[Aimaitei (Aimaitei Umami)] Futanari Osananajimi to Ore to Hajimete no Gyaku Anal Kagai Jugyou | Me and My Futanari Childhood Friend's First Extracurricular Lesson in Reverse Anal [English] [JasmineTea] [Digital]
[Ichinomiya Yuu] Naisho no Complex (COMIC Anthurium 036 2016-04) [Chinese] [黑条汉化]
[Mitarashi Kousei] Seikou Jugyou (teaching sex)
[Fuusen Club] Okaa-san wa DeliHeal-jou ~Musuko no Doukyuusei to Naisho de Tanetsuke SEX~ [Digital]
(C88) [Nachtzug (eko)] Ofuro de Naisho (Kantai Collection -KanColle-)
[Nekomaru Rentarou] Naisho no Omajinai (Puni Pedo!!) [Chinese] [我是肛♂蛋!不是 融⚥合!] [Digital]
(COMIC1☆7) [Aroma Gaeru (Numahana)] Hamon Kyoushi no Setekina Jugyou (JoJo's Bizarre Adventure) [Chinese] [瓜皮汉化]
[Anthology] Megane Loli Choukyou Jugyou!! ~Otonashii Megane Lolikko ni Muriyari Dekachin Sounyuu~ | The Loli In Glasses' Training Lesson!! ~Force Fucking a Timid Glasses Wearing Loli With My Big Cock~ Ch. 1-4 [English] {Doujins.com}
(C94) [Kitsuneya (Leafy)] Chibikko Eirei to Naisho no Okusuri Techou - Young lady hero secret medicine notebook (Fate/Grand Order)
(C93) [Brilliant Thunder (Yumeno Tanuki)] Oya ni Naisho no Iedex 6 - Dekichatta Hen [Chinese] [脸肿汉化组]
[Karakuchi Choucream] Minarai Succubus Himitsu no Jugyou (COMIC Mangekyo 2015-07) [Chinese] [绅士仓库汉化]
(C91) [Utaneya (Shion)] Naisho no Djeeta Onee-chan (Granblue Fantasy)
[HATENA-BOX (Oda Kenichi)] Hokentaiiku no Hoshuu Jugyou (Baka to Test to Shoukanjuu) [Digital]
[Sasahara Yuuki] Naisho no Happyoukai. - A Secret Recital
[Gyuunyuu Rinda] Minami Sensei no Tadashii Seikyouiku Jugyou
(C93) [ParadiseGom (Gorgonzola)] Naisho no Ohime-sama | The Princess' Secret (Dragon Quest XI) [English] =TLL + mrwayne=
(Panzer Vor! 11) [Nazunaya Honpo (7zu7)] Erika no Naisho. (Girls und Panzer)
[FEI] Sensei no Himitsu Jugyou | Sensei's Secret Lesson Ch. 1-8 [English] [Lazarus H]
[TIES (Takei Ooki)] Mahou Shoujo no Naisho no Oshigoto (Puella Magi Madoka Magica) [English]
[Human High-Light Film (Nise Tsuruta Hirohisa)] Honey no Naisho 2 (Cutey Honey)
[Abe Inori] Ninshin Inokori Jugyou (ANGEL Club 2016-09) [English] [xinsu] [Digital]
(C91) [CHARAN PORAN (Nekono Matatabi)] Naisho no Rehearsal (THE IDOLM@STER CINDERELLA GIRLS) [English]
(C88) [Polinky Hiroba (Hori Hiroaki)] Kirari-Sensei no Hapi Hapi Jugyou (THE IDOLM@STER CINDERELLA GIRLS)
[Iguchi Sentarou] Classmate to Ecchi Jugyou 4~6[Digital]
[Oohashiya (Oohashi Hikaru)] 3-nen A-gumi Kagai Jugyou (Mahou Sensei Negima!)
