Challenger Quant Engineer

One-shota Challenge

(C86) [Rotary Engine (Kannazuki Motofumi)] Gochuumon wa Shitagi desu ka? (Gochuumon wa Usagi desu ka?)

Maid ni Ryakudatsu Sareru Goshujin-sama

TEENISM

(C80) [Rotary Engine (Kannazuki Motofumi)] Tooru-chan de Asobou! (A Channel) [English] [FPS-Vexed]

[Rotary Engine (Kannazuki Motofumi)] Cos Mame (Gochuumon wa Usagi desu ka?) [Chinese] [残碑日月个人汉化] [Digital]

[Korotsuke] Nekura Megane ♀ | The Creepy Glasses Girl [English] [Ongoing] {darknight}

Yuunou Engineer ni wa Ura no Kao ga Aru Watashi o Kaihatsu suru Dekiai Step | 能干程序员隐藏的一面 把我“开发”的溺爱步骤 1-8

(C75) [Rotary Engine (Kannazuki Motofumi)] Rizumi Tengoku (Doki Doki Majo Shinpan!)

Angel Trap

[Mousou Engine (Korotsuke)] Izen to Shite Nigate na Senpai (Hitozuma) o Otosu Hanashi [Chinese] [我尻故我在個人漢化]

(C94) [Bizensiki Roroppu (Bizen)] Oshiri Ecchi Challenge (Hatoba Tsugu)

(C97) [Yuasa Rengou (Jean Louis)] Tanpan Kozou no Oppai Gym Challenge! | A Boy In Short's Big Breasted Gym Challenge! (Pokémon Sword and Shield) [English] {Doujins.com}

Futanari Milk Challenge

(C90) [Carnage Engine (Bakudanbonbon)] Da Futago Kouhosei (Hyperdimension Neptunia) [English] [potocat]

(C88) [Shinobi-Rocket (Sasamashin)] Akatsuki Challenge! (Kantai Collection -KanColle-)

(Shota Scratch 15) [Kirsi Engine (Kirsi)] Kyuushuu Mesu Shota (Kyuushu Sentai Danjija) [English] [mysterymeat3]

Dokidoki Mesu Ochi Gohoushi Challenge

[Mousou Engine] Totsuzen Tomari ni Kita Juushi (Hitozuma) o Otosu Hanashi [Chinese] [ssps个人汉化]

Necrotech Engineering

[Korotsuke] Nekura Megane ♀

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

よわくてニューゲーム。

Nekura Megane ♀

[Rotary Engine (Kannazuki Motofumi)] Uchinoyome (Gochuumon wa Usagi desu ka?) [Chinese] [Sinris个人汉化] [Digital]

[Sakura Garden (Shirosuzu)] Chaldea Outdoor Challenge Abby-chan to Issho 3 (Fate/Grand Order) [Chinese] [一只麻利的鸽子汉化] [Digital]

Pancakes Challenge

(HoloKle) [Rotary Engine (Kannazuki Motofumi)] Otona no Hologra | Adult's Holovid (Usada Pekora, Sakura Miko) [English] [Xzosk] [Colorized]

Zetsurin Challenge

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

(C94) [ANDOROGYNOUS (Kiyose Kaoru)] Futanari Milk Challenge 4

[Sakura Garden (Shirosuzu)] Chaldea Outdoor Challenge Abby-chan to Issho 3 | Chaldea Outdoor Challenge with Abby-chan 3 (Fate/Grand Order) [Digital] [English] [The Blavatsky Project]

Nekura Megane ♀

[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]

Kashima-san to Akimatsuri Challenge

(C84) [STUDIO TIAMAT (TANABE)] BREAK BLUE DOUBLE ENGINE (BLAZBLUE)

Kyokon Shoujo Nyoudou Challenge!

(COMIC1☆8) [Rotary Engine (Kannazuki Motofumi)] Saikin, Sousui no Yousu ga Chotto Okashitai n da ga. (Sekai Seifuku ~Bouryaku no Zvezda~) [English] [PSYN]

[Rotary Engine (Kannazuki Motofumi)] Ore, Naedoko ni Narimasu. (Ore, Twintail ni Narimasu.) [Chinese] [CE家族社] [Digital]

(C76) [The Latest Engine (Fujiyama Takashi)] Nodocchi Oppai (Saki)

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

Yowakute New Game.

