"100M") is a Japanese manga series written and illustrated by Uoto.

It was serialized online via Kodansha's Magazine Pocket website and app from November 2018 to August 2019 and was collected in five tankōbon volumes.

An anime film adaptation produced by Rock 'n' Roll Mountain is scheduled to premiere in Japan in 2025.

Written and illustrated by Uoto, Hyakuemu was serialized on Kodansha's Magazine Pocket website and app from November 6, 2018, to August 6, 2019.

The film is animated by Rock 'n' Roll Mountain, produced by Pony Canyon, TBS and Asmik Ace, and directed by Kenji Iwaisawa, with character designs by Keisuke Kojima.