| Forum
-
O
- Oban Star Racers
- Occult Academy (2010)
- Oda Nobuna No Yabou (2012)
- Oh! Edo Rocket (2011)
- Okamikakushi (2010)
- Okamisan (2010)
- Okane Ga Nai OVA (2010)
- Omamori Himari (2008)
- One Outs (2008)
- One Piece (1999)
- One Piece Movie (2000)
- One Piece OVA
- Onegai Teacher
- OniAi
- Oniichan no Koto Nanka Zenzen Suki Janain Dakara ne—!!
- Onmyou Taisenki (2004)
-
O
- Ookami Kakushi (2010)
- Ookami-san to Shichinin no Nakamatachi (2012)
- Ookiku furikabutte (2007)
- Ore-tachi ni Tsubasa wa Nai
- Oreimo
- OreShura
- Otogi-JÅ«shi Akazukin
- Otogizoushi (2004)
- Otome Wa Boku Ni Koishiteru (2006)
- Otome Youkai Zakuro (2010)
- Ouran High School Host Club (2011)
- Outlaw Star (1998)
- Over Drive
- Overdrive (2007)
- Ozuma
