(C73) [Hinaprin (Ikuta Takanon)] Ookami no Hatsujouki | Wolf and the Rutting Season (Wolf and Spice) [English] =Strange Companions=
[Aa Doushiyou (Pi-ko)] Ore no Imouto Tachi ga Hatsujouki na Wakega nai | There's No Way My Little Sister And Her Friend Are In Heat! (Ore no Imouto ga Konna ni Kawaii Wake ga Nai) [English] [Zettai Ryouiki] [Decensored] [Digital]
(Meikasai 11) [Kingyo Origin (Kayama Rim)] Chen-chan no Hatsujouki (Touhou Project)
(C77) [THIRD BRAND (Katsumata Kazuki)] Hatsujouki no Sugoshikata. (Anyamaru Tantei Kiruminzoo)
[Mama ni wa Naisho (Plasma Beach)] Luscious Beef Cake PLATINUM (Tekken)
Hatsujouki o Mukaeta Kedakai Elf ga Netorareru
[Takano Yuki] Minna Hatsujouki! [Chinese]
[Anthology] MoeStar BEAST Vol.3 [Digital]
(SC55) [Gachapin Mukku. (Mukai Kiyoharu)] Ririchiyo-sama no Naisho no Oshigoto (Inu x Boku SS)
(SC33) [Human High-Light Film (Shiosaba)] Honey no Naisho 3 (Cutey Honey)
Mazoku Hime Fleur no Hatsujouki
[Musashimaru] Touzen, Imouto ni wa Naisho de [Digital]
[Tamagoro] Boku to Oneesan no Naisho (COMIC Penguin Club Sanzokuban 2014-07) [English] [vaasi]
Naisho na Shinomiya-san
(Reitaisai 12) [Puku Puku Manjuu (Lenvolt)] Chen-chan wa Hatsujouki (Touhou Project)
(C90) [Upagoya (Endori)] Senpai ni wa Naisho ssu yo? (Granblue Fantasy)
Oya ni Naisho no Umi no Iedex
[Leafy] Mama ni Naisho no Hatsujouki
[Haruiro Fudepen (Satsuki Suzuran)] Nanto Naisho no (Senki Zesshou Symphogear) [Digital]
(Shuuki Reitaisai) [Sigamitsuki Mizuhiki (Noshigami)] Izayoi Sakuya no Hatsujouki III (Touhou Project)
Inumimi Oujo no Wafu Wafu Hatsujouki 2
(SC49) [Baka to Hasami (Tsukai You)] Naisho no Tsuboeri Himitsu no Itsuki (Heart Catch Precure!)
[Usi] Otto ni Naisho de Ajimi Shite Ch. 1-9
[TLB] Otousan to Naisho ~Aru Daikazoku no Chichi to Musume Yuku Toshi Kuru Toshi Himehajime~
(C88) [Gadget (Chobariki Mitsuo)] Naisho no Beit no Susume (Yama no Susume)
[kedamono (Tori Hrami)] Naisho no Undoukai | 运动日的秘密 [Chinese] [本子社汉化] [Colorized] [Digital]
(C91) [Brilliant Thunder (Yumeno Tanuki)] Oya ni Naisho no Iedex - Fuyuyasumi no Toode Hen
[Babymaker (Beco)] Naisho no Kozukuri 2
(SC32) [Tololinco (Tololi)] Markl to Sophie no Naisho no Ohanashi | Secret Story of Markl and Sophie (Howl's Moving Castle) [English] [Fated Circle]
(COMIC1☆7) [Bakunyu Fullnerson (Kokuriu)] Naisho no Oshigoto (Bakemonogatari)
Kanojo ga Hatsujouki nanoni Uwaki Shite Tewi-chan to Sex Shita | 明明女朋友在发情期还要和帝酱乱搞做爱
[anemone_lab (anemone)] Boro Apart de Hatsujouki Succubus to Bed ga Dorodoro ni Naru made Suru
[Agata] Naisho no Kakurenbo (COMIC Megamilk Vol.18)
[Pirates Patrol (Otokawa Kazuki)] Naisho no Omorashi [Digital]
Minna Hatsujouki! | 全員發情期!
