| Opera-za de Mattete |
1990 |
1 |
- |
| Open Sesame |
2001 |
17+ |
- |
| Open 24 hours a day |
2009 |
1 |
- |
| Ootagawa Junjou Lovers |
2013 |
1 |
- |
| Ookiku Furikabutte |
2004 |
26+ |
- |
| Ookamidomo No Shitsukekata |
2011 |
1 |
- |
| Ookami Rise |
2018 |
5 |
- |
| Ookami Ni Kuchizuke |
2012 |
2 |
- |
| Ookami Heika No Hanayom |
2009 |
14+ |
- |
| Oogata Shinjin No Kyouikukei |
2015 |
1 |
- |
| Onzôshi No Otehodoki |
2012 |
1 |
- |
| Ontama |
2009 |
2 |
- |
| Onsen Yôsei Hakone-chan |
2012 |
2+ |
- |
| Onnanoko ga Shinu Hanashi |
2013 |
1 |
- |
| Onnanoko Atsumare! |
1970 |
1 |
- |
| Onna Yûsha to Shota Orc |
2019 |
1+ |
- |
| Onna No Kataki Wa Onna |
1990 |
1 |
- |
| Onna No Ie |
2012 |
2+ |
- |
| Onmyôji |
1994 |
13 |
- |
| Onmyô Taisenki |
2004 |
3 |
- |
| Only You - Tobenai Tsubasa |
1997 |
8 |
- |
| Only One |
2012 |
1 |
- |
| Only Love |
2009 |
1 |
- |
| Online - The Comic |
2013 |
10+ |
- |
| Oninagi |
2007 |
4 |
- |
| Onikirimaru |
1991 |
20 |
- |
| Onii-chan wa Oshimai! |
2017 |
1 |
- |
| Onii-Chan Control |
2009 |
5 |
- |
| Onihime VS |
2010 |
4 |
6 (1) |
| Onihime |
1972 |
1 |
- |
| Onihei Crime Reports in Edo |
1993 |
1 |
- |
| Onidere |
2008 |
4+ |
- |
| Oni |
1997 |
1 |
- |
| Oneman Army Gatse |
2008 |
1 |
- |
| Oneira - L'enfant Cauchemar |
2022 |
4 |
- |
| Oneichan To Issho |
2004 |
5 |
- |
| Onegai Twins |
2005 |
1 |
- |
| Onegai Kami-sama! |
2010 |
1 |
- |
| Onee-chan ga Kita |
2010 |
2+ |
- |
| Onee-Chan Dorobô |
2007 |
1 |
- |
| One Room, Hiatari Futsû, Tenshitsuki |
2020 |
6+ |
- |
| One Room Angel |
2019 |
1 |
- |
| One Punch Man |
2012 |
20+ |
8.5 (2) |
| One piece X Toriko - Shonen Heroes |
2012 |
2 |
- |
| One Piece Red (Grand Characters) |
2002 |
1 |
- |
| One Piece Blue (Grand Data File) |
2002 |
1 |
- |
| One Piece - Color Walk 2 (Artbook) |
2003 |
1 |
- |
| One Piece - Color Walk 1 (Artbook) |
2001 |
1 |
- |
| One Piece |
1997 |
100+ |
7.8 (14) |
| One Outs |
1998 |
19 |
- |
| One Day |
2002 |
1 |
- |
| One |
1998 |
11 |
- |
| Once Again |
2012 |
1 |
- |
| Onani Master Kurosawa |
2005 |
4 |
9.8 (4) |
| Onaji Sora wo Mieteiru |
2011 |
1 |
- |
| On-Sight! |
2004 |
2 |
- |
| On The Frontier |
2016 |
1 |
- |
| On Air Dekinai! |
2017 |
1 |
- |
| Omuraisu |
1998 |
5 |
- |
| Omoikkiri Nakeru Koi |
1999 |
1 |
- |
| Omo Ni Naitemasu |
2010 |
10 |
- |
| Omicchan ga Konya mo Yatte Kuru |
1960 |
1 |
- |
| Omiai Aite Wa Oshiego, Tsuyoki Na, Mondaiji. |
2016 |
2+ |
- |
| Omega J |
1997 |
1 |
- |
| Omega Complex |
2008 |
3 |
- |
| Omega 7 |
1994 |
1 |
- |
| Oméga - Alien Mégalo Sous Contrôle |
2014 |
3 |
- |
| Omega |
1999 |
6 |
- |
| Omamori Himari |
2007 |
4+ |
8 (1) |
| Omae wa Mada Gunma wo Shiranai |
2013 |
8+ |
- |
| Olympus no Poron |
1981 |
2 |
- |
| Olympos |
2007 |
2 |
- |
| Olympia Kyklos |
2018 |
4 |
- |
| Ole Golazo |
2016 |
2 |
- |
| Oldman |
2013 |
4 |
- |
| Old West |
2018 |
1 |
- |
| Old Knight Bard Loen |
2016 |
9+ |
- |
| Old Home no Haibane Tachi - Nikan |
2001 |
1 |
- |
| Old Home no Haibane Tachi - Haibane Seikatsu Nisshi |
2002 |
1 |
- |
| Old Home no Haibane Tachi - Bangaihen |
2003 |
1 |
- |
| Old Home no Haibane Tachi |
2001 |
1 |
- |
| Old Fashion Cupcake |
2019 |
2 |
- |
| Old Dog |
2014 |
2 |
- |
| Old Boy (Edition Double) |
1997 |
4 |
- |
| Old Boy |
1997 |
8 |
5.7 (3) |
| Okujô Pika Pika Romance |
2014 |
1 |
- |
| Okujô No Bai-Bai |
2007 |
1 |
- |
| Okujô De Kimi To Yume Miru |
2013 |
1 |
- |
| Oku-sama wa Mahô Shôjo |
2005 |
3 |
- |
| Oku-Sama Ga Seito Kaichô! |
2011 |
7+ |
- |
| Okoshiyasu, Chitose-chan |
2016 |
1+ |
- |
| Okojo-san |
1998 |
8 |
- |
| Okite Saisho Ni Suru Koto Wa |
2013 |
1 |
- |
| Okinawa de Suki ni Natta Ko ga Hougen Sugite Tsura Sugiru |
2020 |
9+ |
- |
| Oki ni Mesu Mama? |
2008 |
1 |
- |
| Okazaki Ni Sasagu |
2015 |
2+ |
- |
| Ôkami-san to Shichinin no Nakama-tachi |
2010 |
4 |
- |
| Ôkami Shôjo Laura |
1992 |
1 |
- |
| Ôkami no Hôsei |
2005 |
1 |
- |
| Ôkami Kakushi - Keshi Murasaki No Shô |
2009 |
3 |
- |
