(Puniket 12) [PASTEL WING (Kisaragi-MIC)] Koniro no Ehon -Sukumizu Quartet- (ToHeart 2)
(Quartet Score 4) [Inukare (Inuyashiki)] Mairasu Complex (Uta no Prince-sama)
Ero Sister 3 - My Personal Angel
Fushidara Biyori
TURN UP!
(C97) [Rurunoya (Rurukichi)] Isekaru Biyori (Isekai Quartet) [English] [EHCOVE]
Nayamashi Quartet 1 & 2 Full Color Soushuuhen
(C91) [Horizontal World (Kinnotama)] Momoiro Quartet 2 (THE IDOLM@STER CINDERELLA GIRLS) [Chinese] [绅士仓库汉化]
Clover Quartet Lolic!
Momoiro Quartet 2+
[FreeStyleQuartet (Kuusou)] Kimi Tono Kyori
(C92) [Yuunabe Shinkouchuu (Tanabe Kyou)] Loli Quartet (Bakemonogatari) [English] [Brolen]
(C90) [Horizontal World (Kinnotama)] Momoiro Quartet (THE IDOLM@STER CINDERELLA GIRLS) [Chinese] [魔狗狗个人汉化]
[OOPARTS (Tori)] GERMAN DOG (Axis Powers Hetalia)
(C77) [DA HOOTCH (ShindoL)] Hanshoku Nebura (Monster Hunter)
Momoiro Quartet 4 ever
(C78) [Hikakuteki Simple na Panty (Imonade Ryouchou)] Nayamashi Quartet 1 & 2 Full Color Soushuuhen (Seto no Hanayome) [English]
[STAPSPATS/背水の陣/芋。/発光きむち] Pocket Quartet (pokemon) [Digital]
[Suzupony (Suzunomoku)] Naruko The Quartetto (Alice Gear Aegis) [Digital]
Love Quartet
Nayamashi Quartette
(C78) [Mebius no Wa (Nyx)] Bokoro Quartet 3 (VOCALOID)
(C91) [Avalanche (ChimaQ)] Baquartet to Otona no Omamagoto! (Touhou Project) [Chinese] [oo君個人漢化]
(C86) [FreeStyleQuartet (Kuusou)] Ari To Kirigirisu
(SUPER25) [Maibotsu (Akitani)] Masshiro no Hakoniwa (Owari no Seraph)