[Momonga Club (Hayashibara Hikari)] Shoujo no Houteishiki - Girls of Equation [Digital]
[Hiyoshi Hana] Kare to Imouto no Houteishiki | The Equation of Him and His Little Sister (COMIC Megastore 2012-08) [English] [The Lusty Lady Project]
(SC30) [Space Color (Ryuuko Ichiban)] stripy crunch (Suigetsu)
Equation of the Night 2 - The Night is Fragrant
[Scarlet Beriko] Minori no Te
[Jirou] Flow-kun (Pop'n Music)
Tsugainarai
[Gentsuki] Yasashiisa no Houteishiki - Tender equation (COMIC BAVEL 2017-08) [Chinese] [揮淚錦馬超漢化] [Digital]
(C74) [Momonga Club (Hayashibara Hikari)] Shoujo no Houteishiki - Girls of Equation
Quatre Quartz
The Equation Of The Immoral - EX CH
Mesu Kachou Jogeza Gaiden - Kuno Shizuka no Baai | Squatting She-Boss Spinoff: The Case of Shizuka Kuno
The Equation Of The Immoral - CH13
The Equation of Him and His Little Sister
(C90) [P'nK (Kaya)] Jittenshuu no Quatre ga Nakama ni Narimashita (Granblue Fantasy)
[Hiyoshi Hana] Equation of Mystery and Love (COMIC X-EROS #17) [English]
[Arachno☆Mania (Kumoemon)] Himegumo Kinbaku Emaki Ni (Touhou Project) [Digital]
(C46) [Munchen Graph (Kita Kaduki, Mach II)] Hara Hara Dokei Vol. 4 Quattro (Various)
Kinoko no Kami-sama | The Mushroom God
[Hiyoshi Hana] Chigiri to Musubi no Houteishiki - Equation of Chigiri & Musubi [Digital]
The Equation of the Maid and the Assistant
(C89) [HQ's (Kajiyama Hiroshi)] The Succubus Queen
Quatre Mains
667
LOVER'S DAY RIGHT HERE IN MY ARMS
[Burning Hammer(Fukui Sora)] パッピーマテリアル (Mahou Sensei Negima!)
Chou Original Dai Doujin Sai Gasshu En
Shoujo Zokusei - Girls attribute
Love Equation
[10.10MHz (Totofumi)] QuAttuor (DRAMAtical Murder)
Tama-nee 30-sai
[CatJellyFish (Vanadium)] Drip (THE IDOLM@STER CINDERELLA GIRLS) [Digital]
[TRIBO] MENISCUSCA QUATRA
Isoganakya Taberarechau
[Orange Peels (Ore P 1-gou)] Honto ni Chotto dake Kowai Youkai Otogibanashi -Akaname Hen- [Chinese] [無邪気漢化組] [Digital]
(C85) [Alice no Takarabako (Mizuryu Kei)] YARIMAN (ARIA) [English] [Chocolate + LWB]
Kaya-nee through a train window c01
Ochinpo Miko Anyaku
[Lefthand] The Bewildered Adventurer-chan is Caught and Reverse-Raped as the Penis She Grew Gets Aroused by the Female Demons [English] [q91]
[Zero no Odoriba (Tadano Yowaiko)] Dumme Taktiken (Yu-Gi-Oh! GX) [English] [Silver Lining]
Equation of the Night 4 - Noisy Night2
[Pink Rose (Nekoya Marble, Takahashi Kanako)] Isoganakya Taberarechau (Gundam Wing) [English] [Tigoris]
(Bokura no Love Live! 13) [liz project (Miyamoto Liz)] Kotori to Icha Love Ecchi (Love Live!)
Chigiri to Musubi no Houteishiki - Equation of Chigiri & Musubi
(C78) [Studio Katsudon (Main Manabe Jouji)] IMASARA Dirty Pair 2010 (Dirty Pair)
(SUPER21) [NEVER GIVE UP (Nekonattou)] Kanri Fujuubun | Inadequate Management (Uta no Prince-sama) [English] [Brolen]
[Azuki Kurenai] Yoru no Houteishiki 1 | Equation of the Night 1 [English] [Hentai-Enishi] [Decensored]
[Tsurikichi Doumei (Umedama Nabu)] Umedamangashuu ver,S (Various)
[Fuyuno Mikan] Petit Cawa [Chinese] [不知道谁汉化的反正字是我嵌的]
[Tenshikan (Fuuga Utsura)] Maihime 2 ~Rehearsal~ Kouun Ryuusui, Teigeki Sanjou, Butai Ura (Sakura Taisen)
[Azuki Kurenai] Midara no Houteishiki - The equation of the Immoral Ch. 1-2 [English] [hen-toy]
Her Equation
[Azuki Kurenai] Midara no Houteishiki - The equation of the Immoral Ch. 9 [English] [SaHa]
Punpy Dragon
Quattro Lovers
(Stand Up! 12) [Gum Tape Type (Nauchi)] Quatre Knights no Aichi-sama Jijou (Cardfight!! Vanguard)
(C72) [MILK STANDARD (Shin'ichi)] Le Quatrieme Courant (Mabinogi)
[Brough-Superior (Tsujisaki Sou)] Halloween Magic (ToHeart)
Homu Tokage
[Choco Pahe] Shain Ryokou, Mesu ni Natta Watashi [English] [Digital]
(Brain Breaker 4) [QUATTRO (Ikanatu)] Seijunha Idol no Oshigoto! (Dramatical Murder)
[TakamagaharaHouraku] Kimagure Kyousoukyoku - E' Corretto Un Capriccio (Growlanser)
[Kawamoto Yoshiki] Puni-puni Equation
[ITOYOKO] Kichiku Houteishiki - Equation of brutal person
The Equation of the Cat and Me
くすぐりクエスト~ミニ~
Equation of the Night 1 - Beast of the Night
Amaenbou Kareshi wa Kyuuketsuki
The Equation Of The Immoral - CH12