Kyokon Shoujo Nyoudou Challenge!
[Irojikake Matome Blog (Kurokawa Otogi)] Renzoku Kyousha Challenge (Paizuri Senmon Zasshi "Zettai Chichi Kyousha" Vol 1) [English] {Stopittarpit}
Chaldea Outdoor Challenge Abby-chan to Issho
[Dokudenpa Jushintei (Kobucha)] Imasara Shampoo Bottle Challenge o Suru Suieibu Coach no Manga | 现在才来挑战洗发水罐子的游泳部教练的漫画 [Chinese] [同文城] [Digital]
Honoka Challenge! 2
Futanari Milk Challenge | 扶她榨乳挑战
Iemoto Challenge Series - Jinrui Hasshou no Chi de Mikai no Buzoku to Bunka Kouryuu Isshuukan
[Pyonchi Koubou (Pyonchi)] Dosukebe Muramatsuri 1 - Jigoku no Cli Zeme Mesugaki Taikyuu Renzoku Acme Challenge Hen
(C59) [Dish up, ONE COIN (Warabi Yuuzou)] Monthly Pace No. 2 (Street Fighter)
Kanoka Challenge_plot 2
[Fanbox] Kanzarin [Hentai of the month] (4012732)
Challenge Days
Junior Dominating Senior Challenge!
[Bochi Bochi no Ki (Borusiti)] Kasen-chan no Jasen Rouraku Challenge (Touhou Project)
Monthly UriboZakkaTen Jan.31,2020
[Kogasaki Yuina] JK Tamamo no Shuugaku Ryokou Oppai Challenge (Fate/Grand Order)
Monthly Vitaman 2014-09
TS-kko Otokoyu Challenge!
(C95) [Andorogynous (Kiyose Kaoru)] Futanari Milk Challenge 5
(C91) [Molossan (Morochin-san)] DokiDoki Mesuiki! Challenge!! (Various) [Chinese] [不協和音漢化]
(C64) [kodomo challenge (Various)] natsu no kansatsu nikki | Summer observation diary (Original) [English]
[kogasaki yuina] JK Mamamo No Shuugakuryokou Oppai Challenge | JK玉藻的畢業旅行ㄋㄟㄋㄟ大冒險 [Chinese] (Fate/Extra)[三色的大猩猩翻譯同盟]
[Nishina Satomi] Kyokan-kun to Kogara-chan Shinchousa 43-centi de SEX Challenge - Giant and a small lady.
Monthly Vitaman 2015-12
(C94) [Fuwatoro★Marinepolis (Sumitomo)] Theater Challenge (THE IDOLM@STER MILLION LIVE!)
(Kono Koe Todoke, Tsuki made mo Yon) [Milk Pudding (Jamcy)] Akane-chan Challenge! 3-kaime (VOICEROID)
Supervised Monthly Ejaculation
Seieki Tamekomi Challenge
[Fujisaka Kuuki] Koi Kano x Ai Kano Ch. 24 (Monthly Vitaman 2015-04) [Chinese] [樱翼汉化组]
[ANDOROGYNOUS (Kiyose Kaoru)] Futanari Milk Challenge 3 [English] {Hennojin} [Digital]
Yuusha no Sairokubon Challenge
(Gunreibu Shuho & Houraigekisen! Yo-i! Goudou Enshuu 4Senme) [Renai Mangaka (Naruse Hirofumi)] Kashima-san to Akimatsuri Challenge (Kantai Collection -KanColle-)
[The Monthly Istanbul (Ahugan Sugita)] Kasshoku Oneesan no Fudeoroshi Ver. 5
Futanari Milk Challenge 2 | 扶她榨乳挑战2
[ANDOROGYNOUS (Kiyose Kaoru)] Futanari Milk Challenge 5 [Digital]
i-ll-make-you-understand-challenge
[zen9] Okusama Challenge - Challenge of Wife
[Mizu] Kids Challenge
(C92) [K+W (Sasachinn)] Hatsuzuki to Muremure Muramura Natsu Ecchi! | Having Stuffy Sex On The First Month Of Summer! (Kantai Collection -KanColle-) [English] [Doujins.com]
[Niliu Chahui] Male Swimsuit Challenge [English]
(Utahime Teien 4) ["Tsu" ga Mittsu. (Tsuttsu)] Akane Challenge!? 2 (THE IDOLM@STER CINDERELLA GIRLS) [Chinese] [无毒汉化组]
One-shota Challenge
(C77) [Kyuu (Shooya Akira)] Futtou Challenge (Sora no Manimani)
(C95) [Taikan Kyohougumi (Azusa Norihee)] Sakura-chan to Oshigoto Challenge - Ona-Hole Challenge with Sakura (Cardcaptor Sakura)
Monthly Vitaman 2008-11
(C86) [Yamakawa Den'enfuukei (Yamada, Kawada)] HERE COMES A NEW CHALLENGER!! (High Score Girl) [English] [FEPO]
#SoniCha Ikuiku Challenge
[Kikkaya (Uesugi Kyoushirou)] Haruka Challenge
Monthly Vitaman 2016-07
Twin Challenge ch. 1
[Terujirou] Junior Dominating Senior Challenge!
