| Nokorimono ni wa Ai ga Aru!? |
2008 |
1 |
- |
| Nomi & Shiba |
2019 |
3+ |
- |
| Nômin Kanren no Skill bakka Agetetara Naze ka Tsuyoku Natta. |
2018 |
8+ |
- |
| Nonamour (La Vie d'Amour) |
1992 |
1 |
- |
| Noragami |
2010 |
27 |
- |
| Noragami Histoires Errantes |
2011 |
1 |
- |
| Nos Différences Enlacées |
2017 |
6+ |
- |
| Nos Meilleures Vies |
2018 |
1 |
- |
| Nos Précieuses Confidences |
2015 |
6+ |
- |
| Nosatsu Junkie |
2004 |
16 |
- |
| Nostalgia |
2005 |
1 |
- |
| Nozo x Kimi |
2011 |
1+ |
- |
| Nozokiana |
2009 |
13 |
8.5 (2) |
| Nozomi Witches |
1986 |
48 |
- |
| Nude |
2000 |
1 |
- |
| Nude Fruits |
2005 |
3 |
- |
| Nuisible |
2013 |
3 |
- |
| Number Girl |
2011 |
1 |
- |
| Nurse Angel Ririka SOS |
1995 |
4 |
- |
| Nuts |
2000 |
4 |
- |
| Nyan Koi! |
2007 |
4+ |
- |
| O.B. |
2012 |
2 |
- |
| Obaka-Chan |
2008 |
7 |
- |
| Obi o Gyutto ne! |
1988 |
30 |
- |
| Ôbô Ookami To Shôshin Akazukin |
2013 |
1 |
- |
| Oboko |
2004 |
1 |
- |
| Oboreru Hanabi |
2009 |
2 |
- |
| Ocean Colored Polaris |
2018 |
1 |
- |
| Ocha Nigosu |
2007 |
11 |
- |
| Octave |
2008 |
6 |
9 (1) |
| Oda Nobuna no Yabô |
2011 |
5+ |
- |
| Oh My God! |
2006 |
5 |
- |
| Ohayô Okaeri |
2011 |
5 |
- |
| Ôhikkoshi |
2001 |
1 |
- |
| Ohisama Egao |
2000 |
1 |
- |
| Ohisama No Hana |
1998 |
1 |
- |
| Oishii Coffee No Irekata |
2019 |
3+ |
- |
| Oishii Kankei |
1993 |
16 |
- |
| Oishii Kimi List |
2010 |
1 |
- |
| Ôji No Hakobune |
2003 |
1 |
- |
| Ôji to Kojiki |
2010 |
1+ |
- |
| Ôji-sama Kôrin |
2010 |
1 |
- |
| Ôji-sama to Inu |
2013 |
1 |
- |
| Ojisan to Marshmallow |
2014 |
2+ |
- |
| Ojô To Banken-kun |
2018 |
2+ |
- |
| Ojô-Sama No Gohôbi |
2006 |
1 |
- |
| Ojô-Sama No Himitsu |
2008 |
1 |
- |
| Ojojojo |
2012 |
2+ |
- |
| Ojōsama Gomeirei o |
2007 |
1 |
- |
| Okaeri Alice |
2020 |
1+ |
- |
| Okaeri, Boku No Hanayome |
2013 |
1 |
- |
| Okama Report |
1989 |
5 |
- |
| Ôkami-san to Shichinin no Nakama-tachi |
2010 |
4 |
- |
| Oki ni Mesu Mama? |
2008 |
1 |
- |
| Okite Saisho Ni Suru Koto Wa |
2013 |
1 |
- |
| Oku-Sama Ga Seito Kaichô! |
2011 |
7+ |
- |
| Oku-sama wa Mahô Shôjo |
2005 |
3 |
- |
| Okujô De Kimi To Yume Miru |
2013 |
1 |
- |
| Okujô No Bai-Bai |
2007 |
1 |
- |
| Okujô Pika Pika Romance |
2014 |
1 |
- |
| Old Fashion Cupcake |
2019 |
2 |
- |
| Omamori Himari |
2007 |
4+ |
8 (1) |
| Omiai Aite Wa Oshiego, Tsuyoki Na, Mondaiji. |
2016 |
2+ |
- |
| Omo Ni Naitemasu |
2010 |
10 |
- |
| Omoikkiri Nakeru Koi |
1999 |
1 |
- |
| Omuraisu |
1998 |
5 |
- |
| Onaji Sora wo Mieteiru |
2011 |
1 |
- |
| Once Again |
2012 |
1 |
- |
| One |
1998 |
11 |
- |
| One Day |
2002 |
1 |
- |
| One Room Angel |
2019 |
1 |
- |
| One Room, Hiatari Futsû, Tenshitsuki |
2020 |
6+ |
- |
| Onee-Chan Dorobô |
2007 |
1 |
- |
| Onegai Kami-sama! |
2010 |
1 |
- |
| Onegai Twins |
2005 |
1 |
- |
| Oneichan To Issho |
2004 |
5 |
- |
| Onidere |
2008 |
4+ |
- |
| Onihime VS |
2010 |
4 |
6 (1) |
| Onii-Chan Control |
2009 |
5 |
- |
| Online - The Comic |
2013 |
10+ |
- |
| Only Love |
2009 |
1 |
- |
| Only One |
2012 |
1 |
- |
| Only You - Tobenai Tsubasa |
1997 |
8 |
- |
| Onna No Kataki Wa Onna |
1990 |
1 |
- |
| Onnanoko Atsumare! |
1970 |
1 |
- |
| Onnanoko ga Shinu Hanashi |
2013 |
1 |
- |
| Onsen Yôsei Hakone-chan |
2012 |
2+ |
- |
| Ontama |
2009 |
2 |
- |
| Onzôshi No Otehodoki |
2012 |
1 |
- |
| Oogata Shinjin No Kyouikukei |
2015 |
1 |
- |
| Ookami Heika No Hanayom |
2009 |
14+ |
- |
| Ookami Ni Kuchizuke |
2012 |
2 |
- |
| Ookamidomo No Shitsukekata |
2011 |
1 |
- |
| Ootagawa Junjou Lovers |
2013 |
1 |
- |
| Open 24 hours a day |
2009 |
1 |
- |
| Open Sesame |
2001 |
17+ |
- |
| Opera-za de Mattete |
1990 |
1 |
- |
| Orange |
2006 |
1 |
5 (1) |
| Orange (Takano Ichigo) |
2012 |
6 |
- |
| Orange Bubble Gum |
2005 |
4+ |
- |