| Seishun Lilybell | 2017-08-11 | - |
| Seishun Kareshi ~Danshi-kou no Himegoto~ | 2014-05-13 | - (3) |
| Seishun Hajimemashita! | 2013-10-31 | 7.40 (34) |
| Seishun Fragile | 2020-08-28 | 7.40 (152) |
| Seishun Erography Makikan!! ~Nanase Maki wa Sunao Janai!!~ | 2016-03-04 | 7.00 (11) |
| Seishun 18 Radio | 2002-03-29 | - (1) |
| Seishukujo e no Aiiku Choukyou ~Somerareru Junketsu~ | 2017-08-04 | 6.00 (92) |
| Seishori Sister | 2022-02-05 | - (1) |
| Seishori Club 2 ~Kosutte Nobiru Shinjin Kyouiku~ | 2010-08-27 | - (2) |
| Seishokusha ~Ochiyuku Touma no Gakuen~ | 2007-12-01 | - (2) |
| Seishoku Taiiku Kyoushi ~ Gakuen Hatsudashi Namashibori | 2009-09-18 | 5.70 (12) |
| Seishoku Ryoujoku ~Onna Kyoushi Kan'in~ | 2007-08-19 | - (1) |
| Seishinteki Gaishou ~Trauma~ | 1997-04-04 | - (1) |
| Seishin Seiai Paraphilia | 2013-03-08 | 5.60 (17) |
| Seishin Osen | 2009-07-17 | 6.20 (9) |
| Seishin Kenkyuu no Jikken Ningen | 2020-08-31 | - (1) |
| Seishin Irekawari - Hitozuma to Kuro Gyaru no Seishin ga Irekawatta Hi | 2012-04-24 | 5.60 (10) |
| Seishin Hakai Kanketsuhen | 2000-01-15 | - |
| Seishin Hakai | 1998-10 | - (4) |
| Seishi Jidou Hanbaiki no Seinen | 2014-09-25 | - |
| Seisenki Valkyrie Sisters ~Yami ni Ochita Idol~ | 2011-02-25 | 6.80 (30) |
| Seisenki Iris The Game | 2025-01-31 | 5.70 (10) |
| Seiseki Yuushuu na Oshiego wa Ecchi na Obenkyou mo Chou Yuushuu! | 2013-09-05 | 6.70 (12) |
| Seisai ~Hakudaku no Misogi~ | 2002-03-22 | 6.30 (9) |
| Seisai no Resonance | 2013-02-22 | 7.30 (210) |
| Seisai Chiryou ~Chijoku ni Nureru Hakui~ | 2002-12-13 | 5.70 (5) |
| Seiryou Lez Gakuen Rikujoubu Shitsunai de no Ingyaku Katsudou | 2013-06-30 | - |
| Seiryaku ~Koukyuu de no Himegoto~ | 2000-06-23 | - (2) |
| Seiryaku Kekkon o Kaihi Shitai no de Dareka Dousei Shite Kurenai ka | 2022-01-10 | - (4) |
| Seiritsuu de Tsurai Toki Naito-san ga Nagusametekureru Game | 2022-12-24 | - (2) |
| Seirenkeppaku Junketsu Jigoku | - | - |
| Seiren "Touhou Sei Renbo" | 2013-05-26 | - |
| Seireki 2236-nen no Masuko | 2013-12-31 | 6.20 (86) |
| Seireki 2236-nen | 2015-04-06 | 7.30 (249) |
| Seireisai | 2001-09-21 | - |
| Seirei no Nemuru Mori - Forest Of Fate | 2021-02-23 | - |
| Seirei no Kuni no Chijo Hime-tachi ~Elfkko to Nekomimikko to Akumakko, Soshite Boku no Hatsujou Harem Days~ | 2009-11-27 | 6.10 (14) |
| Seirei no Himegimi Stea ~Stoom Core no Densetsu~ | 2012-10-19 | 5.90 (29) |
| Seirei no Dystopia | 2015-08-22 | - (1) |
| Seirei Tenki Seraphim Force | 2007-06-17 | - (2) |
| Seirei Tenka ~Se o Hayami Iwa Nise Kakaru Takigawa no Waretemo Sue ni~ | 2023-08-09 | - |
| Seirei Tenka ~Kimi to Koso Haru Kuru Koto mo Mata Shika~ | 2020-04-15 | - |
| Seirei Kishi Aqueal Reizoku no Hanayome | 2008-08-29 | 6.80 (5) |
| Seirei Gari | 1989-12-08 | 5.80 (21) |
| Seirei Choukoushi | 2022-09-09 | - |
| Seinyuu no Miko Onee-chan Ruri ~Iyashi no Bonyuu de Nakadashi Seikatsu~ | 2010-07-30 | 6.10 (14) |
| Seinarukana Special Fan Disc | 2008-07-25 | 7.10 (21) |
| Seinarukana Gaiden - Seirei Tenshou ~Kowareyuku Sekai no Shoujo-tachi~ | 2010-01-29 | 6.90 (45) |
| Seinarukana Gaiden - Seirei Tenshou ~Crystal Friends~ | 2010-10-29 | 6.90 (19) |
| Seinarukana -The Spirit of Eternity Sword 2- | 2007-08-03 | 7.60 (609) |