1 Month Challenge

(SC39) [Nounai Kanojo, Ningen Modoki, Tateyoko Hotchkiss, Kagi Node (various)] Hatena? Challenge! (Challenge First-Year-Student)

[Rapan (Himuro Shizuku)] Gekkan Duelist 11 - vol.03 | Monthly Duelist 11 - vol.3 (Yu-Gi-Oh! 5D's ) [English] [Utopia]

[Tomohiro Kai] HIDE AND PEEK (COMIC Kairakuten BEAST 2014-09) [English] [amaimono]

Yuusha no Sairokubon Challenge

Eroi Bunnyue ni Shasei Gaman Shoubu o Idomu. | Challenging the Lewd Bunny to a Cum Endurance Battle.

(C86) [Yamakawa Denenhuukei (Yamada, Kawada)] HERE COMES A NEW CHALLENGER!! (High Score Girl) [Chinese] [oo君x赤蜘蛛聯合漢化]

[hal] Kinugasa Minto Keiki 1-nen 6-kagetsu | Kinugasa Minto Sentence 18 Months (Mesu Ana Muhou Chitai Muyou no Chitsu-nai-dashi Choueki) [English]

Yuusha no Sairoku Hon Challenge

(C86) [Yamakawa Den'enfuukei (Yamada, Kawada)] HERE COMES A NEW CHALLENGER!! (High Score Girl) [English] [FEPO]

(C64) [kodomo challenge (Various)] natsu no kansatsu nikki | Summer observation diary (Original) [English]

MONTHLY THE IWATOVISION

(C93) [Aozora Shoujo (Shirane Taito)] Rika no Oshiri Challenge (THE IDOLM@STER CINDERELLA GIRLS) [Chinese]

Backstage Hibiki Challenge

(SUPER24) [PureSlider (Matsuo)] MONTHLY THE IWATOVISION (Free!) [English] [ichigo-day]

Dairoku! Otoile Challenge2

[Sakura Garden (Shirosuzu)] Chaldea Outdoor Challenge Abby-chan to Issho 2 (Fate/Grand Order) [Digital]

(C85) [Wasuraruru Tegami (Binsen)] Elf Shimai no Chousen | The Elf Sisters' Challenge [English] [Mistvern]

(Sennen Battle Phase 10) [ANNIELAURIE (Toyama Nanao)] Sex Challengers (Yu-Gi-Oh! ARC-V)

Monthly Vitaman 2014-11

[Mizone] Hito no Ashi yori Hebi no Ashi Miyo (Monthly QooPA 2014-09) [Digital]

Monthly Vitaman 2014-07

[Bochi Bochi no Ki (Borusiti)] Kasen-chan no Jasen Rouraku Challenge (Touhou Project) [Digital]

[Hanauna] Mahou Shoujo Yuusha-chan (Monthly QooPA 2014-08) [Chinese] [NPC中文化]

[zen9] Okusama Challenge - Challenge of Wife

(Futaba Gakuensai 8) [1000AP (Various)] Kodomo de Challenge 4 (Futaba Channel)

(C85) [Wasuraruru Tegami (Binsen)] Elf Shimai no Chousen | The Elf Sisters' Challenge [English] [Mistvern]

JC Chinpo-beya Ikkagetsu Seikatsu Challenge!

[The Monthly Istanbul (Ahugan Sugita)] Kasshoku Oneesan no Fudeoroshi Ver. 4 [English] [Decensored] [Copy Of] [Digital]

[Jyoka] Igyou Kaikitan Mannequin (Monthly QooPA 2015-06)

Monthly UriboZakkaTen Dec.13,2019

[Fukumaaya] Uiuishii Imouto | Naive Little Sister (Monthly QooPA 2014-08) [English] [Crystalium]

[The Monthly Istanbul (Ahugan Sugita)] Kasshoku Oneesan no Fudeoroshi Ver.4.1 [Chinese] [cqxl自己汉化]

[Corundum] A Challenger Has Appeared Which Naturally Leads To A Duel | Chousensha ga Arawareta - Shizen na Nagare de Kettou (Fate Grand Order) [English] [FMLTranslations]

Monthly Vitaman 2016-05

TS-kko Otokoyu Challenge!

