O
Oira Sukeban
Does being the only guy in an all girl school sound like paradise? It might be, if the girls knew you were a guy, but to stay in school teenage pervert Banji can't let can't let anyone find out his chromosomes don't match. Banji's status conscious parents want him to go to a good school, but not enough to spend the money on a good co-ed school. Now, in addition to studying math and science, Banji has to learn how to put on a bra and makeup. His life has become a living hell. Not only is he at the bottom of the social pecking order, he must also got to conceal his inner-masculinity from the pretty classmate girl who's stolen his heart while avoiding the female bullies who threaten to expose his less-than-feminine charms in the locker room.
(Source: ANN)
Ova
Winter 1992
5.21
Okama Hakusho
Okama is a man who has some problems. First off, his name means 'gay' in Japanese. Next, he has the hots for himself dressed as a girl. Finally, he ends up working at a transvestite bar where he has befriended a girl named Miki. This is not an easy matter to solve, because she only knows him as his female counterpart named Catherine. So how is a guy dressed as a girl supposed to come out to a girl as a heterosexual male? To make matters worse, she has a boyfriend who is trying everything in the book to get with her. Enter the exciting world of Okama Hakusho where love comes in many different flavors!
Ova
Winter 1991
5.86
Ojamajo Doremi Na-i-sho
Na-i-sho is a 13 episode OAV series detailing the summer between the ~motto~ and the Dokkaan season. It is a bit more mature than the TV seasons, and looks to develop each of the five witches romantically. Hana is back to a baby, and the mahou shop is a bakery.
(Source: ANN)
Ova
Winter 2004
7.82
Oedo wa Nemurenai!
We are now in the early 18th century, the Kyouhou era, when the merchant culture was flourishing. In Yoshiwara, the red light district of Edo, there is a popular courtesan with good looks and character, called Usugumo. She in fact is a daughter of a Christianized prostitute and Tokugawa Yoshimune (who was a real historical character and the 8th Shogun of Japan), but the power struggle in these times doesn't allow her to be with her father. Her fate is about to change when she meets the blond haired thief, Kikunosuke. With Kikunosuke, a doctor named Aoto Touichirou, who uses the yet unfamiliar Western medicine, and her pet cat, Kotetsu, Usugumo forms a thief group, the Kikugumi. In the meanwhile, a member of a mysterious group appears, aiming for Usugumo...
(Source: AniDB)
Ova
Winter 1993
5.43
Osu!! Karate-bu
Ova
Winter 1990
Otokogi
Ova
Winter 1990
Otaku no Video
Ova
Winter 1991
Oval x Over
Movie
Winter 2005
Onikirimaru
Ova
Winter 1994
One Punch Man Specials
Special
Winter 2015
Osomatsu-san Special
Special
Winter 2016
Ookami to Koushinryou II: Holo no Short Anime
Special
Winter 2009
Otona Joshi no Anime Time
TV
Winter 2011
One Punch Man 2nd Season Commemorative Special
TV
Winter 2019
One Piece: Innen no Log! Mugiwara no Ichimi to Cipher Pol
TV
Winter 2024
One Piece: Dai Gekisen Tokushuu! Hangeki Doumei vs. Big Mom
TV
Winter 2023
One Piece: Dai Tettei Kaibou! Kouzuki Oden Densetsu!
TV
Winter 2022
Omoi no Kakera
TV
Winter 2016
One Piece: Dai Tettei Kaibou! Gekitou! 5-nin no Shin Sedai
TV
Winter 2022
One Piece: Yuruganu Seigi! Kaigun no Hokoritakaki Log!
TV
Winter 2024
One Punch Man 2nd Season Specials
Special
Winter 2019
Ore no Imouto ga Konnani Kawaii Wake ga Nai.: SD Chara ni Yoru Short Movie
Special
Winter 2013
Otome Youkai Zakuro Picture Drama
Special
Winter 2010
One Piece: Araburu Henkaku no Log: Anyaku Suru Kakumeigun!
TV
Winter 2024
One Piece Film: Gold Episode 0 - 711 ver.
Ona
Winter 2016
One Piece: Barto no Himitsu no Heya!
TV
Winter 2021
Osomatsu-san: Ouma de Kobanashi
TV
Winter 2016
One Piece: Densetsu no Log! Akagami no Shanks!
TV
Winter 2022
Otogi Story Tenshi no Shippo
TV
Fall 2001