[Rokuichi] Ririn-san no Naisho no Kao to Daiji na Oheya | Ririn-san's Secret Expression and Her Precious Room (COMIC HOTMILK 2018-07) [English] [Stupid Beast] [Digital]
(C89) [Jagabata (Oimo)] Naisho no Futarikiri (PriPara) [English] {/u/ scanlations}
Sono Classmate Hatsujouki ni Tsuki
(Ikai Toshi no Arukikata 2) [ayafujii private circle (Fujii Aya)] Nikoniko Nyannyan ~Leo-kun ga Hatsujouki ni Natte Taihen na Koto ni~ (Kekkai Sensen)
Naisho no Ohime-sama | The Princess' Secret =TLL + mrwayne=
(C79) [Human High-light Film (Shiosaba)] Naisho no Ayanami (Neon Genesis Evangelion)
(C93) [Yohsyuan (Son Yohsyu)] Martina-san wa Hatsujouki | Martina in Heat (Dragon Quest XI) [English] =TLL + Fucked Silly=
(C73)[Alpha to Yukaina Nakamatachi] Naisho no Trap (Quiz Magic Academy)
(HaruCC18) [Mm. (Moto)] Shin-chan ga Hatsujouki ni Narimashita. (Neon Genesis Evangelion) [English] [SeekingEyes]
[Boss Chin (Esecool)] Naisho no Ota x Bitch (COMIC Shingeki 2012-10)
[broiler] Tama-chan (Nekomimi Musume wa Hatsujouki) [English] [oni no onii-chan]
(C88) [MAPLER (Maple)] Tomodachi ni mo Naisho no Koto [Chinese] [嗶咔嗶咔漢化組]
(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]
[Studio Wallaby (Various)] VITAMIN-B5 1/3 Ruri Ruri Naisho no Gakuen Nikki (Kidou Senkan Nadesico)
[Knuckle Curve] Junjou Hatsujouki | Pure Hearted Mating Season Ch. 1 [English]
(COMIC1☆8) [TriaL3 (Various)] Naisho no Imouto Ecchi [Chinese] [佳奈助汉化]
Shota to Dousei Shitetara Hatsujouki ni Haicchaimashita
(C88) [Akuten Soushin (Kokutou Nikke)] Tenryuu Onee-chan to Naisho no Yasen Enshuu!! (Kantai Collection -KanColle-)
(Ugetsusai) [Schwester (Inasaki Shirau)] Naisho no Reisen (Touhou Project)
(C85) [Yatsufusa Koubou (Yatsufusa Hajime)] Fuujin Shoujo no Hatsujouki | Wind God Girl's Mating Season (Touhou Project) [English]
Senpai ni wa Naisho ssu yo | 선배에겐 비밀임다
Mazoku Hime Fleur no Hatsujouki 3
Hong Meiling no Hi - Hatsujouki
(C93) [J.D.World (Fumi Miyabi)] Onee-san ni wa Naisho ne (Kantai Collection -KanColle-) [Chinese] [无毒汉化组]
(C88) [Decoppachi (Hidiri Rei)] Naisho no IV Satsuei-kai (THE IDOLM@STER MILLION LIVE!)
(C86) [Mama ni wa Naisho (Plasma Beach)] Kinniku Chocolate (Samurai Spirits)
[Pin-13 (Juusangatsu)] Futari no Naisho (Kizuato) [Digital]
Tewi-chan wa Mannen Hatsujouki
[Root 12-hedron (Landolt Tamaki)] Zutto Naisho ni Shiteta kedo, Jitsu wa Watashi, Haeteru no. [Digital]
(C91) [Kitsune (Tachikawa Negoro)] Jiiji ni wa Naisho ni Shite ne (Final Fantasy XV)
[Studio Wallaby (Deep Purple '72)] Arashi no Naisho, Aiko no Himitsu (Gad Guard)
(C88) [brilliant thunder (Yumeno Tanuki, Fue)] Oya ni Naisho no Iedex
[Morishima Kon] Naisho No Gohoushi (COMIC Tenma 2016-04) [Chinese] [漢化組漢化組]
[C.R's NEST (C.R)] Yukki- Hatsujouki. Dash Upper (Dog Days) [Digital]
(Houraigekisen! Yo-i! 25Senme) [Re:Serva (Miooonu)] Hag Neko! Hatsujouki Hen (Kantai Collection -KanColle-)
[Anthology] H na Kanojo to Naisho no Shutter Chance [Digital]
(C90) [5th Library (Valiant)] Hime-sama Usagi no Hatsujouki (BLAZBLUE)
Nenjuu Hatsujouki no Sakura-san
(C86) [Go-Go-Merry-Go-Round (Kasai Ema)] Naisho no Natsuyasumi. (Neon Genesis Evangelion)