(CiNDERELLA ☆ STAGE 6 STEP) [Rokata Aruki (Akino Komichi)] Naisho no Ohanashi o (THE IDOLM@STER CINDERELLA GIRLS)
Kaoru Sensei no Tokubetsu Jugyou
[FEI] Sensei no Himitsu Jugyou | Sensei's Secret Lesson Ch. 1-7 [English] [Lazarus H]
Tenshi no Houkago Jugyou Chapter 4
Yume no Natsugai Jugyou
[Kitani Sai] Himitsu Jugyou
(COMIC1☆9) [Shiratamaco (Shiratama)] Naisho no Passion - The Secret Passion (Pripara) [Chinese] [CE家族社]
(C90) [Raijinkai (Haruki Genia)] Naisho no Kagai Jugyou (NEW HORIZON)
[Leafy] Mama ni Naisho no Hatsujouki [Digital]
[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]
[Marneko] Onnanoko Supple ~Seitenkan Shite Hoken no Jugyou~ | 女孩子補給品 性轉換之後保健的授業 [Chinese]
(C88) [Akuten Soushin (Kokutou Nikke)] Tenryuu Onee-chan to Naisho no Yasen Enshuu!! (Kantai Collection -KanColle-) [Chinese] [BW个人汉化]
[Takase Yuu] Naisho no Jiyuuchou
(C72) [Super Flat Lolinitron (Focke Wolf)] Karada no Naisho. (Asatte no Houkou.) [English] [Kamikakushi]
Rokujou Junko no Haisetsu Kagai Jugyou
(C92) [Tenrake Chaya (Ahru.)] Matsurinoyoru no Naisho (Kantai Collection -KanColle-)
[Monogusa Wolf] Naisho no Telephone Date
(CINDERELLA FESTIV@L) [Aozora Shoujo (Shirane Taito)] Naisho no Gao Gao Ecchi (THE IDOLM@STER CINDERELLA GIRLS) [Chinese] [星野願漢化WEI嵌字]
[Aigamodou (Ayakawa Riku)] Katori Sensei no Yasen Jugyou (Kantai Collection -KanColle-) [Digital]
[Studio Wallaby (Various)] Sakura no Naisho (Cardcaptor Sakura)
Tenkousei JK Elf 3 Saishuushou -Houkago Yagai Jugyou -
Sabotte Hamatte Hoshuu Jugyou | 偷懶♡上癮♡補習課程
Seiseki Up! Tokubetsu Kojin Jugyou no Himitsu
(C72) [MURDERHOUSE (Workaholic)] Boku to Mama no Naisho (Keroro Gunsou)
[DL Mate] Saimin Jugyou
Taiiku no Inokori Jugyou
[Light Pink] YES! Yes! Kagai Katsudou 2 (Yes! Precure 5)
(SC30) [P-Forest (Hozumi Takashi)] Otome no Naisho Nina-chan to iro iro... (Mai Otome)
(Futaket 4) [Domestic animals (Murasame Maru)] Yan Sensei no Tokubetsu Jugyou
[Abe Inori] Ninshin Inokori Jugyou (ANGEL Club 2016-09) [Chinese] [Sona5566漢化] [Digital]
Classmate to Ecchi Jugyou Ch. 9
(COMIC1☆5) [Mama ni wa Naisho (Purukogi Beach)] GIGANTIC DIVA (King of Fighers)
[Jun&Yuri (Yuriko)] Tokubetsu Jugyou Shiyou! Kashima-chan! (Kantai Collection -KanColle-)
(C83) [CIrcle Ohigetan (Ohigetan)] Ohigebon-35 Classmate Ochinchin Jugyou Sankan [English] {Forbidden+Ranzu}
Ellen-sensei no Houkago Tokubetsu Jugyou
[Iguchi Sentarou] Classmate to Ecchi Jugyou Ch. 1 [English] [Digital]
[N2jirai (Nimu)] Tsukihi-chan ni wa Naisho de (Nisemonogatari) [Digital]
(C89) [666PROTECT (Jingrock)] Tenkousei JK Elf -Houkago Choukyou Jugyou-
(COMIC1☆8) [Atelier Lunette (Mikuni Atsuko)] Naisho Nano! -Haruhara-ke San Shimai Monogatari-
[FEI] Sensei no Himitsu Jugyou Ch. 1-5
(COMIC1☆7) [Bakunyu Fullnerson (Kokuriu)] Naisho no Oshigoto (Bakemonogatari)
Sakurako Sensei no Tokubetsu Jugyou
[Kitakata Kuniaki] Himitsu no Keijiban H na Onna no Naisho Banashi
(C90) [Supurabi (Haruharu Haruto)] Futari de Naisho no Ohanashi (Granblue Fantasy)
Naisho no Kagai Jugyou
[Hayake] Sensei to Himitsu no Jugyou | Secret Lessons with Sensei (COMIC LO 2021-07) [English] {Mistvern} [Digital]
