(C73) [Samurai Ikka (Kureyon)] Yomako Sensei no Yuuwaku Jugyou (Tengen Toppa Gurren Lagann)
[Maruta] Boku to Kanojo no Hikakuteki Naisho no Nichijou Chapter 2 (English)
(C90) [Dragon Kitchen (Sasorigatame)] Rem-rin to Naisho no Oshigoto (Re:Zero kara Hajimeru Isekai Seikatsu) [Chinese] [空気系☆漢化]
[Maekawa Hayato] Onee-chan Sensei no Himitsu Jugyou [Chinese] [篆儀通文書坊漢化]
(C81) [TIES (Takei Ooki)] Kobato no Naisho. (Boku wa Tomodachi ga Sukunai)
(C91) [Brilliant Thunder (Yumeno Tanuki)] Oya ni Naisho no Iedex - Fuyuyasumi no Toode Hen [Chinese] [肥宅魯蛇寒假依舊只能窩在家中獨自射出殘渣翻譯]
(C81) [TIES (Takei Ooki)] Kobato no Naisho. (Boku wa Tomodachi ga Sukunai) [English] [QB Translations] [Decensored]
[Aichi Shiho] Okaa-san ni wa Naisho (Otokonoko HEAVEN Vol. 25 DMM Tokubetsu Ban) [Chinese] [瑞树汉化组] [Digital]
(SUPER22) [Kiiro Bird (Pappa)] Oyajidomo ni wa Naisho dazo (Magi: The Labyrinth of Magic)
(C89) [666PROTECT (Jingrock)] Tenkousei JK Elf -Houkago Choukyou Jugyou- | High School Elven Transfer Student -After School Sex Training Lessons- [English] [Tremalkinger]
(Shota Scratch 25) [Yabure Kabure (Agemon)] Ogibo-san niwa Naisho desu. (Fullmetal Alchemist)
(C88) [Decoppachi (Hidiri Rei)] Naisho no IV Satsuei-kai (THE IDOLM@STER MILLION LIVE!)
[Garakuta Shoujo (Miito Shido)] Kanojo wa Chou Yuumei Geinoujin... Soshite Boku ni Naisho de AV Joyuu Satomi-Satona Gojitsudan 1
(CT5) [Transistor Baby (Hata)] Sensei to Himitsu no Kagai Jugyou (Summon Night 3)
[Kino Hitoshi] Kojin jugyou
Kitakami-san to Naisho no Naisho
(COMIC1☆8) [Atelier Lunette (Mikuni Atsuko)] Naisho Nano! -Haruhara-ke San Shimai Monogatari- [English]
(Magical Royale) [Kuromori-ya (Morii Fuzuki)] Onna Kishi no Kagai Katsudou (Mahou Shoujo Ikusei Keikaku)
Ottori Kyoushi no Nettori Jugyou
(C94) [Service Heaven (Azukiko)] Kawakami Sensei to Futaba no Himitsu Kojin Jugyou (Persona 5) [English] [CGrascal]
(Shota Scratch 25) [Yabure Kabure (Agemon)] Ogibo-san niwa Naisho desu. (Fullmetal Alchemist) [English] {Shotachan}
(CINDERELLA FESTIV@L) [Aozora Shoujo (Shirane Taito)] Naisho no Gao Gao Ecchi (THE IDOLM@STER CINDERELLA GIRLS) [Chinese] [星野願個人漢化]
[Iguchi Sentarou] Classmate to Ecchi Jugyou Ch.2 [Chinese]
[Studio Wallaby (Kokuden Kadotake, Shijuukara, Leopard)] Shaorin no Naisho (Mamotte Shugogetten!)
[Kinako Gyuu Nyuu (Tomoharu)] Naisho ni Shiyou ne (Summer Wars) [Raw]
(C93) [ParadiseGom (Gorgonzola)] Naisho no Ohime-sama | The Princess' Secret (Dragon Quest XI) [English] =TLL + mrwayne=
[Anzaki Moral] Hanjuku Yawaana Jugyou - Soft-Boiled, so Sweet Hole Lesson.