[Fanbox] Kanzarin [Hentai of the month] (1776117)

Kanoka Challenge_plot 2

[Karma Tatsurou] Ochitama | Fallen Balls (Monthly Vitaman 2013-02) [English] [UsagiTrans]

Monthly MelomELO Nov.11,2012

[Hara] Misaki-chan no Lotion Challenge

(C94) [Minamono (Minamo)] Ko-Gil Challenge (Fate/Grand Order) [Chinese] [theoldestcat汉化]

Cute Jolyne Lewd Challenge + Extras

[laliberte] CHALLENGE [Chinese] [流木个人汉化]

Saimin Tengoku Challenge 06

Monthly Vitaman 2016-01

UnknownUnlockChallenge

UNKNOWN UNLOCK CHALLENGE | 크로스비츠 동인지

(SUPER24) [PureSlider (Matsuo)] MONTHLY THE IWATOVISION (Free!)

[Karma Tatsurou] Tsuyuki | Rainsnow (Monthly Vitaman 2014-08) [English] =TV=

i-ll-make-you-understand-challenge

(C92) [ANDOROGYNOUS (Kiyose Kaoru)] Futanari Milk Challenge [English] {Hennojin}

Mordred nipple Challenge | 莫德雷德乳首挑戰

(Dramatic Change 3) [Ne. (Shiromitsu Daiya)] Challenge! Ochinchin Purupuruen ~3-nin nara Dekiru Mo~n~ (THE IDOLM@STER SideM)

[kogasaki yuina] JK Mamamo No Shuugakuryokou Oppai Challenge | JK玉藻的畢業旅行ㄋㄟㄋㄟ大冒險 [Chinese] (Fate/Grand Order)[三色的大猩猩翻譯同盟]

Monthly Vitaman 2011-07 [Digital]

[Kuon Michiyoshi] HUNDRED GAME Ch. 9 (Monthly Vitaman 2015-09) [Chinese] [樱翼汉化组]

(C97) [Yuasa Rengou (Jean Louis)] Tanpan Kozou no Oppai Gym Challenge! (Pokémon Sword and Shield) [Chinese]

[MelonBooks] Monthly MelomELO Jun.2014

(C93) [Aozora Shoujo (Shirane Taito)] Rika no Oshiri Challenge (THE IDOLM@STER CINDERELLA GIRLS)

[Tenchuugumi] Queen Sayoko's Challenge (Ah! My Goddess!) English

[Kusatsu Terunyo] Homestay Ikkagetsume | 1st Month of Homestay (COMIC Purumelo 2008-11) [English] [desudesu]

[kogasaki yuina] JK Mamamo No Shuugakuryokou Oppai Challenge | JK玉藻的畢業旅行ㄋㄟㄋㄟ大冒險 [Chinese] (Fate/Grand Order)[三色的大猩猩翻譯同盟]

futanari milk challenge 5

Monthly 'Aikawa' The Chief Editor Chp. 4

[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]

Dairoku! Otoile Challenge 2

(C92) [Milk pudding (Jamcy)] Akane-chan Challenge! (VOICEROID)

Monthly Vitaman 2017-08 [Digital]

[inari mochi] Swimsuit Challenge

Iemoto Challenge Series - Jinrui Hasshou no Chi de Mikai no Buzoku to Bunka Kouryuu Isshuukan

(C93) [Milk pudding (Jamcy)] Akane-chan Challenge! 2-kaime (VOICEROID) [Chinese] [脸肿汉化组]

[Mikeke] ろり陵育　お漏らし編

[Ohmi Takeshi] Gekkan Aikawa Henshuuchou - Monthly "Aikawa" The Chief Editor 1

[Karma Tatsurou] Amasan (Monthly Vitaman 2013-04) [English] =LWB= [Colorized]

