(Reitaisai 14) [Rocket Chousashitsu (Koza)] Kazami Yuuka to Naisho Play (Touhou Project) [English] [desudesu]
Kyou-sei Kagai Shidou
(Geinoujin wa Card ga Inochi! 4) [Colomonyu (Eromame)] Naisho no Nail (Aikatsu!) [2nd Edition]
[Maruta] Boku to Kanojo no Hikakuteki Naisho no Nichijou Chapter 2 (English)
[Babymaker (Beco)] Naisho no Kozukuri 2 | Secret Lovechild 2 [English] [MintVoid]
[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}
(C92) [Atelier Lunette (Mikuni Atsuko)] Naisho Nano! -Haruhara-ke Sanshimai Monogatari- 3 [English]
Minato-sensei no Kagai Jugyou
[Ichinomiya Yuu] Naisho no Complex (COMIC Anthurium 036 2016-04) [Chinese] [黑条汉化]
Musuko no Tameni Tannin to SEX… Jugyou Sankan de Ikasenaide!
(C90) [Kaminari-neko (Eitarou)] Miho to Anzu no Naisho no Himegoto (Girls und Panzer) [Chinese] [一匙咖啡豆汉化组]
[Agata] Naisho no Kakurenbo | Hide And Seek With Friend's Mom (COMIC Megamilk Vol. 18) [English] [vaasi] [Decensored]
(Gakuen Trial 1.5 Kagai Jugyou) [ZCC (Zakiko)] Hi ga Kurete (Super Danganronpa 2)
[Amatarou] Futari de Jugyou wo Nukedashite ♡ | Sneaking out of Class Together [English] {YQII}
(C89) [Jagabata (Oimo)] Naisho no Futarikiri (PriPara) [English] {/u/ scanlations}
(Shotaket 11) [Studio Rakkyou (Various)] Tsubasa x4 no Naisho (Naisho no Yorimichi)
Tenshi no Kagai Jugyou Ch. 9
[Konohana] Naisho no Jikan (COMIC Megastore 2009-04) [Chinese]
(C62) [SimaSima System, Nagisawaya (Nagisawa You)] Sakura no Naisho Kawara Ban Sono 4 (Cardcaptor Sakura)
[Garakuta Shoujo (Miito Shido)] Kanojo wa Chou Yuumei Geinoujin... Soshite Boku ni Naisho de AV Joyuu Satomi-Satona Gojitsudan 3
(C70) [ENERGYA (Russia no Dassouhei)] Asahina Mikuru-sensei no Tokubetsu Jugyou (Suzumiya Haruhi no Yuuutsu)
Hageshii Kagai Jugyou
[Nekomaru Rentarou] Naisho no Jugyou (U-148 cm.) [Chinese] [我是肛♂蛋!不是 融⚥合!] [Digital]
(C94) [Critical Hit! (Zetz)] Mutsuki no Naisho (Azur Lane)
(C78) [Human High-light Film (Shiosaba!)] Naisho no Asuka (Neon Genesis Evangelion)
(C88) [H-SQUAD (Guglielmo)] Zenra de Suiei no Jugyou!! | Naked Swimming Class!! [English] =LWB=
[Leafy] Mama ni Naisho no Hatsujouki
[Watanabe Wataru] Naisho ni Shite ne
[Light Pink] Yes! Kagai Katsudou (Yes! Precure 5)
Kagai Jugyou | Delivery love
(COMIC1☆8) [Nipopo Crisis (Genka Ichien)] Tanoshii Koto o Naisho ni Shiyou. Kanzenban (Zettai Muteki Raijin-Oh)
[Anthology] Megane Loli Choukyou Jugyou!! ~Otonashii Megane Lolikko ni Muriyari Dekachin Sounyuu~
(COMITIA123) [Yukan high Zakura (Chieko)] Bijutsu Jugyou Dessin Model
Rize Sensei to Himitsu no Jugyou
(Panzer Vor! 11) [Nazunaya Honpo (7zu7)] Erika no Naisho. (Girls und Panzer)
[FEI] Sensei no Himitsu Jugyou | Sensei's Secret Lesson Ch. 1-5 [English] [Lazarus H]
(C88) [THE FLYERS (Naruse Mamoru)] Maekawa-san to Naisho no XX (THE IDOLM@STER CINDERELLA GIRLS)
[Ningen tte Iina (Ningen)] Onee-sama ni wa Naisho desu yo? (Kantai Collection -KanColle-) [Digital]
[Sasamori Tomoe] Yuutousei Ni Hitsuyou Na Jugyou (COMIC HOTMiLK 2014-05) [Chinese] [無毒気漢化組(無邪気X无毒)]
Muchimuchi Kanojo no NTR Hoshuu Jugyou | NTR – Voluptuous Girlfriend's Supplementary Lesson
(C77) [Zi, 66 no Oka (Mutsuki Ginji, Mu Mu Munou)] Naisho no Zange Shitsu 1 (Kannagi)
[2B (MANA-KO)] Naisho no Haruna-chan (To LOVE-Ru) [Digital]
[Abe Inori] Ninshin Inokori Jugyou (ANGEL Club 2016-09) [Chinese] [Sona5566漢化] [Digital]
[Torajima-shi Kouhouka (Torajimaneko)] Builder to Fighter no Naisho Banashi (Gundam Build Fighters) [English] {Shotachan} [Digital]
[Natsuyasumi] Kagai Jugyou (Tamako Market)
