Monthly Vitaman 2009-08
Naisho no Enkou Challenge | 不可告人的援交挑战
Kaye-nee Challenging Herself in Volleyball
Kuroshio Challenge
Challenge Days
(C93) [Unagiyasan (Hanamiya Natsuka)] Otona Challenge!! [Chinese] [脸肿汉化组]
Ero Trap Dungeon no Challenger
[hal] Hoozuki Miyoko Keiki 5-nen 6-kagetsu | Hoozuki Miyoko Sentence Five years, Six months (Mesu Ana Muhou Chitai -Mondou Muyou no Nakadashi Choueki-) [English] [CGrascal]
Monthly 'Aikawa' The Chief Editor Chp. 1
Monthly 'Aikawa' The Chief Editor Chp. 7
Kanoka Challenge_plot 2
[Yurikawa] Futago Challenge | Twin Challenge (Toshiue Kanojo Alternative) [English] [PSYN+DMD]
Akatsuki no Oyome-san Challenge | Akatsuki's Bride Challenge
Yuusha no Sairoku Hon Challenge
Monthly Vitaman 2014-09
(C86) [Yamakawa Den'enfuukei (Yamada, Kawada)] HERE COMES A NEW CHALLENGER!! (High Score Girl) [English] [FEPO]
Monthly UriboZakkaTen Dec.13,2019
Shizuku Challenge! Takumin Hitsuji-san no Chichishibori! RX