(CCFukuoka28) [Kirsi Engine (Kirsi)] Muttsuri Shoukai ni Youkoso (Baka to Test to Shoukanjuu) [English] [mysterymeat3]

Namaiki Kuchikukan Wakarase Challenge | I'll Make You Understand Challenge

[Terasu] Teitoku ga Shiranai Tokoro de Yarichin Seibishi to no Uwaki Sex ni Dohamari Shita KanColle no Tenryuu | While admiral doesn't know it, Tenryuu is having NTR sex with an engineer. (Kantai Collection -Kancolle-) [English]

[Korotsuke] Nekura Megane ♀

(SC20) [The Latest Engine (Fujiyama Takashi)] TLE-PW01 (Soulcalibur)

Yuunou Engineer ni wa Ura no Kao ga Aru Watashi o Kaihatsu suru Dekiai Step | 能干程序员隐藏的一面 把我“开发”的溺爱步骤 1-4

Planning AV: One towel men's bath challenge in St. Louis and Honolulu

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

[Oh! Great] Engine Room

[Rotary Engine (Kannazuki Motofumi)] LOTUS BREAKDOWN (Accel World) [English] [HappyMerchants] [Digital]

[Irojikake Matome Blog (Kurokawa Otogi)] Renzoku Kyousha Challenge (Paizuri Senmon Zasshi "Zettai Chichi Kyousha" Vol 1) [Textless]

催眠天国 Challenge 03

Hitozuma Tokiko no Tenraku

Nekura Megane ♀ | The Creepy Glasses Girl

[Fukuyama Naoto] Saimin Tengoku Challenge 03 (COMIC BAVEL 2021-02) [Chinese] [零星汉化组] [Digital]

Mordred nipple Challenge | 莫德雷德乳首挑戰

[Rotary Engine (Kannazuki Motofumi)] Uchinoyome (Gochuumon wa Usagi desu ka?) [Chinese] [Sinris个人汉化] [Digital]

[Boxphilia Engineers (Thomas TABAYASHI)] Departures [Chinese] [不可视汉化]

Flan-chan no Saimin Nikubenki Challenge

[Kirimoti Texcha (Yoyoyoyou)] Dauni! (Splatoon)

(C96) [Rotary Engine (Kannazuki Motofumi)] Senko-san, Yobai Suru. (Sewayaki Kitsune no Senko-san)

(Shota Scratch 2) [Panda 4gou (Shima Kyousuke)] Lag Lag 2 (Lagoon Engine)

(Sennen Battle Phase 11) [ANNIELAURIE (Toyama Nanao)] SEX CHALLENGERS 02 (Yu-Gi-Oh! ARC-V)

[Heroine Engineering (TAREkatsu)] Bad-end simulation Vol. 2 add'l (Bishoujo Senshi Sailor Moon) [English] [Kuraudo]

Kodomo Challenge

[Korotsuke] Nekura Megane ♀

(C94) [Bizensiki Roroppu (Bizen)] Oshiri Ecchi Challenge (Hatoba Tsugu)[Chinese][夏姬霸汉化组]

(circle roman hikou) JK5人、性癖乱れ咲きっ!! (comic shingeki 2014 09)

Hologura Adult Version

(C93) [MeltdoWN COmet (Yukiu Con)] Kanade Challenge Kouhen

[Kirsi Engine (Kirsi)] Kasshoku Seirei | The Dark Spirit [English]

Thunder Blade

Namaiki Kuchikukan Wakarase Challenge | I'll Make You Understand Challenge

(Utahime Teien 4) ["Tsu" ga Mittsu. (Tsuttsu)] Akane Challenge!? 2 (THE IDOLM@STER CINDERELLA GIRLS)

オフパコクエストJK篇

[Aro Hiroshi] Kagaku no Nyotaimori - Engineering of Raised Outlay

(C92) [Slime Kikaku (Kuriyuzu Kuryuu)] Akatsuki no Oyome-san Challenge | Akatsuki's Bride Challenge (Kantai Collection -KanColle-) [English] {Doujins.com}

[Kurokoshi You] Challenge Week (COMIC Megastore 2010-07) [English] {doujin-moe.us}

Nekura Megane ♀

[Korotsuke] Nekura Megane ♀

(Motto Warunodesu... Ouji) [Sakura Garden (Shirosuzu)] Aisha Challenge Renji ☆ 4 (Sennen Sensou Aigis)

[Korotsuke] Nekura Megane ♀ | The Creepy Glasses Girl [English] [Ongoing] {darknight}

Nogi Sonoko wa Kanojo de Aru

(C89) [Rotary Engine (Kannazuki Motofumi)] Chimahame (Gochuumon wa Usagi desu ka?) [English] [Doki Fansubs]

Futanari Milk Challenge 3 | 扶她榨乳挑战 3

[Tsubaki Jushirou] Ane Lover [Digital]　

[Rotary Engine (Kannazuki Motofumi)] MBJS ga Maiorita! (Watashi ni Tenshi ga Maiorita!) [Digital]

