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[Sena Youtarou] Kannou no Hirusagari | A Sensual Early Afternoon (Kannou no Houteishiki) [English] [Decensored]

[Hiyoshi Hana] Kare to Imouto no Houteishiki | The Equation of Him and His Little Sister (COMIC Megastore 2012-08) [English] [The Lusty Lady Project]

Rina-chan Renai Houteishiki

(C61) [Bakeda Daigaku (Bakedanuki)] Maicching!! Ciel-sensei (Tsukihime)

[Kazakami Shun] Active Renai Houteishiki Official Visual Book

[Sena Youtarou] Kannou no Hirusagari | A Sensual Early Afternoon (Kannou no Houteishiki) [English] [QBtranslations]

[Angel.14] 夏娘 総集編 (オリジナル)

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[Azuki Kurenai] Midara no Houteishiki: The Equation of the Immoral

[Azuki Kurenai] [Full Color seijin ban] Midara no Houteishiki - The Equation of the Immoral Kanzenban

東方TSF2 華扇に憑依

Shoujo to Haikousha

Otouto Succubus-ka! Inma no Kyoudai Nyotaika Sakusen 1-2 español

[Arai Yoshimi] Jupiter ni Onegai | 向木星许愿 Ch. 2-5 [Chinese]

(THE VOC@LOiD M@STER 16) [Aiwa (kkc)] ○-○×(=・ω・=) (Vocaloid) [English]

Atatame no houteishiki

(C92) [Dekoboko Hurricane (Anza Yuu)] Shimamura Uzuki no Ecchi na Hon (THE IDOLM@STER CINDERELLA GIRLS)[Chinese] [Lolipoi汉化组]

(C78) [Nama Cream Biyori (Nanase Meruchi)] Mio-tan! 5 Azunyan to (K-ON!) [English]

[Anthology] Bishoujo Doujin Peach Club - Pretty Gal's Fanzine Peach Club 9 (Various)

(C74) [Momonga Club (Hayashibara Hikari)] Shoujo no Houteishiki - Girls of Equation

[88scones (Sakaki Tsui)] Ayaki-kun to Houteishiki [English] {Shotachan}

Chigiri to Musubi no Houteishiki | 契與結的方程式

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[Azuki Kurenai] Midara no Houteishiki - The Equation of the Immoral [English] [hen-toy]

(C72) [Kigeki Banzai (Suzuhara Kouki)] Daichi no Kurayami (Yes! PreCure 5)

[Hiyoshi Hana] Youma to Tsuya no Houteishiki (COMIC X-EROS＃17) [Chinese]

Kannou no Houteishiki (decensored)

(Reitaisai 14) [Chocolate Synapse (Shika Yuno)] Ichinichi Kanojo. (Touhou Project)

Kirei na Hito to H no Houteishiki

Hatsukoi Splash! Toranoana Kounyu Tokuten 4P Leaflet

[Momonga Club (Hayashibara Hikari)] Shoujo no Houteishiki - Girls of Equation [Digital]

(C93) [Hirojuu Renshuuchou (Hiroya)] Gensoukyou ni Tensei Shita no de Saimin Appli de Hoshiguma Yuugi o Kodomo no Tame nara Nandemo Shichau Mama ni Shite Yatta (Touhou Project)

[Azuki Kurenai] Midara no Houteishiki - The equation of the Immoral Ch. 1-2 [English] [hen-toy]

[Hiyoshi Hana] Chigiri to Musubi no Houteishiki - Equation of Chigiri & Musubi

[Momonga Club (Hayashibara Hikari)] Shoujo no Houteishiki - Girls of Equation [English] [SaHa] [Digital]

[Mugen Houteishiki (Mugen)] Shinkai Seikan (Kantai Collection -KanColle-) [Digital]

(SC61) [Zensoku Rider (Tenzen Miyabi)] Juukan Collection (Kantai Collection)

[Hiyoshi Hana] Chigiri to Musubi no Houteishiki (COMIC ExE 01) [Chinese] [無邪気漢化組]

[Hiyoshi Hana] Kare to Imouto no Houteishiki (COMIC Megastore 2012-08)

Watashi wa Maiban Guro Chin Katei Kyoushi ni... Tanetsuke Saretemasu 2

Natsu Yasumi

Kimusume Kanojo no Hatsujou Houteishiki

(C90) [AXZ (Kutani)] Angel's stroke 94 Kairakujou no Ayame!! (Koutetsujou no Kabaneri)

[NCP] Houkago Saimin SEX-bu

Futago Koushi no Meru to Ruru

[Hiyoshi Hana] Neko to Watashi no Houteishiki | The Equation of the Cat and Me (COMIC Megastore 2012-02) [English] [The Lusty Lady Project]

[Sena Youtarou] Kannou no Christmas Eve (Kannou no Houteishiki) [English] [Team Koinaka]

(C87) [Mugen Houteishiki (Mutsu Minato)] MOSI×MOSI (Kantai Collection -KanColle-)

[Kihiru] Kirei na Onna to H no Houteishiki [Digital]

(C70) [Neko Kinryouku (NekoNeko)] NekoNeko Otona Houteishiki

[Intoku.info (Endou Hiroto)] Aishite! Homun 2 [Digital]

Eien no Houteishiki - Eternal Equation Chapter: 1

The Pet Shop

(C96) [CROSS HEARTS (Ayase Hazuki)] LOVE MARRIAGE (Kantai Collection -KanColle-)

[Kinako Gyuu Nyuu (Tomoharu)] Koi Suru Houteishiki (Ginga e Kickoff!!)

[Umi no Sachi (Suihei Sen)] Watashi no Kare wa Incubus | 我的『他 』是夢魔 [Chinese] [兔司姬漢化組] [Digital]

Interspecies Reviewers - Volume 2

(C57) [Otonano Do-wa (Various)] Otonano Do-wa Vol. 11

Midara no Houteishiki - The Equation of the Immoral Kanzenban

Nurume no Houteishiki.

(Reitaisai 13) [Takeya (Taketora Suzume)] Jinrou Hakusho (Touhou Project) [English]

Neji to Nejiana no Houteishiki

COMIC Mugen Tensei 2023-02

[Akuochisukii Sensei] Akuochisukii Sensei no Heroine Haiboku no Houteishiki - Equation of Heroine's defeat by Mr. Akuochisukii | 女性角色敗北的方程式 [Chinese]

(SC2015 Summer) [ONEGROSS (144)] RIESZ&FASHION7 (Seiken Densetsu 3)

Rina-chan Renai Houteishiki

Neji to Nejiana no Houteishiki

[Hiyoshi Hana] Chigiri to Musubi no Houteishiki - Equation of Chigiri & Musubi [Digital]

[Akuochisukii Sensei] Akuochisukii Sensei no Heroine Haiboku no Houteishiki - Equation of Heroine's defeat by Mr. Akuochisukii [Digital]

[Sanzen Emily] NTR Saikin, Tsuma ga Iroppoi [Chinese]