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Summary

Yuuichi steals his sister's underwear and is using it to masturbate, until one day she catches him red-handed. She decides to keep it a secret from their parents though, and uses it to blackmail her perverted brother. Now he has no choice but to become his little sister's slave.

Kangoku Gakuen ~Gakuen Kounin, Chijoku no Kagai Jugyou~
Kangoku Gakuen ~Gakuen Kounin, Chijoku no Kagai Jugyou~
NAN%
Tags
  • Rape by Shota
  • Sexual Slavery
  • Anal Plug Tail
  • Protagonist with Voice Acting
  • Only Bad Endings
Rating 7.0835 Users
Triple x Sadistic -Do S na Ore to Reijou-tachi no 14-kakan-
Triple x Sadistic -Do S na Ore to Reijou-tachi no 14-kakan-
NAN%
Tags
  • Albino Protagonist
  • Sadist Heroine
  • Long Sexual Scenes
  • Reverse Rape
  • Pegging
Rating 6.0121 Users
Ero-dol ☆
Ero-dol ☆
NAN%
Tags
  • Unavoidable Harem Ending
  • Harem Ending with Theme
  • Japanese Idols
  • Boobs on Glass
  • Idol Heroine
Rating 5.9421 Users
Koi to xx no Femdom
Koi to xx no Femdom
NAN%
Tags
  • Female Domination Only
  • Masochist Protagonist
  • Consensual Erotic Humiliation
  • Submissive Protagonist
  • Dominatrix Heroine
Rating 7.0963 Users
Ishu Aigan
Ishu Aigan
NAN%
Tags
  • Amphibians
  • Consensual Sex With Monsters
  • Sex with Insects
  • Insects
  • Bestiality
Rating 6.1487 Users
Yankatsu! ~Yandere Futago to Hone no Zui made Icharabu Seikatsu Suru Hibi~
Yankatsu! ~Yandere Futago to Hone no Zui made Icharabu Seikatsu Suru Hibi~
NAN%
Tags
  • Shimaidon with Twins Ending
  • Shimaidon Ending
  • Balls Sucking
  • Yandere Heroine
  • Tribadism on Penis
Rating 5.8323 Users
Konchuu Kansatsu
Konchuu Kansatsu
NAN%
Tags
  • Insects
  • Sex with Insects
  • Blind Choices
  • Terrorized by Monsters
  • Butterflies
Rating 6.2073 Users
Senkou no Rumina Zenpen ~Sennyuu! Sei Alucard Jogakuen~
Senkou no Rumina Zenpen ~Sennyuu! Sei Alucard Jogakuen~
NAN%
Tags
  • Futanari Support Character
  • Futanari on Male
  • All-girls School
  • Bisexual Heroine
  • Reverse Rape
Rating 6.6620 Users
Kanojo ga Myuu Datta Baai ~Oshiego Vampire no Ama Toro Reizoku Choukyou~
Kanojo ga Myuu Datta Baai ~Oshiego Vampire no Ama Toro Reizoku Choukyou~
NAN%
Tags
  • Protagonist as the Only Male
  • Erotic Mind Control
  • Full Chastity Belt
  • Shoejob
  • Kneepit Sex
Rating 6.6822 Users
Kangoku Hime ~Little Joou-sama no M Otoko Pet-ka Choukyou~
Kangoku Hime ~Little Joou-sama no M Otoko Pet-ka Choukyou~
NAN%
Tags
  • Female Domination Only
  • Prison
  • Reverse Rape
  • Cock and Ball Torture Devices
  • Cock and Ball Torture
Rating 5.7327 Users
Namaiki Kinpatsu Twinte Bakunyuu Ojou-sama o Mesubuta Atsukai de Haramase Kai Suru Seikatsu
Namaiki Kinpatsu Twinte Bakunyuu Ojou-sama o Mesubuta Atsukai de Haramase Kai Suru Seikatsu
NAN%
Tags
  • Heroine with Slave Tattoo (BDSM)
  • Heroine with Crotchless Clothing
  • Non-consensual Erotic Humiliation
  • Nipple Piercing
  • Sexual Slavery (Choukyou Variation)
Rating 6.3739 Users
Chou Shiritsu! Onna no Ko-sama Gakuen
Chou Shiritsu! Onna no Ko-sama Gakuen
NAN%
Tags
  • Ballbusting
  • Cock and Ball Torture
  • Reverse Rape
  • Hetare Protagonist
  • Class President Heroine
Rating 6.6328 Users
Do M Otoko Tantei ga Iku 3 Anata no xx, Muite Ageru♪
Do M Otoko Tantei ga Iku 3 Anata no xx, Muite Ageru♪
NAN%
Tags
  • Save Memo Function
  • Heroine with Pre-story Virginity Loss to the Protagonist
  • Dirty Talk
  • Private Detective Protagonist
  • Brief Branches Only
Rating 5.8831 Users
Boku ga Kanojo no Pet ni Natta Riyuu
Boku ga Kanojo no Pet ni Natta Riyuu
NAN%
Tags
  • Masochist Protagonist
  • Cock and Ball Torture
  • Hospital
  • Urethral Sounding
  • Manual Prostate Stimulation
Rating 6.2120 Users
Irekawa Onee-chan, Boku no Karada de Onani Shichau no!?
