Kyoudai no Himitsu no Su | The Siblings' Secret Nest
[Zaki Zaraki] Aru Kyoudai no Baai | In The Case of Certain Siblings (Hamezukids) [English] {Mistvern}
Sick SIblings [English] [Rewrite] [EZ Rewriter]
[Shimaji] Ona-Kyoudai | Masturbation Siblings (Otokonoko Heaven Vol. 09) [English] [mysterymeat3]
Fellatio Kenkyuubu | Departamento de Investigación de las Felaciones Ch. 1
siblings
Sibling Sex [English] [Rewrite] [olddog51]
Two Siblings' Fela Pure - Chapter 5
Mahou Tokusou Greedia4 - Magical Investigator Greedia Final
[Sakaki Naomoto] Tokumei Chikan Otori Sousahan Ch.1 | Special Molester Decoy Investigation Squad Ch.1 [English] {Doujins.com}
Chichi Katajikena Sousakan | Shameless Breast Investigator
Two Siblings' Fela Pure - Chapter 2
Busty Married Woman Investigator Yuka
Kyoudai Switch | Siblings Switch
Tokumei Chikan Otori Sousahan Ch.1 | Special Molester Decoy Investigation Squad Ch.1
[Zarigani Arms] Aloerosy (Muhyo and Roji's Bureau of Supernatural Investigation)
[Saimin! Pikatto House (Tetsuya, Routa)] Saimin Shihai [Sumi] ~Rias no H na Torishirabe~ | Hypnosis Control ~Rias's Ecchi Investigation~ (Highschool DxD) [English] (Trinity Translations Team)
Secret Sibling Sex [English] [Rewrite] [EZ Rewriter]
Hazukashii Chibusa Chapter 4: Sibling Union
Sudou Ie No Seijijou | Sudou Siblings Sexual Circumstances
[Tsubaki Jushirou] Danchi Kyoudai no Gogo | The Apartment Siblings’ Afternoon [English] {Hennojin}
Bogo to Nick no Yarisugi Sousa | The investigation of Bogo and Nick
[Aoki Kanji] Kyoudai no Himitsu no Su | The Siblings' Secret Nest (COMIC Anthurium 2016-10) [English] [Team Koinaka] [Digital]
Galaxy Investigation Agent Eira
Crime Scene Investigation - Takeshi Matzu
[Souko Souji] Hentai Kyoudai to Inu | Pervert Siblings and Their Dog (COMIC Tenma 2013-04) [English] [Hentai Bedta] [Decensored]
[Isako Rokuroh] Kyoudaizakari | Sibling Lust (Bishoujo Kakumei KIWAME 2009-04 Vol. 1) [English] [darknight]
Shippai! Otori Sousa | Failure! Investigation Bait
Decoy Investigator Kyouka: Cosplay Party Infiltration
Tokumei Chikan Otori Sousahan | Special Molester Decoy Investigation Squad Ch. 1-2
Sibling Lust
Komi-ke no Kyoudai Asobi The Komis’ Sibling Playtime
[Almarosso] Manbiki G-men to SEX suru | Having Sex with the Loss Prevention Investigator [English] [desudesu]
Closed investigation journal
Nakayoshi Kyo-dai | Close Siblings
Shousa, Otori Sousa o Suru | Group Molester Decoy Investigation
(C89) [Mofu Shippo Lab (Subaru.)] Kyoudai de Tomodachi de Koibito na Boku to Neko | Siblings, Friends, Lovers: My life with a cat (Touhou Project) [English] [ATF]
Water Type Inter-Species Girl's Tentacle Investigation
[Ankoman] Muzan Sousakan ~Ryouka & Akari~ | Misery Investigators ~ Ryouka & Akari ~ (Seigi no Heroine Kangoku File Vol. 10) [English] [stnkmnsd] [Digital]
Gyaru Hakase no Himitsu Kenkyuu | Gyaru Professor’s Secret Investigation
Mahou Tokusou Greedia3 - Magical Investigator Greedia3
Nandemo Chousa Mama Shizue | The All-Around Investigator Momma, Shizue
[Isako Rokuroh] Kyoudaizakari | Sibling Lust (Bishoujo Kakumei KIWAME 2009-04 Vol. 1) [English] [darknight] [Decensored]
Kyonyuu Sousa-kan Yura - Bitch Order | Yura Big Boobs Investigator - Bitch Order Ch. 1
Uwasa Saguri Zenpen | Rumor Investigation - Part One
[Saikoro Steak] Josousakan Saeko | The Woman Investigator Saeko
Aki Sora Ch5 - The Close Siblings
[Mikami Hokuto] JUNK Kyoudai | Junk Siblings [English] [desudesu]
Naruto - School Siblings
[Nakami Yoshikage] "Sudden Shock! Female Investigator Asuka"