(C81) [Sukapon-Do (Kagawa Tomonobu, Yano Takumi)] Zerogumi Kagai Jugyou (Final Fantasy Type-0)
[Maekawa Hayato] Onee-chan Sensei no Himitsu Jugyou
Asahina Mikuru-sensei no Tokubetsu Jugyou
[Leafy] Mama ni Naisho no Hatsujouki
[Nekomaru Rentarou] Naisho no Jugyou (U-148 cm.) [Chinese] [我是肛♂蛋!不是 融⚥合!] [Digital]
[usi] Otto ni Naisho de Ajimi Shite 2 [Digital]
Daitai Tadashii Sensei no Jugyou
[TLB] Otousan to Naisho ~Aru Daikazoku no Chichi to Musume Yuku Toshi Kuru Toshi Himehajime~
[Anthology] MoeStar BEAST Vol.3 [Digital]
[FEI] Sensei no Himitsu Jugyou | Sensei's Secret Lesson [English] [Lazarus H]
Tenshi no Kagai Jugyou Ch. 2
[Shunjou Shuusuke] Kojin Jugyou | Private Lesson (COMIC MUJIN 2012-08) [English] [darknight]
(CR31) [Studio Wallaby (Deep Purple '72)] Suu no Naisho!! -The secret of Su- (Vampiyan Kids)
Kagai Jugyou Sakuya Hen
[Keno Yantarou] Tanoshii Kagai Jugyou - Happy Extracurricular Lesson [Chinese]
[Natsuyasumi] Kagai Jugyou (Tamako Market)
[Syuuen] Kagai Jugyou
(C71) [Kurage no Candume (Yoshino)] Naisho! It's a Night Show! (Simoun)
(Shotaket 11) [Studio Rakkyou (Various)] Tsubasa x4 no Naisho (Naisho no Yorimichi) [English]
[Matsumoto Katsuya] Naisho no Mio Sensei | The secret Mio sensei (COMIC Masyo 2017-02) [English] [desudesu] [Digital]
[Musenmai] Naisho (COMIC AUN 2017-01) [Chinese]
(C78) [apricot (Anji, Kuroo)] Omote to Ura no Himitsu to Naisho. (Amagami)
(COMIC1☆3) [Human High-Light Film (Shiosaba)] Naisho no Honey (Cutey Honey)
[Umino Luka] Naisho no Zangyou
Hokentaiiku Jisshuu Jugyou ~Onnanoko no Karada no Shikumi Hen~
[ChildBox (Various)] Naisho no Asobi (Ojamajo Doremi)
[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~ [English] {Doujins.com}
[Minor Boy] Keiko Sensei no Kagai Jugyou - Keiko Sensei Series 1
(C83) [CIrcle Ohigetan (Ohigetan)] Ohigebon-35 Classmate Ochinchin Jugyou Sankan
[sho-tan] Taiiku no Jugyou
Sakurako Sensei no Tokubetsu Jugyou
Classmate to Ecchi Jugyou Ch. 9
(C57) [Studio Wallaby (Kokuden Kadotake, Shijuukara, Hontai Bai)] Shinobu no Naisho Love Hina Books (Love Hina)
[Activa (SMAC)] Yomako Sensei no Tokubetsu Jugyou (Tengen Toppa Gurren Lagann) [English] {fzid4}
(C94) [Tatsumaki Koutei (Takei Tsukasa)] Mifune-san to Producer ga Otsukiai Shihajimete Naisho no (THE IDOLM@STER CINDERELLA GIRLS)
[kedamono (Tori Hrami)] Naisho no Undoukai Second Season [Digital]
[Lightcoral (Tomi)] Naisho no Oyuugi Kai [Digital]
Riritama Hoshuu Jugyou! - Riritama Supplementary Lessons!
(COMIC1☆7) [Aroma Gaeru (Numahana)] Hamon Kyoushi no Setekina Jugyou (JoJo's Bizarre Adventure)
(C81) [CIRCLE ENERGY (Shin Shunkashuutou)] Sister Maria Sensei no Hachimitsu Jugyou (Boku wa Tomodachi ga Sukunai) [Digital]
(C88) [Nachtzug (eko)] Ofuro de Naisho (Kantai Collection -KanColle-) [Chinese] [哲学狗汉化组]
(CCTokyo132) [Kitei (Naoki)] Naisho Banashi (Kuroko no Basuke)
[ARI] Naisho No Hokenshitsu (COMIC Penguin Celeb 2015-03) [Chinese] [上古勤受荣誉呈献]
[Shinokage] Taiiku no Inokori Jugyou
(C93) [Mama ni wa Naisho (Plasma Beach)] Miwaku no Muscle Pose (Dragon Quest XI)
(COMIC1☆4) [TRIP SPIDER (niwacho)] Naisho no Omamagoto (Fate/Hollow Ataraxia) [English] [desudesu]
[Konohana] Naisho no Jikan | Secret Times (COMIC Megastore 2009-04) [English] [Hentai from Hell]
(C87) [Jaku Shouji Musho Shokun (Futaba Yae)] Naisho no Hakuchi Shuuri (Kantai Collection -KanColle-)
Naisho no Kagai Jugyou {Hennojin}
[Kanzaki Shirou] Yume no Kuni no Naisho Banashi
[AKIRA] Eve no Naisho Banashi 1
[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. 1-3 [English] {Doujins.com}
Classmate to Ecchi Jugyou Ch. 1
(C91) [Fujiya (Nectar)] Naisho na Shinomiya-san
(C71) [Pyonpyororin (Akoko.)] Ano... Naisho ni shite kudasai ne? (Suzumiya Haruhi no Yuuutsu) [English]
(C92) [666PROTECT (Jingrock)] Tenkousei JK Elf 3 Saishuushou -Houkago Yagai Jugyou -
On'na kishi no kagai katsudō (Mahou Shoujo Ikusei Keikaku
(HaruCC20) [Mikazuki Shokudou (Kurosawa Ayuki)] Aniki ni wa Naisho da yo? (Daiya no Ace)
[FEI] Sensei no Himitsu Jugyou Ch. 1-5
(C89) [Tatsumaki Koutei (Takei Tsukasa)] Lecia no Naisho Naisho no Chitsujo (Granblue Fantasy)
Jugyou ni Kyousei Rape Time ga Dounyuu Saremashita ~ Suki na Ko wo Hame Houdai! Kyousei Hame Jikan Start!
