| Onii-chan wa Shokushu | 2004-04 | - |
| Onii-chan wa Chuunibyou | 2014-08-17 | - (1) |
| Onii-chan to, Futago to, Imouto to. | 2005-04-18 | - (1) |
| Onii-chan to Watashi | 2026-03-06 | - |
| Onii-chan to Sakura ~c.captor sakura~ | 2007-04-18 | - (1) |
| Onii-chan to Issho | 1999-04-23 | - (3) |
| Onii-chan to Boku Extra Edition!! ~Subaru vs Kaoru Isshuukan Gentei Minato Soudatsu Sen~ | 2016-02-05 | - |
| Onii-chan no Yousu ga Hen!? | 2002-05-28 | - |
| Onii-chan no Seiheki, Watashi ga Mitsukete Ageru♪ ~Kyou kara Boku wa Imouto no Omocha~ | 2019-09-06 | 5.90 (43) |
| Onii-chan no Otoshikata ~Futago no Shimai Hen~ | 2012-01-07 | - |
| Onii-chan no Ofuro Soudanshitsu | 2014-04-29 | 6.10 (20) |
| Onii-chan ni Amaetagari na Imouto de Gomen ne! | 2018-06-02 | - (3) |
| Onii-chan ga Zenra de Yobai o Shite Kita Kara Ukeiretechatta. Na, Nani o Itteru no ka Wakaranai to Omoukedo. | 2015-08-16 | - |
| Onii-chan ga Sukisugiru!! | 2018-08-16 | - |
| Onii-chan ga Kattara Nandemo Shite Ageru yo? | 2022-03-30 | - (1) |
| Onii-chan Yamete 2 | 2003-09-19 | - (2) |
| Onii-chan Yamete | 2002-04-26 | - (1) |
| Onii-chan Teacher ~Himitsu no Jugyou o Kibou Shimasu!~ | 2015-12-25 | 6.80 (81) |
| Onii-chan Suki Desu ka | 2000-12-30 | - (1) |
| Onii-chan Sharing | 2013-09-27 | 7.20 (164) |
| Onii-chan Nanka Daikkirai! | 2018-01-05 | - |
| Onii-chan Mou Icchatta no? | 2011-08-13 | 5.40 (22) |
| Onii-chan Jushinchuu | 2002-09-20 | - (2) |
| Onii-chan Daisuki! ~Love? Or Like?~ | 2007-08-17 | 6.30 (21) |
| Onii-chan Daisuki! | 2017-07-28 | 7.40 (133) |
| Onii-chan Daisuki! | 2008-08-17 | 5.70 (13) |
| Onii-chan Chou Suki 99 Jikan Ecchi Shiyo! | 2021-04-30 | 7.20 (61) |
| Onii-chan Asobo | 2019-09-27 | 5.30 (110) |
| Onii-Chan | 2018-03-27 | 3.60 (15) |
| Oniguisama | 2020-12-13 | - (2) |
| Onigokko! Fandisc | 2011-09-30 | 7.20 (237) |
| Onigokko! | 2011-03-31 | 7.10 (656) |
| Onigawara ~The God's Holy War and Record~ | 2009-10-21 | - |
| Onigashirajima Joshi Keimusho | 1994-11-02 | 5.90 (6) |
| Onigashima | 2025-09-29 | - (1) |
| Oniboku ~Oni Musume Inkan~ | 2018-12-25 | 5.80 (58) |
| OniAi ~Gimic LOw Higashiyama Shou~ | 2012-12-06 | - (3) |
| OniAi ~Datte Suki Suki Daisuki~ | 2005-04-23 | - |
| Oni wa Soto, Fuku wa Uchi | 2007-04-07 | - |
| Oni sdelany iz mjasa | 2015-01-04 | - (1) |
| Oni o Kurawaba Hana Chirinu | 2022-12-26 | - (1) |
| Oni no Yomeiri | 2020-08-27 | - (3) |
| Oni no Warau Koro | 2005-12-30 | - (1) |
| Oni no Wakusei | 2013-10-04 | - (4) |
| Oni no Shima | 2013-07-15 | - |
| Oni no Oto | 2017-07-08 | - |
| Oni no Miya | 2010-06-20 | - |
| Oni no Kamen | 2013-08-18 | 6.60 (9) |
| Oni ga Kuru. ~Ane ga Hinshi de Pinchi Desu~ | 2017-09-29 | 7.10 (52) |
| Oni Uta. ~Oni ga Kitarite, Amaesasero to Notamouta.~ | 2009-06-26 | 6.60 (83) |