Monthly Vitaman 2016-04

[R2 (Rakko)] Yuusha no Chousenjou 3 Senshi ni Love Song o | Hero's Challenge 3 (Dragon Quest III) [English] =thetsuuyaku= [Digital]

Shimakaze-kun Challenge Shippai

Monthly Vitaman 2018-03

(C97) [Yusei Haguruma (Victanyas)] Namaiki Kuchikukan Wakarase Challenge | I'll Make You Understand Challenge (Azur Lane) [English] {Doujins.com}

[Takitomo Tsuguo] Lotion!? (Monthly Vitaman 2013-08) [Chinese] [最愛路易絲澪漢化組]

[ro] Ookami to Akazukin Ch. 2 (Monthly QooPA 2014-09) [Chinese] [E个人汉化] [Digital]

(Futaba Gakuensai 7) [1000AP (Various)] Kodomo de Challenge 3 (Futaba Channel)

[Karma Tatsurou] Irekawa (Monthly Vitaman 2011-07) [English] [Renaissance Da Vinci Translation] [Incomplete]

[Shigaoka Touki] Kekkon Suru Nara Mesuneko to | If It's Getting Married, a Catgirl... (Monthly Vitaman 2015-04) [English] [Krozam]

Pancakes Challenge | Desafío de Panqueques

(C91) [Molossan (Morochin-san)] DokiDoki Mesuiki! Challenge!! (Various) [English] [TF translations]

Monthly Vitaman 2013-05

[Karma Tatsuro] Shiawase no Shoujo (Monthly Vitaman 2014-01) [English] [Facedesk]

Monthly 'Aikawa' The Chief Editor Chp. 1

Saimin Tengoku Challenge 04

[mizu] Poka Poka After (Kids Challenge) [Chinese] [Befreiungsfuehrer第五次个人汉化]

Kyokon Shoujo Nyoudou Challenge!

Akane-chan Challenge! | 아카네짱 챌린지!

Monthly Gekiman Special 2013-06 [Incomplete]

Futanari Milk Challenge 2 | 扶她榨乳挑战2

Rika no Oshiri Challenge

[Momonosuke] Sex Communication (Monthly Vitaman 2017-01) [Chinese] [不負責任個人漢化]

Chaldea Outdoor Challenge Abby-chan to Issho

[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]

[Mikeke] Hatena Manga - Semete Yacchae! (Challenge First-Year-Student)

[The Monthly Istanbul (Ahugan Sugita)] Kasshoku Onee-san no Fudeoroshi Yume to Kibou no Bikini Armor [Chinese] [cqxl自己汉化] [Digital]

Monthly UriboZakkaTen Feb.28,2020

Monthly Vitaman 2013-10

[Jyoka] Igyou Kaikitan Mannequin | Wonderfully Grotesque Mystery - Mannequin (Monthly QooPA 2015-06) [English] [SaHa]

DT Chinpo 100-pon Acme Challenge!!

Kanoka Challenge_plot 2

Monthly QooPA 2013-10

Tanpan Kozou no Oppai Challenge!

[Yoriu Mushi] Kokuu Kara no Chousen - Challenger from the Sky

DT Chinpo 100-pon Acme Challenge!! | 100 Virgin Cock Orgasm Challenge!!

[ro] Ookami to Akazukin Ch. 3 (Monthly QooPA 2014-11) [Digital]

[Gojarun no Ozashiki (Gojarun)] Nantaika Triad to Yukai na Nakama-tachi Ochinchin Challenge Hon (THE IDOLM@STER CINDERELLA GIRLS) [Digital]

[The Monthly Istanbul (Ahugan Sugita)] Shotagari Witch [Chinese] [cqxl自己汉化] [Digital]

(SUPER24) [PureSlider (Matsuo)] MONTHLY THE IWATOVISION (Free!) [English] [ichigo-day]