[Torajima-shi Kouhouka (Torajimaneko)] Builder to Fighter no Naisho Banashi (Gundam Build Fighters) [Chinese] [黑夜汉化组] [Digital]
(CR31) [Neko to Hato (Hatoya Mameshichi)] Himitsu no Tokubetsu Jugyou (Onegai Teacher)
[Katsura 24 Gou] Naisho ni Shite (COMIC Penguin Club Sanzokuban 2014-08) [Chinese] [漫の漢化組]
(C89) [Tatsumaki Koutei (Takei Tsukasa)] Lecia no Naisho Naisho no Chitsujo (Granblue Fantasy) [English] {Hennojin}
[Keno Yantarou] Owaranai Kagai Jugyou
Enoshima Sensei no Chou Zetsubouteki Zecchou Jugyou
[Oomichi Imuta] Naisho ni Shite ne | Keep this a Secret, okay (Futanarikko High!) [English] [UsagiTrans]
[FEI] Sensei no ♥ Himitsu Jugyou Ch. 1-8
(C89) [EX35 (Kamaboko RED)] Minna ni naisho no setting! (Bakusou Kyoudai Let's and Go!!)
[Dorachefu] Muchimuchi Kanojo no NTR Hoshuu Jugyou | NTR – Voluptuous Girlfriend's Supplementary Lesson (ANGEL Club 2018-07) [English] [seindryu] [Digital]
(COMIC1☆6) [Mama ni wa Naisho (Purukogi Beach)] Tetsu Momo MANEATER (Tekken)
On'na kishi no kagai katsudō sample
[Maruta] Boku to Kanojo no Hikakuteki Naisho no Nichijou Chapter 1 (English)
[Keno Yantarou] Tadashii Kagai Jugyou [Chinese]
(SC2017 Winter) [TwinBox (Hanahanamaki, Sousouman)] Kouen no Naisho na Koto (Kantai Collection -KanColle-) [Chinese] [花火汉化组]
(C90) [conezu step!+Ziggurat (Suzuki Akoni)] JK Yome Sakura no Yagai Jugyou
(COMIC1☆5) [Mama ni wa Naisho (Purukogi Beach)] GIGANTIC DIVA (King of Fighers)
[GOD Ryokutya (Bu-chan)] Papa ni wa Naisho yo? (Brave Beats) [Digital]
Rean Kyoukan no Tokubetsu Kagai Jugyou
[Monogusa Wolf] Naisho no Telephone Date
[Tachibanaya] Megmica-san to Kagai Katsudou (Meg and Seron)
(Gakuen Trial 1.5 Kagai Jugyou) [ZCC (Zakiko)] Hi ga Kurete (Super Danganronpa 2)
[Ameyama Telegraph (Ameyama Denshin)] Rokujou Junko no Haisetsu Kagai Jugyou [Digital]
[Motika] Naisho no Sakunyuu | Milking In Secret (ANGEL Club 2014-01) [English] [vaasi]
(Shota Scratch 31) [Koneko no Marionette (Kuonji Shutaka, Poron, Namao)] Naisho no Otogibanashi 2 [English] {Shotachan}
[Q] Kagai Lesson | Extracurricular Torture [Lesson] (Fujouri na Nyotai Kousoku) [English] [Risette] [Digital]
[Ookami Uo] (Ryuushutsu) JSJC Naisho no Jian Ch. 1-5 [Chinese]
Yomako Sensei no Yuuwaku Jugyou | Teacher Yomako's Temptation Teaching
[SAIGA dou] Otto ni Naisho de Kozukuri Takuhai Service Oshiharai wa Teisou Hikikae [English] [Fated Circle]
(Kouroumu 6) [04U (Misasagi Task)] Anoko nya Naisho (Touhou Project) [English] [CGrascal]
[Tamagoro] Boku to Oneesan no Naisho (COMIC Penguin Club Sanzokuban 2014-07) [English] [vaasi]
[Keno Yantarou] Tanoshii Kagai Jugyou
Mama ni Naisho Mama to Naisho
[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]
(C93) [J.D.World (Fumi Miyabi)] Onee-san ni wa Naisho ne (Kantai Collection -KanColle-) [English]