Otokoyu Challenge Suru Ko
Reiwa Shasei Challenge
(SUPER24) [PureSlider (Matsuo)] MONTHLY THE IWATOVISION (Free!) [Chinese] [绅士仓库汉化]
[Takeya (Taketora Suzume)] Kuroshio Challenge (Kantai Collection -KanColle-) [Digital]
(C83) [Algolagnia (Mikoshiro Honnin)] Monthly Margareta Vol. 2 Event Henshuuban
[Algolagnia (Mikoshiro Honnin)] Monthly Margareta inaugural issue "Entrance Information" vol.000
(iDOL SURVIVAL2) ["Tsu" ga Mittsu. (Tsuttsu)] Akane Challenge!? (THE IDOLM@STER CINDERELLA GIRLS)
[Ohmi Takeshi] Gekkan Aikawa Henshuuchou - Monthly "Aikawa" The Chief Editor 1
[Mizu] Kids Challenge
Monthly Vitaman 2007-11
Kasen-chan no Jasen Rouraku Challenge
(Dramatic Change 3) [Ne. (Shiromitsu Daiya)] Challenge! Ochinchin Purupuruen ~3-nin nara Dekiru Mo~n~ (THE IDOLM@STER SideM)
[Kuon Michiyoshi] HUNDRED GAME Ch. 10 (Monthly Vitaman 2015-10) [Chinese] [樱翼汉化组]
Renzoku Kyousha Challenge
[Tenchuugumi] Queen Sayoko's Challenge (Ah! My Goddess!) English
[Karma Tatsurou] Reikan | Ghost Sense (Monthly Vitaman 2013-05) [English] {UsagiTrans}
[Nekomata Naomi] Here Comes a New Challenger! (COMIC Kairakuten Beast 2007-04) [English] [Clearly Guilty Translations]
[Bochi Bochi no Ki (Borusiti)] Kasen-chan no Jasen Rouraku Challenge (Touhou Project) [Digital]
[Usakun] Kongetsu no Wanko. | This Month's Doggy (Hatsukoi! Lyrical H) [English] [Digital]
Kodomo Challenge 2
[The Monthly Istanbul (Ahugan Sugita)] Kasshoku Oneesan no Fudeoroshi Ver. 3 [Chinese] [cqxl自己汉化] [Digital]
Monthly Vitaman 2016-09
Akane-chan Challenge! | 아카네짱 챌린지!
(iDOL SURVIVAL2) ["Tsu" ga Mittsu. (Tsuttsu)] Akane Challenge!? (THE IDOLM@STER CINDERELLA GIRLS) [Chinese] [无毒汉化组]
Double Up Challenge!
Monthly Vitaman 2013-04
[deadflow] Ui (Kukagetsu) | Ui (Eight months pregnant) (Blue Aka-chan IN-bu) (Blue Archive) [Chinese] [Digital]
Osananajimi-chan Ikase Challenge
To wa yoku ifu monode
Tanpan Kozou no Oppai Gym Challenge!
