(CT13) [Hikakuteki Simple na Panty (Imonade Ryouchou)] Nayamashi Quartet 2 Rinkan Hen (Seto no Hanayome)
(C91) [Horizontal World (Kinnotama)] Momoiro Quartet 2 (THE IDOLM@STER CINDERELLA GIRLS)
Euphobian no Hibiki Quartet - Euphobian will resound.
Loli Quartet
(C95) [Horizontal World (Matanonki)] Momoiro Quartet x Quartet (THE IDOLM@STER CINDERELLA GIRLS)
(C91) [Avalanche (ChimaQ)] Baquartet to Otona no Omamagoto! | 和笨蛋四人组玩成人的过家家游戏! (Touhou Project) [Chinese] [Kanade汉化组]
(C94) [Horizontal World (Matanonki)] Momoiro Quartet 4.5 (THE IDOLM@STER CINDERELLA GIRLS) [Chinese] [绅士仓库汉化]
(Quartet Score 4) [Inukare (Inuyashiki)] Mairasu Complex (Uta no Prince-sama)
[Suzupony (Suzunomoku)] Naruko The Quartetto (Alice Gear Aegis) [Digital]
Momoiro Quartet x Quartet
(CT13) [Hikakuteki Simple na Panty (Imonade Ryouchou)] Nayamashi Quartet 2 Rinkan Hen (Seto no Hanayome) [English] {CGRascal}
Uniorythm Quartett Visual Fanbook [Incomplete]
Nayamashi Quartet 3 Cosplay Hen
(C91) [Horizontal World (Kinnotama)] Momoiro Quartet 2 (THE IDOLM@STER CINDERELLA GIRLS) [Chinese] [绅士仓库汉化]
Ane Yome Quartet Kanzenban
[FreeStyleQuartet (Kuusou, Schran)] Kadan no Himitsu
(C87) [FreeStyleQuartet (Kuusou, Schran)] Seiai Hosyuu Zyugyou
(CT12) [Hikakuteki Simple na Panty (Ouse Tsukusu)] Nayamashi Quartet (Seto no Hanayome) [Decensored]
(C91) [Horizontal World (Kinnotama)] Momoiro Quartet 2 (THE IDOLM@STER CINDERELLA GIRLS) [Chinese] [魔狗狗个人汉化]
(C66) [Akai Marlboro (Aka Marl)] Yuni-san to Mei-tan to
[Divine Fountain (Koizumi Hitsuji)] Marugoto Baquartet (Touhou Project) [Digital]
(CT13) [Hikakuteki Simple na Panty (Ouse Tsukusu)] Nayamashi Quartet 2 Rinkan Hen (Seto no Hanayome) [English] [CGrascal] [Decensored]
(C94) [Horizontal World (Matanonki)] Momoiro Quartet 4.5 (THE IDOLM@STER CINDERELLA GIRLS)
[Stapspats (Various)] Pocket Quartet (Pokémon X and Y) [English] [Doujins.com] [Digital]
[FreeStyleQuartet (Kuusou, Schran)] Boku no chiisana Oyomesan
Love Quartet
Momoiro Quartet 4 ever | 복숭아 빛 콰르텟 4 ever
(C92) [Opaque (Futou Ryouko)] Cinderella Assort vol. 5 ~Sayonara Magiquartet! Niji ga Kieta Hi~ (THE IDOLM@STER CINDERELLA GIRLS)
Baquartet Joukyou Fumei
(C90) [Horizontal World (Kinnotama)] Momoiro Quartet (THE IDOLM@STER CINDERELLA GIRLS) [Chinese] [绅士仓库汉化]
(C87) [Aozora Shoujo (Shirane Taito)] LOLI QUARTETT! (THE IDOLM@STER)
(C95) [Horizontal World (Matanonki)] Momoiro Quartet 2.5 (THE IDOLM@STER CINDERELLA GIRLS) [English] [MegaFagget]
(C78) [Mebius no Wa (Nyx)] Bokoro Quartet 3 (VOCALOID)
[STAPSPATS/背水の陣/芋。/発光きむち] Pocket Quartet (pokemon) [Digital]
(C97) [Rurunoya (Rurukichi)] Isekaru Biyori (Isekai Quartet) [English] [EHCOVE]
(C86) [FreeStyleQuartet (Kuusou)] Ari To Kirigirisu
