The anime revolves around a young boy who decided to provide shelter to a raccoon that was discovered by a hunter.

The opening theme song is called "Rock River e" (ロックリバーヘ, Rokku Ribâ e, lit.

[6] Even with backlash from animal advocates, the Japanese government decided to adopt the 0% tolerance policy where the goal is to kill as many raccoons as possible.

[2] In 2003, the Hokkaido government specifically implemented the 10-year plan to completely eradicate raccoons in Japan, but attempts proved to be mostly futile as there was not enough financial support.

[6] Rascal appeared in commercials, games and anime: A spin-off series, titled Araiguma Calcal-dan, was announced on December 12, 2024 and is set to premiere in April 2025.