Irekawa Onee-chan, Boku no Karada de Onani Shichau no!?
NAN%
Tags
  • Body Swapping
  • Genderbent Sex
  • Non-blood-related Brother/Sister Incest
  • Incest
  • Protagonist's Sister as a Heroine
Rating 6.5534 Users
Tsun M! ~Gyutto Shibatte Shidoushite~
Tsun M! ~Gyutto Shibatte Shidoushite~
NAN%
Tags
  • Heroine with Inverted Nipples
  • Heroine with Tan Lines
  • Masochist Heroine
  • Heroine with Swimsuits
  • Tsundere Heroine
Rating 6.6620 Users
Meidokissa.
Meidokissa.
NAN%
Tags
  • Quadruple+ Blowjob
  • Protagonist's Niece as a Heroine
  • Masochist Protagonist
  • Uncle/Niece Incest
  • Foreskin Play
Rating 6.9944 Users
Namaiki!
Namaiki!
NAN%
Tags
  • Non-twin Heroine Sisters
  • Only Protagonist's Sisters as Heroine(s)
  • Siscon Protagonist
  • Submissive Protagonist
  • Naizuri
Rating 6.6563 Users
Ijira Rental ~Eroama Onee-san ni Kashidasarechatta!!~
Ijira Rental ~Eroama Onee-san ni Kashidasarechatta!!~
NAN%
Tags
  • Group (4+) Handjob
  • Single Leg Legjob
  • Foreskin Play
  • Protagonist with Phimosis
  • Oneesan-type Heroine
Rating 7.4466 Users
Okasare Yuusha IV ~ANOTHER STORY~
Okasare Yuusha IV ~ANOTHER STORY~
NAN%
Tags
  • Sex with Monster Girls
  • Monster Girl Heroine
  • Maou Heroine
  • Submissive Protagonist
  • Reverse Rape
Rating 6.2028 Users
Joshi Gentei♪ Haramase Harem Gakuentoshi ~Gakuen mo Machi mo Mesu mo Subete wa Goshujin-sama no Tame ni! Yokubou no mama Niku Onaho Jusei o Otanoshimi Kudasai♪~
Joshi Gentei♪ Haramase Harem Gakuentoshi ~Gakuen mo Machi mo Mesu mo Subete wa Goshujin-sama no Tame ni! Yokubou no mama Niku Onaho Jusei o Otanoshimi Kudasai♪~
NAN%
Tags
  • Birthrate Decline
  • Unavoidable Harem Ending
  • Sexual Slavery (Choukyou Variation)
  • Discipline Committee Leader Heroine
  • Unnamed Protagonist
Rating 6.4029 Users
Iede Kissa ~Anata no Booth de Kasegasete~
Iede Kissa ~Anata no Booth de Kasegasete~
NAN%
Tags
  • Prostitute Protagonist
  • Runaway Heroine
  • Prostitution
  • Sex Involving Prostitution
  • Cafe
Rating 6.7122 Users
Rinjin ~Tonari no Kirei na Okaa-san wa Suki Desu ka?~
Rinjin ~Tonari no Kirei na Okaa-san wa Suki Desu ka?~
NAN%
Tags
  • Autobukkake
  • Cross-dressing
  • Flat Tints Only
  • Internal Exhibition of Sex
  • Heroine's Mother as a Heroine
Rating 5.8727 Users
Emuria! ~Ore ga Do M ni Natta no wa Dou Kangaete mo Omaera ga Warui~
Emuria! ~Ore ga Do M ni Natta no wa Dou Kangaete mo Omaera ga Warui~
NAN%
Tags
  • Masochist Protagonist
  • Single Legjob
  • Footjob
  • Haraguro Heroine
  • Non-blood-related Brother/Sister Incest
Rating 6.7043 Users
Semerare ~Imouto de Kanjiru nante, Onii-chan wa Hentai Nanda ne~
Semerare ~Imouto de Kanjiru nante, Onii-chan wa Hentai Nanda ne~
30%
Tags
  • Submissive Protagonist
  • Blood-related Brother/Sister Incest
  • Sadist Heroine
  • Student-Teacher Romance
  • Female Domination
Rating 5.8135 Users
Ijimete Maniac!!
