(C90) [Raijinkai (Haruki Genia)] Naisho no Kagai Jugyou (NEW HORIZON) [English] {Hennojin}
[Yuzuponz (Kikira)] Inumimi Seikatsu ~Hatsujouki no Itoko Namahame Tokubetsu Jugyou~ [Digital]
[Ookami Uo] (Ryuushutsu) JSJC Naisho no Jian Ch. 1-5 [Chinese]
Sabotte Hamatte Hoshuu Jugyou | 偷懶♡上癮♡補習課程
(COMIC1☆7) [Bakunyu Fullnerson (Kokuriu)] Naisho no Oshigoto (Bakemonogatari)
[Jingrock] Kokuhaku | Confession (Shougakusei Koukan Jugyou) [English] [Yoroshii]
[Koneko Gumi, Shounen Marionette (Poron, Kuonji Shutaka, Namao)] Naisho no Otogibanashi [English] {Shotachan}
[Rakko] Papa ni wa Naisho! | Keep It A Secret From Daddy! (Murikuri) [English] [desudesu]
(SC59) [Marked-two (Maa-kun)] Mikan no Naisho (To LOVE-Ru)
[Shouji Ayumu] Naisho desu yo | It's a secret! (Chiccha-na Onaka) [English] [Rin]
[Iguchi Sentarou] Classmate to Ecchi Jugyou 7 [Digital]
[Amatarou] Futari de Jugyou wo Nukedashite ♡ | Sneaking out of Class Together [English] {YQII}
[Iguchi Sentarou] Classmate to Ecchi Jugyou Ch.1 [Chinese]
(COMIC1☆7) [Aroma Gaeru (Numahana)] Hamon Kyoushi no Setekina Jugyou (JoJo's Bizarre Adventure) [Chinese] [瓜皮汉化]
[ether] Sennyuu Shita Joshikou no Jugyou ga Erosugiru Ken! - Irechae! Shirumamire Momikucha Dessin Jugyou
[Ika Client] Girotin Konsoku Hoken no Jugyou
(COMIC1☆4) [Human High-Light Film (Shiosaba!)] Naisho no Makinami (Rebuild of Evangelion) [English]
(C92) [Macaron*Sketch (Yukatama)] Naisho no Cappuccino (Gochuumon wa Usagi desu ka?)
[TLB] Otousan to Naisho ~Aru Daikazoku no Chichi to Musume Yuku Toshi Kuru Toshi Himehajime~
Hokenshitsu de Jugyou Chu! | Class in the Nurse's Office!
(C73) [SUTE☆POTE (Kagura Soushi)] riri tama hoshuu jugyou! | Riritama Supplementary Lessons (Mahou Shoujo Lyrical Nanoha) [English]
(Shota Scratch 18) [Usamimi Zukin (Kosuzu)] Himitsu No Naisho (The Legend of Zelda)
Girotin Konsoku Hoken no Jugyou
(C88) [Polinky Hiroba (Hori Hiroaki)] Kirari-Sensei no Hapi Hapi Jugyou (THE IDOLM@STER CINDERELLA GIRLS)
(C85) [Ishikawa Pro (Ishikawa Naoya)] Kuttsukiboshi -Naisho no Oshigoto- (Kuttsukiboshi)
Jugyou Chuu Ni You Kya Joshi Ga Omorashi
[Human High-Light Film (Nise Tsuruta Hirohisa)] Honey no Naisho (Cutey Honey)
(COMIC1☆6) [MIX-ISM (Inui Sekihiko)] Naisho no ×××。 (Bakemonogatari)
[Rokkaku Yasosuke] Naisho Zuma (Comic Shitsurakuten 2013-02) [English] [Facedesk]
(C88) [nothingfades (Amane Nekoko)] Naisho no Hajimete Kouhen (PriPara)
(SC26) [PLUM (Kisaragi Kanna)] Naisho! (Sukatto Golf Pangya)
Tenshi no Houkago Jugyou Chapter 2
(C54) [Studio Wallaby (Various)] VITAMIN-B5 1/2 Ruri Ruri Naisho no Arbeit Nikki (Martian Successor Nadesico)
Tenshi no Kagai Jugyou Ch. 9
[Morishima Kon] Naisho no Gohoushi (COMIC Tenma 2016-04) [English] [Kusojiji]
Kyou-sei Kagai Shidou
(C70) [Dr.VERMILION (Riku, Kurasawa Makoto, Petenshi)] Youmu no Naisho! - Youmu's Secret (Touhou Project) [English]
[Ohigetan] Chikan Gakushuu Shidou Youryou ~Shou 6 Gyaku Chikan Kagai Jugyou Hen~ (COMIC LO 2016-08) [English] [Striborg]
[Rafumioshi Goku Hyoe] Yume no Natsugai Jugyou
(C92) [Atelier Lunette (Mikuni Atsuko)] Naisho Nano! -Haruhara-ke Sanshimai Monogatari- 3 [English]
(C83) [Shinobi Rocket (Sasamashin)] HinaNagi Tokubetsu Jugyou (Hayate no Gotoku!)
