(SC39) [Various (Various)] Hatena? Challenge! (Challenge First-Year-Student)
(C77) [Kyuu (Shooya Akira)] Futtou Challenge (Sora no Manimani)
Saimin Tengoku Challenge 04
(Kono Koe Todoke, Tsuki made mo Yon) [Milk Pudding (Jamcy)] Akane-chan Challenge! 3-kaime (VOICEROID)
(C85) [Wasuraruru Tegami (Binsen)] Elf Shimai no Chousen | The Elf Sisters' Challenge [English] [Mistvern]
(Utahime Teien 4) ["Tsu" ga Mittsu. (Tsuttsu)] Akane Challenge!? 2 (THE IDOLM@STER CINDERELLA GIRLS) [Chinese] [无毒汉化组]
(C93) [ANDOROGYNOUS (Kiyose Kaoru)] Futanari Milk Challenge 2 [English] {Hennojin}
One-shota Challenge
[Sa-Ki] Honoka Challenge! (Love Live!)
Futanari Milk Challenge | 迫真水泳部・扶她的里技―第一章
(C86) [Marked-two (Hideo)] Taihou Challenge! (Kantai Collection -KanColle-)
Akatsuki no Oyome-san Challenge | Akatsuki's Bride Challenge
Futanari Milk Challenge 4 | 扶她榨乳挑战 4
Namaiki Kuchikukan Wakarase Challenge | I'll Make You Understand Challenge
Futanari Milk Challenge 3 | 扶她榨乳挑战 3
Osananajimi-chan Ikase Challenge
(C88) [Shinobi-Rocket (Sasamashin)] Akatsuki Challenge! (Kantai Collection -KanColle-)
[Torimogura] Osananajimi-chan Ikase Challenge
[Gojarun no Ozashiki (Gojarun)] Nantaika Triad to Yukai na Nakama-tachi Ochinchin Challenge Hon (THE IDOLM@STER CINDERELLA GIRLS) [Digital]
Shimakaze-kun Challenge Shippai
[Gosaiji] Captain Saimin Icha Love Challenge (2D Comic Magazine Saimin Kyousei Wakan Ijirare Heroine Mesukoi Acme! Vol. 1) [Chinese] [村长个人汉化] [Digital]
Kodomo de Challenge 2
Tanpan Kozou no Oppai Challenge!
(C92) [Slime Kikaku (Kuriyuzu Kuryuu)] Akatsuki no Oyome-san Challenge (Kantai Collection -KanColle-) [Chinese] [脸肿汉化组]
[ANDOROGYNOUS (Kiyose Kaoru)] Futanari Milk Challenge 3 [English] {Hennojin} [Digital]
(C92) [Slime Kikaku (Kuriyuzu Kuryuu)] Akatsuki no Oyome-san Challenge (Kantai Collection -KanColle-)
Futanari Milk Challenge 2 | 迫真水泳部・扶她的里技―第二章
(C63) [Kodomo Challenge (various)] Mainiti-ga-Kodomo-no-hi
Jisatsu Challenge | 自殺挑戰
[Mikeke] ろり陵育 お漏らし編
Etorofu-gata Muchikko Kodomo Challenge
(C94) [Bizensiki Roroppu (Bizen)] Oshiri Ecchi Challenge (Hatoba Tsugu)[Chinese][夏姬霸汉化组·改]
(C86) [Yamakawa Den'enfuukei (Yamada, Kawada)] HERE COMES A NEW CHALLENGER!! (High Score Girl) [English] [FEPO]
(C94) [ANDOROGYNOUS (Kiyose Kaoru)] Futanari Milk Challenge 4 | [番外篇]——快感觉醒!便器化的先辈! [Chinese] [鬼迷日眼的莱科少校个人川话化]
[Nekomata Naomi] Here Comes a New Challenger! (COMIC Kairakuten Beast 2007-04) [English] [Clearly Guilty Translations]
Saimin Tengoku Challenge 06
Iemoto Challenge Series - Jinrui Hasshou no Chi de Mikai no Buzoku to Bunka Kouryuu Isshuukan
催眠天国 Challenge 03
(Motto Warunodesu... Ouji) [Sakura Garden (Shirosuzu)] Aisha Challenge 4 (Sennen Sensou Aigis)
[Tenchuugumi] Queen Sayoko's Challenge (Ah! My Goddess!) English
Yuusha no Sairoku Hon Challenge Omake Manga
[Mikeke] Hatena Manga - Semete Yacchae! (Challenge First-Year-Student)
Ko-Gil Challenge
[Kurokoshi You] Challenge Week (COMIC Megastore 2010-07) [English] {doujin-moe.us}
(iDOL SURVIVAL2) ["Tsu" ga Mittsu. (Tsuttsu)] Akane Challenge!? (THE IDOLM@STER CINDERELLA GIRLS)
Seieki Tamekomi Challenge
(C70) [Okinawa Taieki Gunjinkai (Yasunaga Kouichirou)] Futakoi Challenge (Futakoi Alternative)
Cute Jolyne Lewd Challenge + Extras
Challenge! Hentai Majo Rensei
[inari mochi] Swimsuit Challenge
(C93) [MeltdoWN COmet (Yukiu Con)] Kanade Challenge Kouhen
Futanari Milk Challenge 2 | 扶她榨乳挑战2
[Satuyo] Pool de Challenge! Boyish | Challenge at the Pool! Boyish (Peaceful Ecchi!) [English] [Doki Fansubs+Yosh]