| Koala's Diary | |
 Firsttankōbon volume cover | |
| コアラ絵日記 (Koala E Nikki) | |
|---|---|
| Manga | |
| Written by | Yuami |
| Published by | Kadokawa Shoten |
| Original run | June 11, 2021 – present |
| Volumes | 4 |
| Original net animation | |
| Directed by | Takao Kato |
| Studio | Studio Mother |
| Released | October 2, 2025 – present |
| Runtime | 1 minute |
| Episodes | 9 |
Koala's Diary (コアラ絵日記,Koala E Nikki) is a Japanesemanga series written and illustrated by Yuami. Originally serialized as a web manga onTwitter since June 2021, it was later acquired byKadokawa Corporation, who then began publishing the series in print in March 2022. Fourtankōbon volumes have been released as of February 2025. Anoriginal net animation (ONA) adaptation produced byStudio Mother began releasing onYouTube in October 2025.
| No. | Japanese release date | Japanese ISBN |
|---|---|---|
| 1 | March 17, 2022[3] | 978-4-04-680919-3 |
| 2 | December 22, 2022[4] | 978-4-04-682116-4 |
| 3 | December 26, 2023[5] | 978-4-04-683176-7 |
| 4 | February 14, 2025[6] | 978-4-04-684477-4 |
Anoriginal net animation (ONA) adaptation was announced on June 11, 2025. The series is animated byStudio Mother and directed byTakao Kato, with Chiharu Hara designing the characters and Atsushi Umebori and Slavomir Stanislaw Kowalewski composing the music.[7][2] It began releasing onYouTube on October 2, 2025.[1] The anime's theme song "Niji to" (With a Rainbow) performed by Punipuni Denki featuring Kan Sano.[8]
| Television series | |
|---|---|
| Feature films | |
| ONAs |
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