Oya ni Naisho no Iedex - Fuyuyasumi no Toode Hen
(C85) [Yatsufusa Koubou (Yatsufusa Hajime)] Fuujin Shoujo no Hatsujouki (Touhou Project)
[Horihone Saizou] Naisho [ENG]
(Reitaisai 14) [Rocket Chousashitsu (Koza)] Kazami Yuuka to Naisho Play (Touhou Project) [Chinese]
Rem Nyan wa Hatsujouki {doujins.com}
[Usi] Otto ni Naisho de Ajimi Shite 1
[Urutsu] Teach Tea Songs (Shiroyuri Girls Love Paradise) [English] [yuriproject]
Yousei no Hatsujouki
Fennec Musume no Hatsujouki
(C88) [Decoppachi (Hidiri Rei)] Naisho no IV Satsueikai (THE IDOLM@STER MILLION LIVE!) [Chinese] [MISO个人汉化]
Jitsuwa Motto Mannen Hatsujouki Na Tokutai-sei no XXXna Nichijou
(C84) [Totsugeki! Tonarino Jo-Galbi (Tsunsuki)] Hatsujouki no Sugoshikata (Touhou Project)
(SC31) [P-Forest (Hozumi Takashi)] Otome no Naisho Tomoe-chan to Iroiro... (Mai-Otome)
[Low] Hajimete no Hatsujouki Ch. 1-3 [English] [MrBubbles]
(Puniket 23) [Suitekiya (Suitekiya Yuumin)] Naisho no HONya-san (Watashi no Ouchi wa HONya-san)
Ore no Imouto wa Tsuki 1 de Hatsujouki ga Kuru.
[XX-ya tte koto wa Naisho da. (Naisho da.)] Doremi-sama Doremi-sama Doremi-sama (Ojamajo Doremi)
(C45) [First Class (Various)] Tenchi Ranyou! Hatsujouki (Tenchi Muyou!)
(C86) [Asaki Blog Branch Office (Asaki Takayuki)] Fujiyama-san no Hatsujouki | Fujiyama-san's Mating Season (Fujiyama-san wa Shishunki) [English] [YQII]
(C89) [Gossipgothic (Shishiji)] Kurashiki-sensei wa Hatsujouki 2 (Fujiyama-san wa Shishunki) [Chinese] [黑条汉化]
[Usi] Otto ni Naisho de Ajimi Shite Ch.1-5
Kizune no Hatsujouki Iri
(COMIC1☆4) [Human High-Light Film (Shiosaba!)] Naisho no Makinami (Rebuild of Evangelion)
[Watanabe Wataru] Naisho ni Shite ne | Make it secret (English)
[Rokkaku Yasosuke] Naisho Zuma (Comic Shitsurakuten 2013-02) [English] [Facedesk]
[Ookami Uo] (Ryuushutsu) JSJC Naisho no Jian Ch. 1-5 [Chinese]
(C65) [Naisho no Tsubomi (Unazuki Renge)] Naisho no Tsubomi (Various)
Kurashiki-sensei wa Hatsujouki Soushuuhen FINAL | Kurashiki Sensei's Mating Season Final Ch. 1
[kedamono (Tori Hrami)] Naisho no Undoukai Second Season [Colorized] [Digital]
(C95) [Koban Dou (Sameda Koban)] Oni-Musume-chan wa Hatsujouki![Chinese] [Lolipoi汉化组]
Mash no Hatsujouki to Shitsukekata
[Jingrock] Shishunki wa Hatsujouki - Adolescence is a sexual excitement period. [Decensored]
(COMIC1☆9) [Atelier Lunette (Mikuni Atsuko)] Naisho Nano! -Haruhara-ke Sanshimai Monogatari- 2
[Ao Banana] Hatsujouki Caenis ga Shota Guda o Gyaku Rape shichau Manga | A Book in Which Horny Caenis Reverse Raped a Shota Guda (Fate/Grand Order) [English] [Coffedrug]
(Reitaisai 13) [YuKi-IRo (Yukiusagi.)] Hatsujouki no Pierrot (Touhou Project)
[Misao.] Minamo no Naisho | Minamo's Secret (Hajimete Janai yo?) [English] [Rin]
(SC15) [Chuuni+OUT OF SIGHT (Kim Chii)] Onee-chan to Naisho 2 Ashita Biyori
[Kitsuneya (Leafy)] Chibikko Eirei to Naisho no Okusuri Techou - Young lady hero secret medicine notebook (Fate/Grand Order) [Digital]
[Studio Wallaby (Kokuden Kadotake, Shijuukara, Leopard)] Shaorin no Naisho (Mamotte Shugogetten!)
[Yuzuponz (Kikira)] Inumimi Seikatsu ~Hatsujouki no Itoko Namahame Tokubetsu Jugyou~ [Digital]