| Konkon Chiki | 2015-07-20 | - (1) |
| Konkon-Chiki | 2016-08-05 | - |
| Konna Atashi de mo... | 2001-07-27 | 6.50 (18) |
| Konna Horror Otome Game o Tsukurou to Omou ga Ikaga ka? | 2015-12-11 | - |
| Konna Kaze ni Hidoku Mushiatsui Hi | 2005 | - |
| Konna Koto mo Aru Kamo ne? | 2004-10-29 | - |
| Konna Musume-tachi ni Omoikkiri Shasei Shitai -Aru Bishoujo Senshi-tachi no Hentai Ganbou- | 2013-10-31 | 6.20 (11) |
| Konna Suteki na Megaphone de Kawaii Ano Ko o Mechakucha ni!! | 2008-11-14 | - |
| Konna Watashi o Yurushite | 2008-06-22 | - (1) |
| Konneko | 2004-10-29 | 6.90 (13) |
| Kono Ai wa ￭￭ Dake no Mono | 2025-11-22 | - |
| Kono Aozora ni Yakusoku o | 2006-03-31 | 7.90 (338) |
| Kono Bushitsu wa Kitaku Shinai Bu ga Senkyo Shimashita. Portable - Gakuen Dog Ear Hen | 2012-10-25 | 7.20 (12) |
| Kono Bushitsu wa Kitaku Shinai Bu ga Senkyo Shimashita. Portable - Gakuen Summer Wars Hen | 2012-08-02 | 7.10 (9) |
| Kono Darashi no Nai Da-megami ni Haiboku o! ~Bitch no Yuuwaku ni wa Zettai ni Maketakunai Kei ADV~ | 2017-12-18 | 5.40 (14) |
| Kono Douga wa Saisei Dekimasen | 2019-05-27 | - |
| Kono Futarikiri no Koya de Mitsugetsu o! | 2018-10-18 | - |
| Kono Hentai! Onanii Shiro yo | 2016-06-16 | - |
| Kono Hoshi Saigo no Ren'ai o. | 2019-02-14 | - |
| Kono Inori ga Todoku You ni | 2014-08-17 | - |
| Kono Kawairashii Onna-tachi Shukufuku o! | 2017-12-06 | - (2) |
| Kono Koi, 5-fun de Owarimasu. | 2026-04-01 | - (2) |
| Kono Koi, Seishun ni Yori. | 2016-04-28 | 7.10 (73) |
| Kono Mune no Naka Ikite... ~Find Love EX 2~ | 2000-10-20 | - (1) |
| Kono Nazo ni wa Wake ga Aru | 2017-12-03 | - (2) |
| Kono Nee-chan, Kaouze! | 2011-09-13 | - (4) |
| Kono Oozora ni, Tsubasa o Hirogete | 2012-05-25 | 7.70 (6191) |
| Kono Oozora ni, Tsubasa o Hirogete: FLIGHT DIARY | 2013-01-25 | 7.70 (793) |
| Kono Oozora ni, Tsubasa o Hirogete: snow presents | 2014-07-25 | 7.30 (171) |
| Kono Sekai ni Bad End wa Sonzai Shinai | 2023-12-01 | - (1) |
| Kono Sekai no Mukou de | 2012-11-30 | 6.40 (17) |
| Kono Sora ga Tsuieru Toki ni | 2003-07-25 | 6.40 (8) |
| Kono Subarashii Sekai ni Shukufuku o! -Kono Yokubukai Game ni Shinpan o!- | 2017-09-07 | 7.30 (28) |
| Kono Subarashii Sekai ni Shukufuku o! ~Kono Yokubou no Ishou ni Chouai o!~ | 2020-09-24 | 6.70 (64) |
| Kono Uta ga Owattara ~When This Song Is Over~ | 2010-08-06 | 6.40 (26) |
| Kono Watakushi ga... Konna Shokushu de Iku Nante! ~Shokushu Bishonure Kouman JK Anju~ | 2010-08-07 | 5.60 (12) |
| Kono Yo de Mottomo Zankoku na Kiss | 2010-02-14 | 6.40 (10) |
| Kono Yo no Hate de Koi o Utau Homo | 2015-01-20 | - |
| Kono Yo no Hate de Koi o Utau Shoujo YU-NO | 1996-12-26 | 8.10 (2209) |
| Kono Yoru ga Akenai you ni Kiss Shite | 2024-08-08 | - |
| Kono mama da to Otouto ga Techno Break de Shinjau kara Kozukuri! | 2017-05-26 | 7.70 (158) |
| Kono mama ja, Ane to Sex Shite Shimau!? -Are, Otouto yo, Ima Naka de Dasanakatta?- | 2009-10-30 | 7.40 (104) |
| KonoSuba The Harem Adventures | 2025-02-11 | 6.90 (6) |
| Konoe Kishi Lattice | 2007-10-05 | 6.00 (6) |
| Konoha Challenge | 2001-12-14 | - (3) |
| Konoha Milfs | 2026-05-12 | 6.60 (6) |
| Konoha ga Akaku Somaru Made | 2024-10-18 | - (2) |
| Konohana | 2006-08-12 | - (2) |
| Konohana 2 ~Todokanai Requiem~ | 2002-05-30 | - (2) |
| Konohana 3 ~Itsuwari no Kage no Mukou ni~ | 2003-05-01 | - (2) |