(C56) [M² Company (CJ Michalski, Souya Himawari)] Hachimitsu MONTH (Detective Conan)
[Jyoka] Igyou Kaikitan Mannequin (Monthly QooPA 2015-06)
[Kurokoshi You] Challenge Week (COMIC Megastore 2010-07) [English] {doujin-moe.us}
Pancakes Challenge | Desafío de Panqueques
[Taikan Kyohougumi (Azusa Norihee)] Sakura-chan to Oshigoto Challenge - Ona-Hole Challenge with Sakura (Cardcaptor Sakura) [English] [Digital]
[The Monthly Istanbul (Ahugan Sugita)] Kasshoku Oneesan no Fudeoroshi Ver.4.1 [English] [wehasband]
[Sakura Garden (Shirosuzu)] Chaldea Outdoor Challenge Abby-chan to Issho 2 (Fate/Grand Order) [Chinese] [靴下汉化组] [Digital]
[The Monthly Istanbul (Ahugan Sugita)] Kasshoku Onee-san no Fudeoroshi Ver. 7 [Chinese] [cqxl自己汉化] [Digital]
Monthly Vitaman 2018-07
I-401 Breeding recording + Monthly social gatherings between male and female submarines
Futanari Milk Challenge 4 | 扶她榨乳挑战 4
[ViperXTR] I Challenge You! (Kono Subarashii Sekai ni Syukufuku o!) [English]
[Abubu] Iemoto Challenge Series - Jinrui Hasshou no Chi de Mikai no Buzoku to Bunka Kouryuu Isshuukan (Girls und Panzer) [Chinese] [不咕鸟汉化组]
(C77) [Kyuu (Shooya Akira)] Futtou Challenge (Sora no Manimani)
[Karma Tatsurou] Cacaosu (Monthly Vitaman 2013-03) [English] [UsagiTrans]
Something unbelievable happened when I stopped time for 1 month and violated a 42 year old hikikomori woman
[Kikkaya (Uesugi Kyoushirou)] Haruka Challenge [English] [Scansforhumanity]
Monthly QooPA 2014-08
[Kon-Kit] Kaya-nee Volleyball ni Idomu | Ane☆Volleyball Challenge (Bishoujo Kakumei KIWAME Road 2012-12 Vol. 4) [English] [Malone] [Digital]
[Ohmi Takeshi] Gekkan Aikawa Henshuuchou - Monthly "Aikawa" The Chief Editor 1 [English] [redCoMet]
Challenge Days
Kagi Kyacchi Charenji | Key Catch Challenge
[The Monthly Istanbul (Ahugan Sugita)] Kasshoku Oneesan no Fudeoroshi Ver. 4 [Chinese] [cqxl自己汉化] [Digital]
Planning AV: One towel men's bath challenge in St. Louis and Honolulu
Monthly Gekiman Special 2012-11 [Incomplete]
Okusama Challenge - Challenge of Wife
[Kuon Michiyoshi] HUNDRED GAME Ch. 8 (Monthly Vitaman 2015-07) [Chinese] [樱翼汉化组]
(C94) [ANDOROGYNOUS (Kiyose Kaoru)] Futanari Milk Challenge 4
Bodyswap between a monther and her son
(SUPER24) [PureSlider (Matsuo)] MONTHLY THE IWATOVISION (Free!) [English] [ichigo-day]
Rika no Oshiri Challenge
(C91) [Molossan (Morochin-san)] DokiDoki Mesuiki! Challenge!! (Various) [English] [TF translations]
[Rald] Geneki Super Idol Ikaseai Challenge! Clear de 100-man Yen! Shippai Suru to AV Debut!? (Shadowverse) [Chinese] [世界树个人汉化]
Monthly Vitaman 2009-09
Chiisana Yuusha ga Teki Onna Kanbu ni Tatakai o Idomi Eroi Koto Sareru Hon | The Tiny Hero Challenges The Enemy's Female Leader To A Battle And Gets Some Lewd Shit Done To Him!
(C86) [Yamakawa Den'enfuukei (Yamada, Kawada)] HERE COMES A NEW CHALLENGER!! (High Score Girl) [English] [FEPO]
Nanjamo to Ura Gym Challenge!!
[Satuyo] Pool de Challenge! Boyish (COMIC LO 2017-12) [Chinese] [code183汉化] [Digital]
Dairoku! Otoile Challenge2
(C91) [Molossan (Morochin-san)] DokiDoki Mesuiki! Challenge!! (Various)
Yuusha no Sairoku Hon Challenge
[Utsutenkai (Shirizou)] Katabutsu Iinchou to NTR Play ni Challenge Suru Hon / Book About A Tightly Wound School Council President Challenging Herself To Do Some NTR Play [English] {Doujins.com}
[Sakura Garden (Shirosuzu)] Chaldea Outdoor Challenge Abby-chan to Issho 3 (Fate/Grand Order) [Digital]
Maki Nico Lez Challenge
[Senbon Torii] FallenXXangeL The Last Stage 1 FULLCOLOR (Injuu Seisen Twin Angels) [Digital]