| Number | Poster | Title | Total Episode | Status | Type | Detail |
|---|---|---|---|---|---|---|
| 6900 | |
One Room, Hiatari Futsuu, Tenshi-tsuki. | 12 | Upcoming | TV Series | |
| 6901 | |
One Stormy Night Movie | 1 | Completed | Movies | |
| 6902 | |
One Week Friends Kaori no Nikki | 12 | Completed | Summer 2014 Anime | |
| 6903 | |
Onee-chan ga Kita | 13 | Completed | Winter 2014 Anime | |
| 6904 | |
Onegai My Melody | 52 | Completed | TV Series | |
| 6905 | |
Onegai My Melody: Kuru Kuru Shuffle! | 52 | Ongoing | TV Series | |
| 6906 | |
Onegai Teacher | 13 | Completed | TV Series | |
| 6907 | |
Onegai Twins | 13 | Completed | TV Series | |
| 6908 | |
Onegai Twins (Dub) | 13 | Completed | TV Series | |
| 6909 | |
Onegai Twins EP OVA | 1 | Completed | TV Series | |
| 6910 | |
Ongaku | 1 | Completed | Movie | |
| 6911 | |
Ongaku Shoujo | 1 | Completed | Movies | |
| 6912 | |
Ongaku Shoujo (TV) | 12 | Completed | Summer 2018 Anime | |
| 6913 | |
Oni: Thunder God's Tale | 4 | Completed | TV Series | |
| 6914 | |
OniAi | 12 | Completed | TV Series | |
| 6915 | |
OniAi Specials | 6 | Completed | TV Series | |
| 6916 | |
Onigamiden | 1 | Completed | Movies | |
| 6917 | |
Onigiri | 13 | Completed | Spring 2016 Anime | |
| 6918 | |
Onigiri ni Naritai Cogimyun | 10 | Ongoing | Winter 2020 Anime | |
| 6919 | |
Onihei | 13 | Completed | Winter 2017 Anime | |
| 6920 | |
Onihei: Sono Otoko, Heizou Hasegawa | 1 | Completed | OVA | |
| 6921 | |
Onii-chan Dakedo Ai Sae Areba Kankeinai yo ne! Specials | 6 | Completed | Episodes | |
| 6922 | |
Onii-chan no Koto Nanka Zenzen Suki Janain Dakara ne!! | 13 | Completed | TV Series | |
| 6923 | |
Oniichan wa Oshimai! | 12 | Upcoming | TV Series | |
| 6924 | |
Oniichan wa Oshimai! (Uncensored) | 12 | Ongoing | Winter 2023 Anime |