Ijimete Maniac!!
29%
Tags
  • Ballbusting
  • Submissive Protagonist
  • Reverse Rape
  • Female Domination
  • Pegging
Rating 5.9625 Users
Boku ga Kanojo no Pet ni Natta Riyuu
Boku ga Kanojo no Pet ni Natta Riyuu
26%
Tags
  • Masochist Protagonist
  • Cock and Ball Torture
  • Hospital
  • Urethral Sounding
  • Manual Prostate Stimulation
Rating 6.2120 Users
Do M Otoko Tantei ga Iku 3 Anata no xx, Muite Ageru♪
Do M Otoko Tantei ga Iku 3 Anata no xx, Muite Ageru♪
24%
Tags
  • Save Memo Function
  • Heroine with Pre-story Virginity Loss to the Protagonist
  • Dirty Talk
  • Private Detective Protagonist
  • Brief Branches Only
Rating 5.8831 Users
Chou Shiritsu! Onna no Ko-sama Gakuen
Chou Shiritsu! Onna no Ko-sama Gakuen
23%
Tags
  • Ballbusting
  • Cock and Ball Torture
  • Reverse Rape
  • Hetare Protagonist
  • Class President Heroine
Rating 6.6328 Users
Kangoku Hime ~Little Joou-sama no M Otoko Pet-ka Choukyou~
Kangoku Hime ~Little Joou-sama no M Otoko Pet-ka Choukyou~
23%
Tags
  • Female Domination Only
  • Prison
  • Reverse Rape
  • Cock and Ball Torture Devices
  • Cock and Ball Torture
Rating 5.7327 Users
Namaiki Kinpatsu Twinte Bakunyuu Ojou-sama o Mesubuta Atsukai de Haramase Kai Suru Seikatsu
Namaiki Kinpatsu Twinte Bakunyuu Ojou-sama o Mesubuta Atsukai de Haramase Kai Suru Seikatsu
23%
Tags
  • Heroine with Slave Tattoo (BDSM)
  • Heroine with Crotchless Clothing
  • Non-consensual Erotic Humiliation
  • Nipple Piercing
  • Sexual Slavery (Choukyou Variation)
Rating 6.3739 Users
Senkou no Rumina Zenpen ~Sennyuu! Sei Alucard Jogakuen~
Senkou no Rumina Zenpen ~Sennyuu! Sei Alucard Jogakuen~
22%
Tags
  • Futanari Support Character
  • Futanari on Male
  • All-girls School
  • Bisexual Heroine
  • Reverse Rape
Rating 6.6620 Users
Kanojo ga Myuu Datta Baai ~Oshiego Vampire no Ama Toro Reizoku Choukyou~
Kanojo ga Myuu Datta Baai ~Oshiego Vampire no Ama Toro Reizoku Choukyou~
22%
Tags
  • Protagonist as the Only Male
  • Erotic Mind Control
  • Full Chastity Belt
  • Shoejob
  • Kneepit Sex
Rating 6.6822 Users
Tsun M! ~Gyutto Shibatte Shidoushite~
Tsun M! ~Gyutto Shibatte Shidoushite~
21%
Tags
  • Heroine with Inverted Nipples
  • Heroine with Tan Lines
  • Masochist Heroine
  • Heroine with Swimsuits
  • Tsundere Heroine
Rating 6.6620 Users
Namaiki!
Namaiki!