[Keno Yantarou] Hazukashii Kagai Jugyou | 害羞的課外授業 [Chinese]
[FEI] Sensei no Himitsu Jugyou | Sensei's Secret Lesson Ch. 1-4 [English] [Lazarus H]
Ikinari Yashuu Kyouju An An Jugyou
[Kuronisiki (Takaharu)] Onee-sama-tachi niwa Naisho de Senkan ni Narimasu (Kantai Collection -KanColle-) [Chinese] [koolo個人漢化] [Digital]
[Katsurai Yoshiaki] Amatsuka Gakuen no Kaikan Jugyou (COMIC X-EROS #37)
[Human High-Light Film (Nise Tsuruta Hirohisa)] Honey no Naisho 2 (Cutey Honey)
[Kitakata Kuniaki] Himitsu no Keijiban H na Onna no Naisho Banashi [English] {Coff66 & Funeral of Smiles}
[Ue ni Aru Mikan (Reitou Mikan, Amulai)] Dennou Sekai ni Torawarete ~Onna Avatar de Seihoushi Jugyou, Uketemasu~[Digital]
(Shota Scratch 25) [Yabure Kabure (Agemon)] Ogibo-san niwa Naisho desu. (Fullmetal Alchemist)
(C91) [Anmitsu Ryokan (Yoru Yoru)] Naisho dakara ne (Sengoku Collection)
(C74) [Naruho-dou (Naruhodo)] Sekai Ichi Uke Tai Anko no Jugyou (Naruto) [English] {doujin-moe.com}
[kedamono (Tori Hrami)] Naisho no Undoukai [English] {Shotachan} [Colorized] [Digital]
[Rivajima (Yajima Index)] Isuzu no Naisho Banashi (Amagi Brilliant Park) [Digital]
[Kawamura Tsukasa] Naisho ni Shitai Juu no Monogatari [Digital]
(C92) [666PROTECT (Jingrock)] Tenkousei JK Elf 3 Saishuushou -Houkago Yagai Jugyou - [Chinese] [无毒汉化组]
Sekaiichi Uketai Anko no Jugyou
[Wakaba Circle] Jugyou o Sabotta Shoujo ga Tannin ni Hokenshitsu de Okasareru
(C86) [Mama ni wa Naisho (Plasma Beach)] Kinniku Chocolate (Samurai Spirits)
(C78) [Mama ni wa Naisho (Purukogi Beach)] Exquisite Chocolate (Dragon Quest IV)
"Zettai Goukaku" Yareru! Shingakujuku Juken Stress Hatsujou Joshi o Tokubetsu Jugyou de Hamemakuri
[Aichi Shiho] Okaa-san ni wa Naisho (Otokonoko HEAVEN Vol. 25 DMM Tokubetsu Ban) [Chinese] [瑞树汉化组] [Digital]
(Kouroumu 6) [04U (Misasagi Task)] Anoko nya Naisho (Touhou Project) [English] [KageSennin]
Kagai Lesson
Hajimete no Jugyou Sankan
(C81) [CIRCLE ENERGY (Shin Shunkashuutou)] Sister Maria Sensei no Hachimitsu Jugyou (Boku wa Tomodachi ga Sukunai) [Digital]
(C88) [MAPLER (Maple)] Tomodachi ni mo Naisho no Koto [Chinese] [嗶咔嗶咔漢化組]
(C91) [Fujiya (Nectar)] Naisho na Shinomiya-san
(C86) [Hyogetsu (Momonoki Fum)] Riko no Kagai Jugyou (To LOVE-Ru)
(C88) [brilliant thunder (Yumeno Tanuki)] Oya ni Naisho no Iedex
[Usi] Otto ni Naisho de Ajimi Shite Ch.1-7
(COMIC1☆9) [Shiratamaco (Shiratama)] Naisho no Passion - The Secret Passion (PriPara)
(C83) [Ameyama Telegraph (Ameyama Denshin)] Rokujou Junko no Haisetsu Kagai Jugyou
Namaikikko ni Kyousei Ikiiki Jugyou
[Oozora Kaiko (Kaiko)] Papa ni wa Naisho no Boshi no Fureai [Chinese] [某三人汉化组]
Kawakami Sensei to Futaba no Himitsu Kojin Jugyou
[Atelier Hinata (Hinata Yuu)] Hoshuu Jugyou bu Seikatsu Kiroku | 补习授业部性爱记录 [Chinese] [童田明治在坐月子汉化组]
(SC5) [Studio Wallaby (Deep Purple '72, Kura Oh)] Doris no Naisho (D4 Princess)
(C81) [TIES (Takei Ooki)] Kobato no Naisho. (Boku wa Tomodachi ga Sukunai)
(C91) [moriQ (Mori Airi)] Rem to Naisho na Koto Shimasen ka? (Re:Zero kara Hajimeru Isekai Seikatsu)
[Ookami Uo] (Ryuushutsu) JSJC Naisho no Jian Ch. 1-5 [Chinese]
[Studio Claim] Havayama niwa Naisho... (Urusei Yatsura)
[Koari] Naisho no Hokenshitsu (Seifuku Musou Houkago Tokubetsu Koushuu Hen) [Decensored]
[Rokuichi] Ririn-san no Naisho no Kao to Daiji na Oheya (COMIC HOTMILK 2018-07) [Chinese] [無邪気漢化組] [Digital]
Kyou mo Mata Katei Kyoushi ga Kite Kyousei Mesu Ochi Saimin Jugyou o Suru Hi
(C92) [megalodon (Mezashi Gohan)] Albion Gakuen Himitsu no Jugyou (Granblue Fantasy)