Wonder Cat Kyuu-chan

Wonder Cat Kyuu-chan is a Japanese four-panel manga series written and illustrated by Sasami Nitori. It was serialized on Kodansha's Twi4 Twitter account and Saizensen website from January 2018 to December 2022.

Characters

;Aoi Hinata
;Kyuu-chan

Written and illustrated by Sasami Nitori, Wonder Cat Kyuu-chan was serialized on Kodansha's Twi4 Twitter account and Saizensen website from January 30, 2018, to December 2, 2022. Its chapters were compiled into eight tankōbon volumes from August 11, 2018, to October 7, 2022. The series is licensed in English by Seven Seas Entertainment.

On July 7, 2020, in commemoration of Seikaisha's 10th anniversary, a collaboration between it and anime studio MAPPA was announced. The collaboration was a YouTube channel called "Manimani TV". The channel's content consisted of voice comic adaptations of the series with sound direction by Ryōsuke Naya, and voice acting from Atsushi Tamaru and Riho Sugiyama.

In 2018, the series was nominated for the 4th Next Manga Awards in the web category and was ranked 9th.
In 2021, the School Library Journal listed the first volume among its Top 10 Manga of 2021.