21%
Tags
  • Non-twin Heroine Sisters
  • Only Protagonist's Sisters as Heroine(s)
  • Siscon Protagonist
  • Submissive Protagonist
  • Naizuri
Rating 6.6563 Users
Okasare Yuusha IV ~ANOTHER STORY~
Okasare Yuusha IV ~ANOTHER STORY~
21%
Tags
  • Sex with Monster Girls
  • Monster Girl Heroine
  • Maou Heroine
  • Submissive Protagonist
  • Reverse Rape
Rating 6.2028 Users
Iede Kissa ~Anata no Booth de Kasegasete~
Iede Kissa ~Anata no Booth de Kasegasete~
21%
Tags
  • Prostitute Protagonist
  • Runaway Heroine
  • Prostitution
  • Sex Involving Prostitution
  • Cafe
Rating 6.7122 Users
Emuria! ~Ore ga Do M ni Natta no wa Dou Kangaete mo Omaera ga Warui~
Emuria! ~Ore ga Do M ni Natta no wa Dou Kangaete mo Omaera ga Warui~
21%
Tags
  • Masochist Protagonist
  • Single Legjob
  • Footjob
  • Haraguro Heroine
  • Non-blood-related Brother/Sister Incest
Rating 6.7043 Users
Sado★Bu! ~S-jo ni Ijime Nukare Bu♪~
Sado★Bu! ~S-jo ni Ijime Nukare Bu♪~
20%
Tags
  • Cock and Ball Torture
  • Heroine with Latex
  • Masochist Protagonist
  • Masochist Support Character
  • Sadist Heroine
Rating 6.5434 Users
Kenja no Okuri Imouto
Kenja no Okuri Imouto
20%
Tags
  • Blood-related Incest
  • Non-twin Heroine Sisters
  • Only Protagonist's Sisters as Heroine(s)
  • Buttjob
  • Siscon Protagonist
Rating 6.9271 Users
Imouto no Omocha ni Sarete Shimau Boku
Imouto no Omocha ni Sarete Shimau Boku
20%
Tags
  • Mesugaki Heroine
  • Female Domination Only
  • Only Protagonist's Sisters as Heroine(s)
  • Arrogant Heroine
  • Only Younger Heroines
Rating 5.3023 Users
Cool de M na Kaichou to Kageki na Ama Icha Kozukuri Gakuen Seikatsu
Cool de M na Kaichou to Kageki na Ama Icha Kozukuri Gakuen Seikatsu
20%
Tags
  • Sexual Slavery (Consensual)
  • Masochist Heroine
  • Deredere Heroine
  • Student Council President Heroine
  • Sex with Protagonist Only
Rating 6.2225 Users
Wafuu Seiso na Kurokami JK wa Do Hentai no Futanari Do Mazo ~Binkan Kyokon Chinpo wa Nani o Sarete mo Shasei Shichau~
Wafuu Seiso na Kurokami JK wa Do Hentai no Futanari Do Mazo ~Binkan Kyokon Chinpo wa Nani o Sarete mo Shasei Shichau~
19%
Tags
  • Futanari Protagonist
  • Ballbusting
  • Masochist Protagonist
  • Protagonist with Phimosis
  • Big Breast Sizes Protagonist
Rating 6.1223 Users
Jukuatsu
Jukuatsu
19%
Tags
  • Female Domination Only
  • Masochist Protagonist
  • Dominatrix Heroine
  • Sadist Heroine
  • Face-farting
Rating 7.2462 Users
Okasare Hero ~Minna ga Boku no Seieki o Neratteru...!?~
Okasare Hero ~Minna ga Boku no Seieki o Neratteru...!?~
19%
Tags
  • Monster Girl Support Character
  • Sex with Monster Girls
  • Rape on Defeat
  • Tailjob
  • Monster Girl Heroine
Rating 6.6641 Users
Yanda Watashi ni Okusuri Choudai ♪
Yanda Watashi ni Okusuri Choudai ♪
19%
Tags
  • Protagonist's Sister as a Heroine
  • Yandere Heroine
  • Non-blood-related Brother/Sister Incest
  • Protagonist's Younger Sister as a Heroine
  • Protagonist's Non-blood-related Sister as a Heroine
Rating 6.6520 Users
Konchuu Kansatsu Shuu
Konchuu Kansatsu Shuu
19%
Tags
  • Insects
  • Sex with Insects
  • Part-time Job
  • Nipple Insertion
  • Pragmatic Protagonist
Rating 6.3530 Users
Jogakuen no Seiyoku Shokudou ~Tokusei Sauce de Kugutsu ni Kawaru Shoujo-tachi~
Jogakuen no Seiyoku Shokudou ~Tokusei Sauce de Kugutsu ni Kawaru Shoujo-tachi~
18%
Tags
  • Oyaji Protagonist
  • Cum on Food
  • Ugly Protagonist
  • Chubby Protagonist
  • Erotic Mind Control
Rating 6.3429 Users

Onii-chan, Watashi Mitai na Manaita Hinnyuu no Imouto ni Ashikoki Sarete Kanjichaun Da. Hentai Da ne. Dohentai★ has not appeared in our Steam sample enough to calculate it's similar novels... sorry!
A novel needs atleast 20 owners before it's similarity is calculated.

