(Brain Breaker 4) [QUATTRO (Ikanatu)] Seijunha Idol no Oshigoto! (Dramatical Murder)
(Stand Up! 12) [Gum Tape Type (Nauchi)] Quatre Knights no Aichi-sama Jijou (Cardfight!! Vanguard)
Beit no Aima ni Miporin to Ecchi Suru Hon
[Hari Senbon] Nadeshiko-chan Full Color Doujinshi Zen 15 Page (Yuru Camp)
[EDEN ISLAND (EIDEN)] GG QUATRE "CAT DANCE"
[Zukiki] Iede Musume Hiroimashita
Equation of the Night 8 - Awakening Night
[Hiyoshi Hana] Equation of Mystery and Love (COMIC X-EROS #17) [English]
(C73) [Unagi no Nedoko (Nakano)] Treinta y quatro (Bleach)
They Say That the Kanji for Person Also Means Two Persons Supporting Each Other!!
[Pink Rose (Nekoya Marble, Takahashi Kanako)] Isoganakya Taberarechau (Gundam Wing) [English] [Tigoris]
[Pink Rose (Nekoya Marble, Takahashi Kanako)] Isoganakya Taberarechau (Gundam Wing)
Quattro Lovers
[Shioji] Uragiri no Hate ni... ~Hamerare Netorare Ochite Iku~
[Hiyoshi Hana] Chigiri to Musubi no Houteishiki - Equation of Chigiri & Musubi [Digital]
[ITOYOKO] Kichiku Houteishiki - Equation of brutal person
[Hiyoshi Hana] Chigiri to Musubi no Houteishiki - Equation of Chigiri & Musubi [Chinese] [無邪気漢化組]
Quatre Quartz
[Akuochisukii Sensei] Akuochisukii Sensei no Heroine Haiboku no Houteishiki - Equation of Heroine's defeat by Mr. Akuochisukii | 女性角色敗北的方程式 [Chinese]
噁心色鬼!2
[Hiyoshi Hana] Chigiri to Musubi no Houteishiki - Equation of Chigiri & Musubi
Yaribe Yano Oyako ch.1
667
(C93) [Acchi-kei Bishoujo (Iritate Shougun)] Seinenban Iku to Iruka-san Otomodachi mo Issho Hen (Kantai Collection -KanColle-)
Equation of the Night 6 - Singing Night
The Equation Of The Immoral - CH11
[Kitagawa Mizuki] Love Moe Equation
The Equation Of The Immoral - CH10
[Eden Island] (Eiden) GG Quatre vol. 3
(Panzer Vor! 10) [BlueMage (Aoi Manabu)] Yoru no Nishizumi-ryuu Ni (Girls und Panzer)
[Harumi Chihiro] Aquatic Angel (One Piece) [English]
[Kawamoto Yoshiki] Puni-puni Equation
(C65) [Rio Grande (Mitsui Mana)] Quatre Saisons (Original)
[Ponet (Pon)] Uchikina Anaru [Digital]
(C73) [Unagi no Nedoko (Nakano)] Treinta y quatro (Bleach)
[Hiyoshi Hana] Kare to Imouto no Houteishiki | The Equation of Him and His Little Sister (COMIC Megastore 2012-08) [English] [The Lusty Lady Project]
[Plumeria (Shiosai Reach)] Mamo no Taiji | Demon Embryo (Seiken Densetsu 3) [English] [SaHa] [Incomplete]
(C69) [Taishita Shoten (Taishita Monda)] Mireba Wakaru desho (Neon Genesis Evangelion)
[Azuki Kurenai] Midara no Houteishiki - The equation of the Immoral Ch. 9 [English] [SaHa]
Equation of Mystery and Love
Quattro Lovers
[AMP (Norakuro Nero)] Notorious Little Twins (Onegai Twins)
[Azuki Kurenai] Yoru no Houteishiki 1 | Equation of the Night 1
The Equation Of The Immoral - CH13
The Equation Of The Immoral - CH12
(Angel Time 6) [NIGHT FUCKERS (Mitsugi)] x3 Angels (Kaitou Tenshi Twin Angel)
[Global One (MARO)] Sadistic - Tenkuu no Shou - (Various)
Equation of the Night 2 - The Night is Fragrant
Fortune Lovers | Schicksalhafte Liebe
(Junction Box Nagoya 2) [Chocolate Synapse (Shika Yuno)] Boku no Kanojo o Shoukai Shimasu (Hinabita) [English]
Equation of the Night 5 - To Meet At Night