Nyotaika Sousa sarechimatta | Gender Bender Investigation
Tokumu Mayaku Sousakan Linda | Special Narcotics Investigator Linda
[Oogoshi Koutarou] Ryouki Keiji Marusai - detective investigating bizarre case;MARUSAI -
Evenkuruga Siblings | Evenkuruga no Shitei
Sibling Play
Kyoudai no Kazoku | Siblings' Family
Nenchaku Taishitsu - Chap 01 - Adulterous Step-Siblings - Sex Friend
Sibling Rivalry [English] [Rewrite] [olddog51]
The snail and the Siblings
Kyoudai no Kyoukaisen | The Siblings' Ley Line {Hennojin}
The S&M Siblings Across From Me
CLUB DE INVESTIGACIÓN CIENTÍFICA
(SC2016 Winter) [cocon! (Otone)] Evenkuruga no Shitei | Evenkuruga Siblings (Utawarerumono Itsuwari no Kamen) [English] [EHCOVE] [Decensored]
summer siblings [English] [Rewrite] [gOZER45]
[Yoru no Oto] Woman Investigator K - Mayaku Sousa Hen | Woman Investigator K - Narcotics Investigation (Slave Heroines Vol. 9) [English] {doujin-moe.us}
[Oomori Harusame] Kyoudai Ijou Koibito Miman | More than Siblings, Less than Lovers (COMIC HOTMILK 2010-06) [English]
No Longer Siblings
Komi-ke no Kyoudai Asobi | The Komis’ Sibling Playtime
Busty Married Wife Infiltrates Investigator·Aya
(C86) [Imitation Moon (Narumi Yuu)] Gamer Kyoudai ga Sex wo Oboeta You desu | It Seems that the Gamer Siblings Picked up Sex (No Game No Life) [English] [The Chrysanthemum Translations]
Saimin Shihai ~Rias no H na Torishirabe~ | Hypnosis Control ~Rias's Ecchi Investigation~
Undercover Drug Investigator Monica & Jita
Two Siblings' Fela Pure - Chapter 6
Nympho Siblings [English] [Rewrite] [EZ Rewriter]
[Misaoka] Kyoudai Nakayoku | Intimate Step-siblings (NyuNyu Wave) [English] [InsanePraetor]
Siblings Stranded [English] [Rewrite] [EZ Rewriter]
Two Siblings' Fela Pure - Chapter 3
Love Kachuu Chapter 12 "Sibling Summer Vacation"
[Sabawo] Monochrome Siblings [English] [Boutok]
Atlantis Investigation
Hypnosis Control ~Rias's Ecchi Investigation~
Kyoudai de Enmusubi | We're Siblings but Let's Get Married
Kyo-dai After | Siblings After
[Tensei-kun] Kyodai - Ane to!! | Siblings - With Sister!!(COMIC Masyo 2012-01)[English][Amoskandy][Digital]
Super de Hitozuma ni Innen Tsukete? | Investigating a Married Woman on Shoplifting Charges
More than Siblings, Less than Lovers
[Tokisana] Undercover Investigator Suzu (English)
[Mutsuki] Kyoudai no Kyoukaisen | The Siblings' Ley Line (Kono Mama Naka de...) [English] {Hennojin} [Digital]
[NO.Gomes] Gravity Die - TS School Infiltrating Investigator: The Shameful Stripshow (TS Gakuen Sennyuu Sousakan: Chijoku No Stripshow) (English)
Shite Ii Kyoudai | Incestous Siblings
[Jamming] Kyonyuu Sousa-kan Yura - Bitch Order | Yura Big Boobs Investigator - Bitch Order Ch. 1 [English] [Raknnkarscans]
[Jamming] Kyonyuu Sousa-kan Yura - Bitch Order | Yura Big Boobs Investigator - Bitch Order [English] [Raknnkarscans]
[Chuuka Naruto] Onna Sousakan Choukyou Rensa | Woman Investigator Training Link [English] [SaHa]
[Sawada Daisuke] Hitoduma Tantei no Chinkenpo | Married Investigator's Chinkenpo (COMIC Shingeki 2011-01) [English] [SaHa]
The Kamoshida Investigation
[Nakami Yoshikage] Taima Sousakan Sanae ~Shokushu Ingyaku~ | Demon Investigator Sanae (Rider Suit Heroine Anthology Comics 2) [English] [SaHa]
You Will! -Fuyukawaka siblings story-
Bijin Kensatsukan Hamerare Chijoku Sousa | Beautiful Prosecutor's Framing and Rape Investigation
Crime Scene Investigation - Takeshi Matsu (Bara)
Sibling Service [English] [Rewrite] [Xeno]
Siblings In The Train
Sakuranbo Keimai | Cherry Siblings
[Nigami Whip Milk (Iegami)] Shite Ii Kyoudai | Incestous Siblings [English]