Naisho no Kagai Jugyou Ouyou Hen
[SAS] Kagai Jugyou ni Youkoso!(COMIC Penguin Club Sanzokuban 2011-12)
(C92) [megalodon (Mezashi Gohan)] Albion Gakuen Himitsu no Jugyou (Granblue Fantasy)
(C86) [Mama ni wa Naisho (Plasma Beach)] Kinniku Chocolate (Samurai Spirits)
[Titokara 2nd Branch (Manami Tatsuya)] Naisho no Kimochi Bangai Hen (Zero no Tsukaima)
(C92) [Tenrake Chaya (Ahru.)] Matsurinoyoru no Naisho (Kantai Collection -KanColle-)
(C71) [Okosama Lunch (Nishinozawa Kaorisuke, Hirayan)] Okosama Lunch Kagai Jugyou 2+ Plus
(C86) [Go-Go-Merry-Go-Round (Kasai Ema)] Naisho no Natsuyasumi. (Neon Genesis Evangelion) [English] [CGrascal]
[Garakuta Shoujo (Miito Shido)] Kanojo wa Chou Yuumei Geinoujin... Soshite Boku ni Naisho de AV Joyuu Satomi-Satona Gojitsudan 2
(C88) [Crybaby Method (Hissui)] Kawaii Kawaii Lulu-chan no Choppiri H de Naisho na Himitsu (League of Legends)
[Fuusen Club] Okaa-san wa DeliHeal-jou ~Musuko no Doukyuusei to Naisho de Tanetsuke SEX~ [Digital]
[Okosama Lunch (Nishinozawa Kaorisuke, Hirayan)] Okosama Lunch Kagai Jugyou Light
(C81) [TIES (Takei Ooki)] Kobato no Naisho. (Boku wa Tomodachi ga Sukunai) [Decensored]
Hageshii Kagai Jugyou
[Konohana] Naisho no Jikan (COMIC Megastore 2009-04) [English] [AlphaYang]
(C95) [Doku Tonkotsu Niku Dorei (Tanohito)] Chika-chan ni mo Naisho no Himitsu 3 (Love Live! Sunshine!!)
[Balpanther] Naisho no Undoukai (Puella Magi Madoka☆Magica)
Tenshi no Houkago Jugyou Chapter 3
[Coffee Maker (Asamine Tel)] Naisho desu yo (Fate/Grand Order) [Digital]
[Yukan high Zakura (Chieko)] Shashin-bu Kounai Roshutsu Satsueikai - Bijutsu Jugyou Dessin Model 2 [Chinese] [Digital]
(SUPERKansai19) [Kume (Minakami)] Kimi to Himitsu no Jugyou [English] {Shotachan}
Tobibako no Jugyou
Keiko Sensei no Chijoku Jugyou
(C76) [7 Men Zippo (Kamishima Akira)] Hokenshitsu de Jugyou Chu! | Class in the Nurse's Office! (Katekyo Hitman REBORN!) [English] [Lady Phantomhive]
(Reitaisai 9) [Hannama (Soine)] Kasen-chan Jugyou desuyo (Touhou Project)
[ACTIVA (SMAC)] Yomako-sensei no Tokubetsu Jugyou (Tengen Toppa Gurren Lagann)
(Panzer Vor! 11) [Nazunaya Honpo (7zu7)] Erika no Naisho. (Girls und Panzer)
Classmate to Ecchi Jugyou Ch. 13
[FEI] Sensei no ♥ Himitsu Jugyou Ch. 1-7
[Higashino Mikan] Kareshi ni Naisho de ❤ | Behind My Boyfriend's Back ❤ (COMIC Koh Vol. 3) [English] [sureok1]
(C90) [Raijinkai (Haruki Genia)] Naisho no Kagai Jugyou (NEW HORIZON)
(C74) [Naruho-dou (Naruhodo)] Sekaiichi Uketai Anko no Jugyou (Naruto) [English] [Colorized]
[Shindou] Naisho no Yurine-san | Yurine's Secret (COMIC ExE 02) [Chinese] [我尻故我在個人漢化]
(COMIC1☆9) [Atelier Lunette (Mikuni Atsuko)] Naisho Nano! -Haruhara-ke Sanshimai Monogatari- 2 [English]
(Shota Scratch 18) [Usamimi Zukin (Kosuzu)] Himitsu no Naisho (The Legend of Zelda) [English] =SW=
(CINDERELLA FESTIV@L) [Aozora Shoujo (Shirane Taito)] Naisho no Gao Gao Ecchi (THE IDOLM@STER CINDERELLA GIRLS)
(C85) [Majimadou (Matou)] Enoshima-sensei no Chou Zetsubou-teki Zecchou Jugyou + Futaket Paper (Danganronpa) [English] [N04H]
(C89) [666PROTECT (Jingrock)] Tenkousei JK Elf -Houkago Choukyou Jugyou-
[Jun&Yuri (Yuriko)] Tokubetsu Jugyou Shiyou! Kashima-chan! (Kantai Collection -KanColle-)
[Junk Center Kameyoko Bldg] Okaa-san ga Naisho de Hikikomori Musuko no Seishori no Aite o Shiteiru Hanashi.
