It's A Love Triangle Ricchan!
[Kityune Uta (Kityune) Sanae-san Paruparu (Touhou Project) [Digital]
(C84) [Triangle! (Various)] Shoushika Taisaku de Akihabara ga Nakadashi Tokku ni Shitei Saremashita
(C92) [Himitsukessya Usagi (Dancyo)] Jubaku Kanojo 2 [Chinese] [Lolipoi汉化组]
(C92) [Hachimitsu Romance (Eno Yukimi)] Kimi to Boku dake no Amai Jikan (Granblue Fantasy) [English]
(C68) [2CV.SS (Asagi Yoshimitsu)] Inamorato Prediletto 3 (Final Fantasy VII Advent Children, Rumble Roses)
(COMIC1☆11) [Ashima Sandou (Ashima Takumi)] Gabriel no Himitsu no Shiren (Granblue Fantasy)
(Ningen Janai R2) [Triangle! (Maple)] Seieki Daisuki Rui-chan no Semeseme Ningen Choukyou Nikki 2 [English] {doujins.com}
(SPARK9) [NICO (Kojima)] Himitsu no Are. (Free!) [English] [Carrot-Bunny]
Himitsu no Mamoritai Katsudou
[Naito Loveca] Himitsu (Juicy No. 13 2016-04) [English] {NecroManCr}
[Naruse] Himitsu no Oningyou Asobi [Digital]
[Mikami Cannon] Mayo-san no Himitsu no Kao (Zecchou Yokkyuu) [Chinese] [黑条汉化]
A good girl's panties chapter 1
[Nakayohi Mogudan (Mogudan)] Kanojo-tachi no Himitsu Oekakibon Vol:02 (Various) [English] [Trinity Translations Team]
(C90) [Cloud Palette (Akanagi Youto, Kuroyume Naoto)] Watashi to Himitsu no Gishiki Shimasen ka? (Touhou Project)
[complete box (Hatakeyama Tohya)] Futanari Elf to Himitsu no Jikken
Love Triangle 4
Jun-ai Kajitsu 2006-03
[Yamamoto Kumoi] Pitiful Lamb Diary (Marble Cake) [English] [B.E.C. Scans]
[Koyanagi Royal] Nozomu Triangle! (COMIC Megastore 2009-08) [English] [kaya83]
(Puniket 35) [Tori no Ya (Mashikodori)] Nozomi-chan Ganbaru! (Kamisama Minarai Himitsu no Cocotama)
(C92) [Himitsukessya Usagi (Dancyo)] Jubaku Kanojo 2
(C77) [High Risk Revolution (Aizawa Hiroshi)] Himitsu Nene no Himitsu (Love Plus)
(C69) [Studio Himitsukichi (Hasegawa Yuuichi)] Fallen Angel Dora 2 Colosseum
Muchimuchi Okaasan no Himitsu no Daietto Sakusen, Himitsu no 〇〇〇 Sakusen
(C93) [Takaneko (Takineko)] Himitsu Tomodachi Takane vol. 2 (THE IDOLM@STER)
[Nohara Hiromi] Suhada-teki Bishoujo 1 -Watashi no Himitsu... Mitai? Hen- [Chinese] [紫色老太婆个人汉化]
[Koyanagi Royal] Nozomu Triangle! (COMIC Megastore 2009-08) [English] [Faytear] [Decensored]
[Shinnosuke] Kan Nao-chan no Himitsu no Dansu Tokkun ( ※ R - 18) (Persona 4)
[Andou Hiroyuki] Daniku Triangle Fight! [English] [N04h] [Digital]
[Metal Owl] Bellows no Himitsu (Suisei no Gargantia) [English]
[Hasemi box (Hasemi Ryo)] Futari to Shota no Himitsu Seikatsubu (Gakkou Gurashi!) [Digital]
[Honey Lounge (Hachimitsu)] Imouto >>> Ani [English] {Dsojourn}
[Maltese (Runrun)] Eiketsu Yuusha no Himitsu Arbeit | The Hero‘s Secret Side-Job (The Legend of Zelda) [English] [Jashinslayer] [Digital]
Himitsu no Futari Futari no Himitsu
Hot Triangle ch.1
[Akuten Soushin (Kokutou Nikke)] Momiji Onee-chan to Himitsu no Otomari Ecchi (Touhou Project) [Digital]
