| Koi no Su ☆ Ichacolize | 2017-03-31 | 7.20 (93) |
| Koi no Kate | 2017-07-17 | - |
| Koi no Kara | 2019-06-18 | - |
| Koi no Jiken wa Totsuzen ni | 2015-04-19 | 5.40 (15) |
| Koi no Inazuma Chuuihou! ~Nagisa no 5 days~ | 2011-04-19 | - |
| Koi no Iko | 2010-10-15 | - |
| Koi no Honey Trap ~Ecchi de Amai Honey Trap~ | 2016-01-29 | 6.40 (15) |
| Koi no Hisshoku Bunkatsu | 2013-11-02 | - |
| Koi no Hashi | 2007-12-31 | - (3) |
| Koi no Hanashi to | 2013-02-28 | 6.30 (22) |
| Koi no Hanasaku Hyakkaen | 2020-01-30 | - (3) |
| Koi no Gensoukyoku | 2013-09-21 | - |
| Koi no Chousa Kiroku | 2011-12-28 | - |
| Koi ni, Kanmi o Soete 2 | 2018-12-31 | 6.80 (270) |
| Koi ni, Kanmi o Soete | 2017-12-31 | 6.60 (813) |
| Koi ni wa Amae ga Hitsuyou Desu ~Motto Amaete Morau Dake MiniFanDisc | 2024-01-26 | 7.50 (41) |
| Koi ni wa Amae ga Hitsuyou Desu ~Motto Amaeru Dake MiniFanDisc | 2024-02-22 | 7.40 (38) |
| Koi ni wa Amae ga Hitsuyou Desu | 2023-03-31 | 7.60 (179) |
| Koi ni Ochite wa Ikenai 20-Ppun | 2021-07-24 | 6.10 (6) |
| Koi ni Ochita Kaizokuou | 2011-06-25 | 6.90 (70) |
| Koi mo Noroi mo Hakaba Made , | 2025-04-21 | - |
| Koi mo H mo Obenkyou mo, Omakase! Oneechan-bu | 2013-05-31 | 6.90 (56) |
| Koi ga Saku Koro Sakura Doki | 2014-06-27 | 7.30 (2631) |
| Koi de wa Naku - It's not love, but so where near. | 2011-05-27 | 7.70 (98) |
| Koi Tsuzuri | 2017-04-07 | - |
| Koi Tenshi | 1997-12-12 | - (3) |
| Koi Suru! Brother-kun | 2013-12-14 | 6.10 (5) |
| Koi Suru Tamagotti | 2002-10-22 | - |
| Koi Suru Pecora wa Machigaenai | 2016-01-26 | 6.40 (6) |
| Koi Suru Otome to Shugo no Tate ~Bara no Seibo~ | 2016-02-26 | 7.50 (74) |
| Koi Suru Ojou-sama wa Ecchi na Hanayome | 2016-08-26 | 7.00 (55) |
| Koi Suru Kokoro to Mahou no Kotoba | 2018-05-25 | 7.00 (95) |
| Koi Suru Kimochi no Kasanekata | 2015-11-27 | 7.30 (189) |
| Koi Suru Kimochi no Hanakotoba | 2014-02-28 | 7.20 (29) |
| Koi Suru Kanojo no Bukiyou na Butai | 2014-11-28 | 7.30 (222) |
| Koi Suru Imouto wa Setsunakute Onii-chan o Omou to Sugu H Shichau no | 2003-07-25 | 6.30 (9) |
| Koi Suru Doll to Omoi no Kiseki ~Poupee de Souhaits~ | 2014-02-28 | 7.30 (80) |
| Koi Suru Amairo Homestay -Ryuugakusei wa Wanko-kei Osananajimi | 2022-06-24 | 6.60 (43) |
| Koi Shiyo? | 2013-05-24 | 7.40 (58) |
| Koi Shiteshimatta Hoshi no Ouji | 2014-08-08 | 6.70 (73) |
| Koi Shite Aniken | 2012-12-10 | - |
| Koi Shikaru-beki ~Mayoiga kara no Tegami~ | 2026-04-13 | - |
| Koi Shichi Yo | 2014-02-28 | 6.70 (17) |
| Koi Sentai Love & Peace the P.S.P. | 2012-08-30 | 6.20 (5) |
| Koi Saku Miyako ni Ai no Yakusoku o ~Annaffiare~ | 2013-07-26 | 7.00 (71) |
| Koi Saku Kagami | 2023-02-14 | - (1) |
| Koi Q! ~Koi to H no Midareuchi~ | 2005-06-10 | 6.80 (15) |
| Koi Peda! | 2014-10-12 | - (1) |
| Koi Otome | 2006-08-25 | - (3) |
| Koi Ninja ~Ai to Yokubou no Heian Ranbu~ | 2012-12 | 6.90 (68) |