(C93) [Horizontal World (Matanonki)] Momoiro Quartet 4 ever (THE IDOLM@STER CINDERELLA GIRLS) [Chinese] [绅士仓库汉化组]
(Quartet Score 5) [@s (akir@)] Change! (Uta no Prince-sama)
(C92) [Horizontal World (Matanonki)] Momoiro Quartet 3 TRIbute (THE IDOLM@STER CINDERELLA GIRLS) [Chinese] [绅士仓库汉化]
(C76) [Hikakuteki Simple na Panty (Ouse Tsukusu)] Nayamashi Quartet 3 Cosplay Hen (Seto no Hanayome) [English]
Bokoro Quartet 3
(C87) [Aozora Shoujo (Shirane Taito)] LOLI QUARTETT! (THE IDOLM@STER) [Chinese] [脸肿汉化组]
[Hikakuteki Simple na Panty (Ouse Tsukusu)] Nayamashi Quartet 2 Rinkan Hen(Seto no Hanayome) [Decensored]
Nayamashi Quartet 3
[Coffee Chazuke (Genjirou)] Baquartet Joukyou Fumei (Touhou Project) [Digital] [English] [hardcase8translates]
Baquartet to Otona no Omamagoto! | Playing Grown-Up with the Idiot Four!
Pocket Quartet
(C78) [Hikakuteki Simple na Panty (Imonade Ryouchou)] Nayamashi Quartet 1 & 2 Full Color Soushuuhen (Seto no Hanayome)
(C93) [Bijutsubu (Shiduki Michiru)] Euphobian no Hibiki Quartet - Euphobian will resound. (Hibike! Euphonium)
(CT12) [Hikakuteki Simple na Panty (Ouse Tsukusu)] Nayamashi Quartet (Seto no Hanayome) [English] [Decensored]
(C92) [Yuunabe Shinkouchuu (Tanabe Kyou)] Loli Quartet (Bakemonogatari) [English] [Brolen]
(C92) [Horizontal World (Matanonki)] Momoiro Quartet 3 TRIbute | Peach Colored Quartet 3 TRIbute (THE IDOLM@STER CINDERELLA GIRLS) [English] [ATF]
(C97) [Rurunoya (Rurukichi)] Isekairu Biyori (Isekai Quartet) [English] [TheCrappyTranslators]
(Quartet ☆ Score ♪ 6) [Ayu 30% Hiku (Kuma)] Embrasse Moi (Uta no Prince-sama)
(Puniket 12) [PASTEL WING (Kisaragi-MIC)] Koniro no Ehon -Sukumizu Quartet- (ToHeart 2)
Momoiro Quartet 3 TRIbute
(C91) [Horizontal World (Matanonki)] Momoiro Quartet 2+ | Peach Colored Quartet 2+ (THE IDOLM@STER CINDERELLA GIRLS) [English] [S.T.A.L.K.E.R.]
(C93) [Horizontal World (Matanonki)] Momoiro Quartet 4 ever (THE IDOLM@STER CINDERELLA GIRLS)
(C90) [Horizontal World (Kinnotama)] Momoiro Quartet (THE IDOLM@STER CINDERELLA GIRLS)
(CT12) [Hikakuteki Simple na Panty (Ouse Tsukusu)] Nayamashi Quartet (Seto no Hanayome) [English] [CGRascal]
(Tokimeki Party Sensation Premium) [elf.k-ya (elf.k)] Kurumi Miracle Quartet (Kurumi Miracle)
(C87) [Gainamon (Natsu no Koucha)] Sakusei Quartet (Touhou Project)
(Quartet Score 4) [Inukare (Inuyashiki)] XXX ME (Uta no Prince-sama)
Momoiro Quartet 4 ever
Momoiro Quartet 2+
(C92) [Horizontal World (Matanonki)] Momoiro Quartet 3 TRIbute (THE IDOLM@STER CINDERELLA GIRLS)
(C85) [FreeStyleQuartet (Kuusou)] Gohoushi Okami To Wakasama To
Quartet Phantom
(C92) [Yuunabe Shinkouchuu (Tanabe Kyou)] Loli Quartet (Bakemonogatari) [Chinese] [萝莉援助汉化组]
Momoiro Quartet 4.5
Seductive Quartet Collection Full Color