| Houkago 3 ~Nerawareta Junketsu~ | 2016-02-25 | 7.70 (133) |
| Houkago AV Kenkyuubu | 2017-08-11 | - |
| Houkago Alice wa Kiss o Shite | 2013-07 | - (1) |
| Houkago Azunyan | 2009-08-15 | 6.10 (5) |
| Houkago Biniku Choukyou Dorei Club - NABURI | 1999-04-01 | - (2) |
| Houkago Choukyou Club ~Hokenshitsu no Mesudorei~ | 2006-01-20 | 6.10 (5) |
| Houkago Cinderella | 2020-08-28 | 7.60 (413) |
| Houkago Cinderella 2 | 2022-09-30 | 7.80 (175) |
| Houkago Cinderella 2 Mini Fandisk ~Kimi to Odoru Hajimete no Happy Halloween~ | 2023-06-30 | 7.20 (41) |
| Houkago Cinderella Mini Fandisk ~Anata to Kaeru Saigo no Gekoudou~ | 2022-01-28 | 7.40 (90) |
| Houkago Colorful * Step | 2014-01-09 | 6.20 (17) |
| Houkago Counseling Room | 2026-05-29 | - (2) |
| Houkago Custom☆Time ~Customize Lovers~ | 2011-07-29 | 6.40 (18) |
| Houkago Dokidoki Hadaka Dessan | 2017-03-24 | - |
| Houkago Dorei | 2004-05-24 | - (1) |
| Houkago Dorei-tachi | 2005-02-21 | - (1) |
| Houkago Ecchi Time ~Yuu to Mio, Midara ni Modae Ochiteiku...~ | 2009-12-30 | - (2) |
| Houkago Escalation ~Omoide o Kudasai~ | 2016-11-08 | - (1) |
| Houkago Gekisha Club ~In'yoku no Motif~ | 2005-10-28 | - (3) |
| Houkago H Time | 2009-08-16 | - (3) |
| Houkago Josou ☆ Net Idol ~Minna no Tame no Sei Pet~ | 2012-07-20 | 5.80 (28) |
| Houkago Josou ☆ Tsundere Bitch ~Aitsu wa Boku no Sexfriend... Datta no ni?!~ | 2013-03-29 | 6.20 (17) |
| Houkago Kei-On! Club | 2010-07-13 | - (1) |
| Houkago Koakuma Life | 2012-02-25 | 6.00 (6) |
| Houkago Kyouhansha ~Barista Shibou no J* ga Houkago Ecchi ni Muchuu na Wake~ | 2021-08-29 | - |
| Houkago Mai-HiME Club 2 ~Otome no Nichijou~ | 2006-07-11 | - (1) |
| Houkago Mania Club ~Koi no Hoshii no~ | 1997-06-13 | 6.00 (5) |
| Houkago Nyannyan Club | 2006-12-31 | 6.10 (22) |
| Houkago Ouji R ~Anata wa Dare to Kaeru?~ | 2022-05-19 | - (1) |
| Houkago Ouji ~Anata wa Dare to Kaeru?~ | 2016-09-02 | - (3) |
| Houkago Ren'ai Club ~Koi no Etude~ | 1996-12-13 | 5.90 (299) |
| Houkago Ryoujoku Seitokai ~M Kaichou no Hakudaku Bukkake Gekokujou~ | 2008-11-22 | 5.90 (8) |
| Houkago Saimin Club | 2011-08-12 | 6.40 (32) |
| Houkago Saimin Club 2 | 2012-12-27 | 6.00 (23) |
| Houkago Saimin Club 3 | 2015-12-31 | 6.10 (25) |
| Houkago Ura Lesson ~Seikyouiku wa Sensei ni Omakase!~ | 2011-01-07 | 6.40 (12) |
| Houkago Yakou Jugyou: Bibou Oyako no Tokubetsu Lesson | 2014-01-24 | 6.00 (15) |
| Houkago Yuri Ecchi | 2018-05-07 | 6.10 (14) |
| Houkago no Ban'yuu Inryoku | 2014-09-07 | - |
| Houkago no Futekikakusha | 2014-05-30 | 6.60 (97) |
| Houkago no Hoken'i ~Ane Juujoku~ | 2007-03-30 | 6.40 (9) |
| Houkago no Iinchou ~Himitsu no Gakuen Seikatsu~ | 2009-08-11 | - (2) |
| Houkago no Jokyoushi ~Mishiranu Otoko ni Osowarete~ | 2013-03-22 | - |
| Houkago no Kamen | 2011-11-06 | - |
| Houkago no Kimi ni Koi Shite | 2015-01-23 | - |
| Houkago no Kyoushitsu de | 2012-08-04 | - |
| Houkago no Love Beat | 2004-06-10 | - |
| Houkago no Maid | 2001-10-19 | - (2) |
| Houkago no Manager Hakudaku Rinkan no Ground ni Chitta Shojo Ikenie Saotome Chizuru | 2008-11-07 | 5.80 (5) |
| Houkago no Senpai | 2007-08-03 | 6.60 (23) |