| Koi no Su ☆ Ichacolize | 2017-03-31 | 7.20 (93) |
| Koi no Summer Fantasy in Miyazaki Seagaia | 1997-08-22 | - |
| Koi no Sweet Tart wa Ikaga? | 1999-07-09 | - (1) |
| Koi o Shimashou | 2004-01-21 | - |
| Koi suru Hakodate- Bokura to Sugosu Hakodate no Natsu | 2014-02-01 | - |
| Koi to H Shika Shiteinai! | 2023-09-29 | 6.70 (39) |
| Koi to Koi Suru Utopia | 2016-06-24 | 6.90 (83) |
| Koi to Mahou no Tea Party | TBA | - |
| Koi to Mahou to Kanrinin | 2015-08-28 | 6.80 (18) |
| Koi to Mizugi to Taiyou to ~Sumire-jima Life Savers~ | 2010-09-24 | 7.00 (28) |
| Koi to Nikki to Kami-sama to. | 2020 | - |
| Koi to Senkyo to Chocolate | 2010-10-29 | 7.30 (3091) |
| Koi to Tatakai no Yukue wa | 2015-06-12 | - |
| Koi to Tsumi | 2015-01-27 | - (4) |
| Koi to Yuujou no Kyoukaisen | 2013-08-12 | - (1) |
| Koi to xx no Femdom | 2017-08-25 | 7.00 (101) |
| Koi to, Guitar to, Aoi Sora. | 2015-08-16 | 6.40 (70) |
| Koi wa Alf Laylah | 2021-01-09 | - (2) |
| Koi wa Aru Asa, Akuma-chan ga! | 2013-12-26 | - |
| Koi wa Houteishiki | 1998-08 | - |
| Koi wa Mofumofu! Love Me Teddy | 2018-08-31 | 6.90 (35) |
| Koi wa Rule ni Shibararenai! | 2012-11-29 | 6.60 (11) |
| Koi wa Sotto Saku Hana no You ni | 2018-06-29 | 7.60 (159) |
| Koi wa Sotto Saku Hana no You ni ~Futari wa Eien ni Yorisotte Iku~ | 2019-03-29 | 7.90 (67) |
| Koi wa Yumemiru Mouretsu Girl! | 2016-12-22 | 7.10 (37) |
| Koi x Mitsu ~Yaeneri Saki to Akai Ito no Ouji-sama~ | 2021-04-30 | 6.70 (38) |
| Koi x Shin Ai Kanojo | 2015-10-30 | 7.50 (761) |
| Koi ☆ Katsu! | 2011-02-25 | 6.00 (9) |
| Koi-Labo. | 2010-02-26 | - (4) |
| Koi-ken! | 2010-01-27 | - |
| KoiGIG ~Devil×Angel~ | 2007-11-02 | 6.90 (5) |
| Koibana Days | 2013-06-20 | 6.60 (24) |
| Koibana Ren'ai | 2023-09-29 | 7.50 (239) |
| Koibana Ren'ai - Mini Fandisk - After Festival | 2024-03-29 | 7.30 (107) |
| Koibito 7days | 2010-09-28 | - (1) |
| Koibito = Love x Sex | 2008-12-19 | 6.60 (8) |
| Koibito = Love x Sex 2 | 2009-12-17 | 6.30 (5) |
| Koibito = Love x Sex 3 | 2010-08-02 | 6.70 (8) |
| Koibito = Love x Sex 4 | 2011-11-25 | 6.90 (7) |
| Koibito = Love x Sex 5 | 2011-11-25 | 6.30 (7) |
| Koibito Aika to Moto Kare ~Futatabi Ano Otoko ni Dakare Kairaku ni Iki Kuruu Ai Suru Kanojo | 2022-04-28 | 5.60 (25) |
| Koibito Airi o Daita Hoka no Otokotachi ~ Aisuru Koibito ga Ore no Moto kara Satta Wake | 2023-08-25 | 6.00 (7) |
| Koibito Kikyou: Netorare Denki ADV | 2009-03-10 | - |
| Koibito Koukan - Rubber Swap | 2011-01-04 | - |
| Koibito Swapping ~Shin'yuu no Koibito o Ore wa Daki, Ore no Koibito wa Shin'yuu ni Dakareru~ | 2020-07-22 | 6.80 (144) |
| Koibito Yuugi | 2007-08-24 | 6.70 (73) |
| Koibito wa Doukyonin | 2009-04-17 | 6.00 (9) |
| Koibito wa Kouan Keiji | 2014-06-30 | 6.30 (21) |
| Koibito wa Nido Netorareru | 2020-09-25 | 5.40 (19) |
| Koibito wa Onii-chan | 2004-02 | - |