| Sei Jeremiah Gakuen | 1993-12-22 | - |
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| Sei Kishi Mamoru 2 | 2021-01-16 | - |
| Sei Kishi Reia ~Mamono ni Torawareta Onna Kishi~ | 2013-10-05 | - (4) |
| Sei Luminous Gakuen Koufuusai Soudouki | 2009-02-26 | - |
| Sei Maries Gakuen ~Ikasete! Onee-sama~ | 2004-07-23 | - (4) |
| Sei Monmusu Festival!! ~Omatsuri da yo Zen'in Shuugou!~ | 2014-02-28 | 7.20 (30) |
| Sei Monmusu Gakuen | 2012-08-24 | 7.50 (129) |
| Sei Naru Yoru no Futari | 2014-12-24 | - |
| Sei Oukoku Foria ~Mawaru Toki - Sokubakusareta Tamashii~ -Ouhi Hen- | 2012-08-12 | - |
| Sei Reijou Wakako | 2012-06-29 | 6.80 (47) |
| Sei Replica | 2001-10-29 | - |
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| Sei Shoujo Kishi | 2009-06-26 | - |
| Sei Shoujo Sentai Lakers | 1993-12-25 | 5.30 (15) |
| Sei Shoujo Sentai Lakers II | 1994-12-16 | 6.10 (6) |
| Sei Shoujo Sentai Lakers III | 1996-04-26 | - (4) |
| Sei Shoujo ni Fumaretai | 2009-09-21 | - |
| Sei Shoujo ~Seido Ikusei Gakuen~ | 2013-07-26 | 7.50 (213) |
| Sei Shugo Senshi Liatris | 2007-12-31 | - (1) |
| Sei Valentine's no Hi -Der Kuss- | 2014-03-02 | - (1) |
| Sei Yariman Gakuen Enkou Nikki | 2011-12-22 | 6.80 (127) |
| Sei Yariman Gakuen Pakopako Nikki 2021 | 2021-12-24 | 7.00 (268) |
| Sei Yariman Sisters ♥ Pakopako Nikki | 2013-12-06 | 6.50 (106) |
| Sei no Shoujo - Bishoujo Gakuen 3 - | 2021-03-26 | 7.20 (32) |
| Sei to Shi no Ana | 2009-05-24 | - |
| Seiai Gakuen Fechika | 2005-02-25 | 6.20 (841) |
| Seibetsu smoothie | 2024-08-25 | - |
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| Seibogari | 2021-11-26 | 6.90 (5) |
| Seichou Nikki ~Onii-chan to Yobasetai!~ | 2003-10-31 | - (1) |
| Seido Choukyou Shidoushitsu ~Hentai Kousoku Curriculum~ | 2008-03-21 | 7.20 (28) |
| Seido Gakuensai ~Nikuyoku ni Oboreru Onna Kyoushi-tachi~ | 2006-10-20 | 6.20 (5) |
| Seido Koukan Shidou ~Toaru Gakuenchou no Yokubougeki~ | 2010-02-19 | 5.50 (15) |
| Seido Maria ~Hakudaku Mamire no Zangeshitsu~ | 2004-07-09 | 6.80 (13) |
| Seidorei Shiiku Manual | 2005-12-09 | - |
| Seidorei “Misato” ~Joshi ○gakusei Kankin Rape~ | 2020-01-25 | 5.60 (12) |
| Seidou Kishi to Jindai Iseki Inmu Kyuuetsu Hen | 2017-12-31 | - |
| Seidou no Alice | 2019-08-31 | - (3) |
| Seieki Sakushu ☆ Loli Bitch | 2013-02-06 | 6.20 (13) |
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| Seieki Tairyou Chuunyuu! 5 ~Ore no Takabisha na Bishoujo Goshujin-sama ga Konna ni Seidai ni Aheru Wake ga Nai!?~ | 2011-04-08 | 6.60 (23) |
| Seieki Tairyou Chuunyuu! ~Ore no Kodane wa Biyaku Iri~ | 2008-11-12 | 6.00 (30) |
| Seien Tenshi Eleanor | 2007-06-29 | 6.30 (9) |
| Seifuku Chikan Ryoujoku ~Cosplay Rape Kyoku~ | 2005-03-12 | - |
| Seifuku Gekisha | 2007-10-12 | 5.00 (32) |
| Seifuku Kanojo | 2024-02-22 | 6.40 (60) |
| Seifuku Kanojo 2 | 2025-01-23 | 6.60 (19) |
| Seifuku Kanojo 2.5 | 2025-08-28 | 6.70 (10) |