Tags (53 total)

NameScoreImportanceWeight
Female Domination Only3.002.607.81
Heroine with Flat Chest (Non-Loli)3.002.236.70
Heroine with Gothic Look3.002.206.60
Sadist Heroine2.672.215.90
Clothed Female Naked Male2.002.264.52
Naizuri2.002.234.46
Domicile2.202.034.46
Nameable Heroine(s)2.002.234.46
Only Blood-related Heroines2.002.094.17
Female Domination2.881.444.14
Siscon Protagonist2.002.054.10
Submissive Protagonist1.752.284.00
Only Protagonist's Sisters as Heroine(s)2.001.993.98
Blood-related Brother/Sister Incest2.621.483.89
Only Younger Heroines2.001.943.88
Perverted Protagonist2.251.653.71
Sexual Slavery2.251.633.67
Blackmail2.001.763.51
Few Choices2.601.333.45
Legwear Footjob2.001.623.24
Only a Single Heroine3.001.023.05
Kuudere Heroine1.671.692.82
Under the Same Roof2.201.272.80
Heroine with Zettai Ryouiki2.001.392.79
One True End2.001.382.76
Single Footjob2.001.372.74
Vaginal Masturbation2.001.362.72
Sexual Devices1.501.742.61
Slavery1.002.572.57
Single Handjob2.001.252.49
High School Student Protagonist2.001.202.41
Modern Day Japan1.671.322.21
Sounds of Copulation1.671.292.15
Colored Name-tags1.751.232.15
Protagonist's Blood-related Sister as a Heroine1.101.952.14
Nameable Protagonist2.000.911.82
Nukige2.330.651.51
Intercrural Sex1.001.341.34
Bondage1.201.111.33
Student Heroine1.330.991.32
Vibrators1.001.151.15
Bad Endings with Story0.751.401.05
Missionary Position1.000.940.94
Multiple Endings1.400.670.94
Cunnilingus1.000.930.93
Male Protagonist2.000.300.60
Footjob0.271.890.51
Boobjob0.331.330.44
Urination Fetish0.251.660.42
ADV2.500.140.36
Handjob0.201.510.30
1.670.000.00
1.000.000.00

Traits (53 total)

NameCharactersImportanceWeight
Defloration by an Object Engages in (Sexual)13.642.52
Onahole Subject of (Sexual)12.831.96
Naizuri Engages in (Sexual)12.571.78
Bondage Engages in12.551.77
Blindfold Clothes12.541.76
Legwear Footjob Engages in (Sexual)12.441.69
Sister Complex Personality12.381.65
Facesitting Subject of (Sexual)12.351.63
Kuudere Personality12.341.62
Incest Engages in (Sexual)21.471.61
Intercrural Sex Subject of (Sexual)12.281.58
Blackmail Engages in12.221.54
Masturbation Engages in (Sexual)21.391.53
Gothic Clothes12.201.52
Footjob Subject of (Sexual)12.181.51
Sexual Submissive Role12.171.51
Sexual Dominant Role12.161.50
Sexual Sadism Engages in (Sexual)12.151.49
Mouth Gag Subject of (Sexual)12.141.48
Blackmail Subject of12.121.47
Hime Cut Hair12.021.40
Butterfly Engages in (Sexual)12.021.40
Small Breast Sizes Body12.001.39
Facesitting Engages in (Sexual)11.971.37
Cold-hearted Personality11.951.35
Full Brother Role11.951.35
Bra Clothes11.851.28
Intercrural Sex Engages in (Sexual)11.841.28
Handjob Subject of (Sexual)11.751.21
Vaginal/Anal Sexual Toys Subject of (Sexual)11.741.20
Footjob Engages in (Sexual)11.721.19
Panties Clothes11.711.19
Ribbon Hair Accessory Clothes11.661.15
Pervert Personality11.631.13
Full Sister Role11.561.08
Blunt Bangs Hair11.400.97
Dress Clothes11.250.87
Ribbon Tie Clothes11.250.87
Violet Hair11.190.83
Butterfly Subject of (Sexual)11.170.81
Handjob Engages in (Sexual)11.160.80
Tareme Eyes11.110.77
Violet Eyes11.050.72
Thigh-high Stockings Clothes11.040.72
Teen Body20.620.68
Straight Hair10.940.65
Shoulder-length Hair10.920.64
Slim Body20.580.63
High School Student Role10.850.59
Virgin Sex Engages in (Sexual)10.850.59
Waist Length+ Hair10.810.56
Brown Hair10.680.47
Pale Body10.370.26