Monthly Vitaman 2006-09
Monthly Vitaman 2015-11 [Digital]
(C97) [DECOPPACHI (Hidiri Rei)] DT Chinpo 100-pon Acme Challenge!! (Kiratto Pri Chan)
Imasara Shampoo Bottle Challenge o Suru Suieibu Coach no Manga
[Usakun] Kongetsu no Wanko. | This Month's Doggy. (COMIC LO 2007-05) [English] [sirC]
DokiDoki Mesuiki! Challenge!!
[Karma Tatsurou] Reikan | Ghost Sense (Monthly Vitaman 2013-05) [English] {UsagiTrans}
Monthly MelomELO Feb.25,2013
(C83) [Algolagnia (Mikoshiro Honnin)] Monthly Margareta Vol. 1 Event Henshuuban
Toka 1 hour drawing challenge (ichizikann)
Girls from a Prestigious School Challenged to an Escape Game
[DIN] Seieki Tamekomi Challenge | Semen Storage Challenge [English]
Kasshoku Oneesan no Fudeoroshi Ver. 4
Six Fanarts Challenge NSFW Pack
(C56) [M² Company (CJ Michalski, Souya Himawari)] Hachimitsu MONTH (Detective Conan)
(C92) [Slime Kikaku (Kuriyuzu Kuryuu)] Akatsuki no Oyome-san Challenge (Kantai Collection -KanColle-) [Chinese] [脸肿汉化组]
[The Monthly Istanbul (Ahugan Sugita)] Bikyaku Zukan (Various) [Digital]
Pancakes Challenge | Desafío de Panqueques
Monthly Vitaman 2015-11
Ma Yumiko (jotaika) hon sanpuru Monthly Girls' Nozaki-kun sample
Monthly Vitaman 2014-03
(C64) [kodomo challenge (Various)] Natsu no Kansatsu Nikki
(C90) [Akausagi (Fukuyama Naoto)] 100 challenge (Hundred)
[Professor Grace (Grace Ishikawa)] Brain Training (From: COMIC Monthly Vitaman 2006-10) [ENG] =TV=
[Fujisaka Kuuki] Koi Kano x Ai Kano Ch. 21 (Monthly Vitaman 2014-12) [Chinese] [樱翼汉化组]
Monthly Vitaman 2016-08
Monthly 'Aikawa' The Chief Editor Chp. 1
(C95) [Taikan Kyohougumi (Azusa Norihee)] Sakura-chan to Oshigoto Challenge - Ona-Hole Challenge with Sakura (Cardcaptor Sakura) [English] [biribiri]
[Karma Tatsuro] Shiawase no Shoujo (Monthly Vitaman 2014-01) [English] [Facedesk]
You Are Challenged by Kogal Takuha | La Sfida
Kasshoku Oneesan no Fudeoroshi Ver.4.1
[Algolagnia (Mikoshiro Honnin)] Monthly Margareta inaugural issue "Entrance Information" vol.000
[The Monthly Istanbul (Ahugan Sugita)] Kasshoku Onee-san no Fudeoroshi Ver. 7 - Brown Lady Takes His First Time Ver. 7 [English] [Decensored] [Digital]
[Fukuyama Naoto] Saimin Tengoku Challenge 03 (COMIC BAVEL 2021-02) [Chinese] [零星汉化组] [Digital]
Monthly Vitaman 2016-10 [Digital]
[Mikeke] ろり陵育 お漏らし編
Kurokoshi You] Challenge Week
Monthly 'Aikawa' The Chief Editor Chp. 3
[The Monthly Istanbul (Ahugan Sugita)] Shotagari Witch [English] [q91] [Digital]
Monthly Gekiman Special 2012-11 [Incomplete]
Sex Challengers
Ko-Gil Challenge
(C94) [Bizensiki Roroppu (Bizen)] Oshiri Ecchi Challenge (Hatoba Tsugu)[Chinese][夏姬霸汉化组]
Futanari Milk Challenge 3
Monthly QooPA 2013-10
Monthly Vitaman 2015-05
[Akinao] Kasumi to Ren-nii-chan (Monthly Vitaman 2016-06) [English] {NecroManCr}
[The Monthly Istanbul (Ahugan Sugita)] Kasshoku Oneesan no Fudeoroshi Ver. 6
[ViperXTR] I Challenge You! (Kono Subarashii Sekai ni Syukufuku o!) [English]