| Number | Poster | Title | Total Episode | Status | Type | Detail |
|---|---|---|---|---|---|---|
| 6900 | |
Ongaku Shoujo (TV) | 12 | Completed | Summer 2018 Anime | |
| 6901 | |
Oni: Thunder God's Tale | 4 | Completed | TV Series | |
| 6902 | |
OniAi | 12 | Completed | TV Series | |
| 6903 | |
OniAi Specials | 6 | Completed | TV Series | |
| 6904 | |
Onigamiden | 1 | Completed | Movies | |
| 6905 | |
Onigiri | 13 | Completed | Spring 2016 Anime | |
| 6906 | |
Onigiri ni Naritai Cogimyun | 10 | Ongoing | Winter 2020 Anime | |
| 6907 | |
Onihei | 13 | Completed | Winter 2017 Anime | |
| 6908 | |
Onihei: Sono Otoko, Heizou Hasegawa | 1 | Completed | OVA | |
| 6909 | |
Onii-chan Dakedo Ai Sae Areba Kankeinai yo ne! Specials | 6 | Completed | Episodes | |
| 6910 | |
Onii-chan no Koto Nanka Zenzen Suki Janain Dakara ne!! | 13 | Completed | TV Series | |
| 6911 | |
Oniichan wa Oshimai! | 12 | Upcoming | TV Series | |
| 6912 | |
Oniichan wa Oshimai! (Uncensored) | 12 | Ongoing | Winter 2023 Anime | |
| 6913 | |
Oniisama e... | 39 | Completed | TV Series | |
| 6914 | |
Onikirimaru | 4 | Completed | OVA | |
| 6915 | |
Onimusha | 8 | Upcoming | ONA | |
| 6916 | |
Onipan! | 12 | Ongoing | Spring 2022 Anime | |
| 6917 | |
Only Yesterday | 1 | Completed | Movies | |
| 6918 | |
Onmyoji Rani | 7 | Ongoing | ONA | |
| 6919 | |
Onmyou Taisenki | 52 | Completed | TV Series | |
| 6920 | |
Onna Senshi Efe & Jira: Gude no Monshou | 1 | Completed | Movie | |
| 6921 | |
Onsen Yousei Hakone-chan | 13 | Completed | Fall 2015 Anime | |
| 6922 | |
Ontama! | 5 | Completed | ONA | |
| 6923 | |
Onyankopon | 12 | Completed | Fall 2017 Anime | |
| 6924 | |
Ooi! Tonbo | 13 | TV Series |