Toron no Naisho (Tron's Secret) (Megaman)
[Usi] Otto ni Naisho de Ajimi Shite Ch. 1-8
(C90) [Shinobi-Rocket (Sasamashin)] Lady to Naisho no Yoru Sanpo (Kantai Collection -KanColle-)
[Phantom] Tsuya Ane ~Onee-san no Micchaku Jugyou~ [Chinese]
[Tawara Hiryuu] Kanojo ni Naisho de (COMIC Tenma 2015-03) [Chinese] [黑条汉化]
(C71) [Kurage no Candume (Yoshino)] Naisho! It's a Night Show! (Simoun)
[Balpanther] Naisho no Undoukai (Puella Magi Madoka☆Magica)
[Musashimaru] Touzen, Imouto ni wa Naisho de
Classmate to Ecchi Jugyou 8
[Aichi Shiho] Okaa-san ni wa Naisho (Otokonoko HEAVEN Vol. 25 DMM Tokubetsu Ban) [Chinese] [瑞树汉化组] [Digital]
[Kaitou Yuuhi] Naisho no Oshigoto (Otokonoko HEAVEN Vol. 24) [English] [mysterymeat3]
(Reitaisai 9) [Hannama (Soine)] Kasen-chan Jugyou desuyo (Touhou Project)
[Rivajima (Yajima Index)] Isuzu no Naisho Banashi (Amagi Brilliant Park) [Digital]
Kitakami-san to Naisho no Naisho
[Babymaker (Beco)] Naisho no Kozukuri 2
(C88) [H-SQUAD (Guglielmo)] Zenra de Suiei no Jugyou!! | Naked Swimming Class!! [English] =LWB= [Colorized] [Decensored]
(CR31) [Studio Wallaby (Deep Purple '72)] Suu no Naisho!! -The secret of Su- (Vampiyan Kids)
[Konohana] Naisho no Jikan | Secret Times (COMIC Megastore 2009-04) [English] [Hentai from Hell]
[Ookami Uo] (Ryuushutsu) JSJC Naisho no Jian
[Keno Yantarou] Hageshii Kagai Jugyou
[Hanpera] Nakadashi Tsuyudaku Kyonyuu Jugyou | 膣射出汁溢出 巨乳授業 [Chinese]
[Keno Yantarou] Owaranai Kagai Jugyou
Kawakami Sensei to Futaba no Himitsu Kojin Jugyou
[Oozora Kaiko (Kaiko)] Papa ni wa Naisho no Boshi no Fureai [English] {forbiddenfetish77/cocblockula}
(C73) [Samurai Ikka (Kureyon)] Yomako Sensei no Yuuwaku Jugyou (Tengen Toppa Gurren Lagann)
(C87) [Jaku Shouji Musho Shokun (Futaba Yae)] Naisho no Hakuchi Shuuri (Kantai Collection -KanColle-)
(C92) [Brilliant Thunder (Yumeno Tanuki)] Oya ni Naisho no Iedex 5 - Futsukame Hen
(C80) [Avion Village F (Fechi)] Kamishirasawa Keine no Dosukebe Kojin Jugyou (Touhou Project)
Sensei no Himitsu Jugyou | Sensei's Secret Lesson Ch. 1-9
Yancha Bouzu Yoru no Kagai Jugyou
Sensei no ♥ Himitsu Jugyou
[Yamano Kitsune] Injoku Jugyou
[Kawamura Tsukasa] Naisho ni Shitai Juu no Monogatari [Digital]
(C91) [Anmitsu Ryokan (Yoru Yoru)] Naisho dakara ne (Sengoku Collection)
[FEI] Sensei no Himitsu Jugyou | Sensei's Secret Lesson Ch. 1-4 [English] [Lazarus H]
Netorare kagai jugyo.
Sensei to Himitsu no Jugyou | Secret Lessons with Sensei
Chiron Sensei no Seikou Jugyou
[Yuzuponz (Kikira)] Inumimi Seikatsu ~Hatsujouki no Itoko Namahame Tokubetsu Jugyou~ [English] {JUSTICE} [Digital]
Hajimete no Jugyou Sankan
Keiko Sensei no Kagai Jugyou - Keiko Sensei Series 1
(C92) [Tatsumaki Koutei (Takei Tsukasa)] Mifune-san to Umi de Naisho no (THE IDOLM@STER CINDERELLA GIRLS)
(C93) [J.D.World (Fumi Miyabi)] Onee-san ni wa Naisho ne (Kantai Collection -KanColle-) [Chinese] [无毒汉化组]
[Oozora Kaiko (Kaiko)] Papa ni wa Naisho no Boshi no Fureai [Chinese] [某三人汉化组]
[FEI] Sensei no ♥ Himitsu Jugyou Ch. 1-8
(C74) [Naruho-dou (Naruhodo)] Sekaiichi Uketai Anko no Jugyou (Naruto) [English] [Colorized]