Akatsuki-chan Mayonaka no Otoile Challenge

(C91) [Molossan (Morochin-san)] DokiDoki Mesuiki! Challenge!! (Various) [Chinese] [不協和音漢化]

[Kirsi Engine] Laura no Ketsu Ana Shugyou (Turn A Gundam)

(Shota Collection 4) [Panda 4gou (Shima Kyousuke)] Lag Lag (Lagoon Engine)

(C92) [Andorogynous (Kiyose Kaoru)] Futanari Milk Challenge

[Kirsi Engine (Kirsi)] Stature of a Woman 175 [English]

(Reitaisai 8) [TLE (Fujiyama Takashi)] Touhou Nyuusatsuroku (Touhou Project)

[Metacorapusu (Metacora)] JC Chinpo-beya Ikkagetsu Seikatsu Challenge!! (Kouhen) [Digital]

Nako-chan no Hentai Doctor Fish Haishin

Nyuubu Shitara Ore Igai Zenin Ero ROM Layer datta

(Angel Time 3) [Syunkan Saidaihusoku, Night FUCKERS (Pony R, Mitsugi)] Phantom Challenge! ~Futari no Domannaka Itadakimasu!~ (Kaitou Tenshi Twin Angel)

Double Up Challenge!

(C94) [Mousou Engine (Korotsuke)] Martina Onee-chan no Seikatsu | Big Sis Martina's Sex Life (Dragon Quest XI) [English] =The Lost Light + mrwayne=

(C81) [TLE (Fujiyama Takashi)] Haru no Hana (Senran Kagura)

adult challenge 1

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

Utsuho Challenge!! ~Yobai ni Chousen~

Doki Doki ❤ Ticket Challenge! | 心跳不已的搶票大挑戰！

(C78) [Nounai Kanojo (Kishiri Toworu)] Remilia kara no Chousenjou | Remilia's Challenge (Touhou Project) [English] [UMAD]

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

DUAL:ENGINES

[Toufu Insider] Saimin Appli Challenge!!

[Rotary Engine (Kannazuki Motofumi)] Tatsu no Otoshigo (Ryuuou no Oshigoto!) [Chinese] [oo君x靴下联合汉化][Digital]

[Danzi Engine (Shiba Yuuji)] Osugaki Sentou [English] [Digital]

U Challenge

[Fukuyama Naoto] Saimin Tengoku Challenge 06 (COMIC BAVEL 2022-02) [Chinese] [萬神殿牛頭人個人漢化] [Digital]

Yousei-san no?! Himitsu no Bouken no Tobira Preview ver

[Anthology] Angel Club MEGA Vol. 04

Mian no Gal Challenge | Mian's Gyaru Challenge

JS Kenkyuukai | JS Research Seminar

Kasen-chan no Jasen Rouraku Challenge

(C80) [Rotary Engine (Kannazuki Motofumi)] Yawaraka Menma Donburi (Ano Hi Mita Hana no Namae wo Bokutachi wa Mada Shiranai.)

[Rotary Engine (Kannazuki Motofumi)] HIGHSCHOOL OF THE DATE (Date A Live)

Okay-san no Nukinuki Dosukebe Challenge

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

[ViperXTR] I Challenge You! (Kono Subarashii Sekai ni Syukufuku o!) [奶綠個人漢化]

[Korotsuke] Nekura Megane ♀

Hitori Challenge Rakugaki

（C96） Dairoku! Otoile Challenge

[Mousou Engine] Totsuzen Tomari ni Kita Juushi (Hitozuma) o Otosu Hanashi

(C64) [Rotary Engine (Kannazuki Motofumi)] Midare (Gad Guard)

Bad-end simulation Vol. 2 add'l

F6 Matsuno Karamatsu no Sex Challenge

Kogaku Otome wa Oiru no Kaori | Engineer Girl’s Oil Scent {Hennojin}

[Korotsuke] Nekura Megane ♀ | The Creepy Glasses Girl [English] [Ongoing] {darknight}

(C90) [Akausagi (Fukuyama Naoto)] 100 challenge (Hundred)

(C72) [Rotary Engine (Kannazuki Motofumi)] Kodomo Geass. (Code Geass) [English] {doujin-moe.us}

(C92) [Slime Kikaku (Kuriyuzu Kuryuu)] Akatsuki no Oyome-san Challenge | Akatsuki's Bride Challenge (Kantai Collection -KanColle-) [English] {Doujins.com}

DokiDoki Mesuiki! Challenge!!

(C71) [Quantum Leap, Red Spec (Kagurazaka Sakina, ZiZZ)] Thunder Blade (Magical Girl Lyrical Nanoha)

Kanade Challenge Zenpen