(C81) [Sukapon-Do (Kagawa Tomonobu, Yano Takumi)] Zerogumi Kagai Jugyou (Final Fantasy Type-0)
Gaman Dekinai Kagai Jugyou
(C82) [THE FLYERS (Naruse Mamoru)] Ako-chan to Naisho no XX + plus (Saki Achiga-hen)
[Hasemi box (Hasemi Ryo)] Futari to Shota no Naisho Graffiti (Koufuku Graffiti)
(C85) [Nipopo Crisis (Genka Ichien)] Tanoshii Koto o Naisho ni Shiyou. Yousumi Ban (Various)
[Matsumoto Katsuya] Naisho no Mio Sensei | The secret Mio sensei (COMIC Masyo 2017-02) [English] [desudesu] [Digital]
(CR31) [Studio Wallaby (Deep Purple '72)] Su no Naisho!! -The secret of Su- (Vampiyan Kids)
[Usi] Otto ni Naisho de Ajimi Shite Ch.1-7
[BOSS Chin] Naisho no Ota x Bitch (COMIC Shingeki 2012-10) [English] [desudesu] [Digital]
[Yan-Yam (Yan-Yam)] Inkou Kagai Jugyou (Onegai Teacher)
Kenpeitai ni wa Naisho da yo!
[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]
[Rokuichi] Ririn-san no Naisho no Kao to Daiji na Oheya (COMIC HOTMILK 2018-07) [Chinese] [無邪気漢化組] [Digital]
AIBIKI. Naisho banashi. 3 Ch. 8
[Nohri Isawa] Naisho no Kansatsu Nikki (Secret Observation Journal) [English] [Mistvern]
Naisho no Hanashi | A Story About a Secret
Naisho no Seitokai Shitsu
Okaa-san no Naisho
Naisho no IV Satsuei-kai
[Keno Yantarou] Tanoshii Kagai Jugyou
[Kamiya Ogawa] Mama ni Naisho Mama to Naisho (COMIC Penguin Club Sanzokuban 2018-11) [Digital]
Kouu-sama ni wa Naisho
[Hasemi_box (Hasemi Ryo)] Futari to Shota no Naisho Graffiti (Koufuku Graffiti) [Chinese] [靴下漢化組] [Digital]
Ore-tachi Futari no Naisho-goto!
[Tokunaga Poosaku] Himitsu no Kagai Jugyou
(COMIC1☆5) [Shimoyakedou (Ouma Tokiichi)] Naisho no Mahou (Puella Magi Madoka Magica)
Boku to Kanojo no Hikakuteki Naisho no Nichijou Conclusion
(C71) [Pyonpyororin (Akoko.)] Ano... Naisho ni shite kudasai ne? (Suzumiya Haruhi no Yuuutsu) [English]
(C94) [Kurumi Namiki (Mita Kurumi)] Atago-san to Naisho no Ecchi (Kantai Collection -KanColle-)
(Dai-134-Ki Bunbunmaru. Shinbun Tomo no Kai) [Nekonome (Hikanyan)] Aya-kun to Momiji Onee-chan no Naisho no Jikan (Touhou Project)
[kedamono (Tori Hrami)] Naisho no Undoukai Second Season [Colorized] [Digital]
Shougatsu Gyouji Naisho no Oshiire Sex
[blue killer (Doku Denpa)] Naisho no Yodare Sex [Digital]
Naisho de! Twins
Kare ni wa Naisho ~Sex Namahaishin~
(C91) [Fujiya (Nectar)] Naisho na Shinomiya-san
(C71) [Ohtado (Oota Takeshi)] Naisho da yo! Mahou no Club Katsudou (Sasami Magical Girls Club)
Boku to Kanojo no Hikakuteki Naisho no Nichijou Chapter 1
Naisho na Shinomiya-san | The Secretive Shinomiya-san
[774] Naisho no Hentai Sex
(C93) [J.D.World (Fumi Miyabi)] Onee-san ni wa Naisho ne (Kantai Collection -KanColle-) [Chinese] [无毒汉化组]
(Puniket 23) [Suitekiya (Suitekiya Yuumin)] Naisho no HONya-san (Watashi no Ouchi wa HONya-san)
(CINDERELLA FESTIV@L) [Aozora Shoujo (Shirane Taito)] Naisho no Gao Gao Ecchi (THE IDOLM@STER CINDERELLA GIRLS)
[Hanpera] Katei Kyoushi no Kagai Jugyou | The Home Tutor's Extracurricular Lesson (Ane Chichi) [English] [ultimaflaral]
Kouen no Naisho na Koto
(CR31) [Studio Wallaby (Deep Purple '72)] Suu no Naisho!! -The secret of Su- (Vampiyan Kids)
[Asahina Makoto] Naisho no Wareme Lesson
Naisho no Kagai Jugyou Nyuumonhen
(CINDERELLA FESTIV@L) [Aozora Shoujo (Shirane Taito)] Naisho no Gao Gao Ecchi (THE IDOLM@STER CINDERELLA GIRLS) [English]
(COMIC1☆8) [TriaL3 (Various)] Naisho no Imouto Ecchi
(Naisho no Jikan) [Apricot Sirup (Hi~mosu, Marui)] Doki Doki Kodomo Time (Kodomo no Jikan)
(CR35) [Chokudoukan (Hormone Koijirou, Marcy Dog)] Ink Sensei no Ikenai Kagai Jugyou - Teacher Ink's an Extracurricular Erotic Lecture (Moetan)
Osananajimi ga Naisho de Yatteiru SNS o Mite Kofun Shite Shimau Ore!!