, Megumi Han and Satsumi Matsuda.
Shrunken down to nanoscale, a professor and a scrappy kid end up inside a human body, where they must rely on their wits and knowledge to survive!