Classmate to Ecchi Jugyou Ch. 9
[SPARK UTAMARO] Immoral Ichigou
[Junai Meringue-don (Kijima Hyougo)] Saisho no, Naisho no. + Natsu no Kedamono (Haikyuu!!)
(Reitaisai 9) [Hannama (Soine)] Kasen-chan Jugyou Desu-yo (Touhou Project) [English] {Pesu}
(C73)[Alpha to Yukaina Nakamatachi] Naisho no Trap (Quiz Magic Academy)
Zenra de Suiei no Jugyou!!
[Oshii Rei] Kougyaku Jugyou [Digital]
[Phantom] Tsuya Ane ~Oneesan no Micchaku Jugyou~
(C82) [THE FLYERS (Naruse Mamoru)] Ako-chan to Naisho no XX + plus (Saki Achiga-hen)
[Keno Yantarou] Hageshii Kagai Jugyou
Keiko Sensei no Kagai Jugyou - Keiko Sensei Series 1
Yanagida-sensei no Zenra Jugyou
(C56) [Studio Wallaby (Deep Purple '72, Meguro Sankichi)] Jubei-chan no Naisho (Jubei-chan)
Ninshin Inokori Jugyou
[Anzaki Moral] Kanbyou Shite Ageru | Sinful Nursing (Hanjuku Yawaana Jugyou) [English] [ugliblawg]
Rika Sensei no Kagai Jugyou | Rika Sensei's Extracurricular Lesson
Muchimuchi Kanojo no NTR Hoshuu Jugyou
[Oozora Kaiko (Kaiko)] Papa ni wa Naisho no Boshi no Fureai [Chinese] [某三人汉化组]
(C58) [Studio Wallaby (Deep Purple '72, Kaneko Toshiaki, Kura Oh)] Oukoku No Naisho (Puppet Princess of Marl's Kingdom)
(C70) [Dr.VERMILION (Riku, Kurasawa Makoto, Petenshi)] Youmu no Naisho! (Touhou Project)
(C89) [Coopy (Yomogi)] Chino-chan to Naisho no Obenkyou (Gochuumon wa Usagi desu ka?)
[Jackpot 64 (HAN)] Alicia-mama to Naisho Ecchi Suru Hon (Granblue Fantasy) [Digital]
(COMIC1☆9) [Atelier Lunette (Mikuni Atsuko)] Naisho Nano! -Haruhara-ke Sanshimai Monogatari- 2
[Nekoya] Kyokutou no Naisho (Kyoukai Senjou no Horizon) [Digital]
(C82) [Cocotto (Mizusawa Mimori)] Naisho no xx dake Hon
[Nekomaru Rentarou] Naisho no Omajinai (Puni Pedo!!) [Chinese] [我是肛♂蛋!不是 融⚥合!] [Digital]
[TIES (Takei Ooki)] Mahou Shoujo no Naisho no Oshigoto (Puella Magi Madoka Magica) [English]
(Houraigekisen! Yo-i! 14Senme) [Testa Kitchen (Testa)] Onee-sama-tachi ni wa Naisho! (Kantai Collection -KanColle-)
[Fireball Products] Seki Sensei No Kagai Jisshuu Ver1.5
[Pirates Patrol (Otokawa Kazuki)] Naisho no Omorashi [English] [Digital]
[2B (MANA-KO)] Naisho no Haruna-chan (To LOVE-Ru) [Digital]
[Hiyashi Asia (Agurecchi)] Lunasa Onee-chan no Naisho no Bansoukai (Touhou Project) [Digital]
(C73) [Samurai Ikka (Kureyon)] Yomako Sensei no Yuuwaku Jugyou | Teacher Yomako's Temptation Teaching (Tengen Toppa Gurren Lagann) [English] [q91]
Tenshi no Houkago Jugyou Chapter 10
[kedamono (Tori Hrami)] Naisho no Undoukai Second Season [Colorized] [Digital]
[Saeki Takao] Asa Made Kojin Jugyou
Classmate to Ecchi Jugyou Ch.1
(C72) [Super Flat Lolinitron (Focke Wolf)] Karada no Naisho. (Asatte no Houkou.) [English] [Kamikakushi]
[MIKARIN] Okaasan ni Naisho
(SC3) [Studio Wallaby (Deep Purple '72, Jacky Knee de Ukashite Punch x2 Summer de GO!)] Naisho no Azuki (Azuki-chan)
[Kasuga, Shin] Hadakanbo Kyouiku - JK mo Oppai Marudashi!? Sukoyaka Zenra Jugyou 2 | Hadakanbo Education - Schoolgirls' Breasts are Exposed!? Naked Health Lesson 2 [English] [Decensored] [artfish]
(C88) [Nachtzug (eko)] Ofuro de Naisho (Kantai Collection -KanColle-)