Chiikawa (Japanese: ちいかわ, Hepburn: chīkawa), also known as Nanka Chiisakute Kawaii Yatsu (なんか小さくてかわいいやつ; Lit: ‘Something Small and Cute'), is a Japanese web manga series written and illustrated by Nagano. It follows the daily adventures of the titular protagonist, along with a series of animal-inspired characters. It has been serialized online via X (formerly Twitter) since January 2020, and has been collected in eight tankōbon volumes by Kodansha, as of November 2025. By November 2024, Chiikawa had sold over 3.6 million copies, including digital versions in circulation.[1] An anime television series adaptation was produced by Doga Kobo and premiered in April 2022. The first season aired in Japan from April 2022 to March 2025, with the second season premiering in July of that year.[2][3] An anime film adaptation of the Siren Arc produced by CyPic, titled Chiikawa the Movie: The Secret of Mermaid Island, is set to release in July 2026.