[Watanabe Wataru] Himitsu no Omoide (Bakunyuu Dou Deshou?) [English] [Fated Circle]
[Sano Takayoshi] Kazamidori Triangle Vol.3
[Katou Jun] Cross Triangle! (Koushoku Shounen Vol. 02) [English] [ilwaz] [Decensored]
[Homura Subaru] Momoyuri Gakuen - Himitsu no Soap-bu R [Digital]
(C94) [Purimomo (Goyac)] Sankakkei no, Himitsu | Triangle Secret (Yuru Camp) [English] {WSDHANS}
[Coin RAND] Seitokaichou no Himitsu 3 (COMIC Anthurium 021 2015-01) [English] {Hennojin}
[Yamamoto] LOVE TRIANGLE Z PART 3 (Dragon Ball Z) [English] [Uncensored]
(C80) [Hachimitsu Himawari (Kozakura Ryou)] Neko Usa Ani (Various)
(Puniket 33) [Yumesaki Annai Kairanban (Hiro Hiroki)] Kokoro-chan Kansatsu Nikki (Kamisama Minarai Himitsu no Cocotama) [Chinese] [脸肿汉化组]
(Dondon Waru no Desu... Ouji) [Surface Tension (Orikuchi)] Suihei-san-tachi to Himitsu no Fune (Sennen Sensou Aigis)
[Triangle! (Various)] Dare mo Ore ga Wakaranai nara Tanetsuke Shimakutte mo Mondainai daro! | If no one can notice me, there is no harm in fucking a bunch of girls, right?! [English] {2d-market.com} [Decensored]
[Triangle!] Paizuri Fella no Aru Nichijou [Digital]
[lionoil (Arumajiki)] Gold Saucer Miqo'te Himitsu Club e Youkoso (Final Fantasy XIV) [Digital] [Chinese] [靴下汉化组]
iedeshoujonakadashi ki me se ku kyouseichoukyou
(C86) [Kabayakiya (Unagimaru)] Blue Triangle (Hitsugi no Chaika)
Yokubari Triangle
[Hachimitsu Romance (Eno Yukimi)] Natsumeki (Granblue Fantasy) [English] [Clawhammer] [Digital]
[Ikuhana Niro] Kanojo no Himitsu II - The Secret of Her (COMIC Anthurium 2017-07) [Chinese] [CE家族社] [Digital]
[Yuriwhale] Himitsu Kurabu (Monster Musume No iru Nichijou)
(C92) [Chocolate Land (kakao)] Koakuma Setsuko no Himitsu vol. 2 [Chinese] [無毒漢化組]
[Mousou Endemic (Amazake)] Patchouli-san to Himitsu no Dousei Seikatsu (Touhou Project)
Triangle H Chapter 4 -
(C91) [Tefutefu. (Tefun)] Futanari Erika to Maho no Himitsu II (Girls und Panzer)
[Kisho-Muri (A6)] Himitsu no Suiyoubi [Digital]
(C90) [KINOKONOMI (konomi)] Nyancology 5 -Usami-san to Himitsu no Misshitsu- [Chinese] [绅士仓库汉化]
(C90) [OFF (OKINA)] Himitsu no Kajitsu [English] [ATF]
[Ponpharse] Naoko-san to Boku -Futaridake no Himitsu no Jikan- | Naoko-san and I - Our Secret Time Together [English] [TigorisTranslates]
(C60) [2CV.SS (Asagi Yoshimitsu)] Eye's With Psycho 3RD EDITION (Shadow Lady, I''s)
[Triangle (Maple, Hiro Kazuki, Kakiko, etc)] TRIANGLE X18 ART WORKS 4 [Digital]
[hlz x Triangle! (Sanom, Uraha)] Onii-chan Daisuki dakedo Hazukashiku te Tsutae rare nai Imouto ga Osake ni Yotte Attack shimakuri de Ecchi sugiru
[Shioyama Bou (Zetsubou Shiromuji)] Maid in Triangle (COMIC Shingeki 2011-12)
(C90) [Motchie Kingdom (Motchie)] Himitsu Kichi no Himitsu (Dagashi Kashi) [English] {doujins.com}