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Summary

The main character, a prefect, lives with his younger sister, Haruka. He loves Oppai and cosplay girls. Though he keeps it secret at school, there are a lot of cosplay uniforms in his room. Of course, Haruka dislikes him.... One day, she finds a tissue paper her older brother used for masturbation in a dust box. She feels sick at first, but she gets sexually excited when she smells it.... The main character sees it all and knows that Haruka always gets sexually excited by smelling semen.... [From ErogeShop]

Tonari no Oyako wa Nikushokukei!? ~Ai to Yokubou to Yuuwaku no Hibi wa Hikkoshi to Tomo ni Otozureru~
Tonari no Oyako wa Nikushokukei!? ~Ai to Yokubou to Yuuwaku no Hibi wa Hikkoshi to Tomo ni Otozureru~
NAN%
Tags
  • Divorcee Heroine
  • Onahole
  • Masturbation with Object
  • Oyakodon Ending
  • Heroine with Children
Rating 6.6024 Users
Otosareta Bishimai ~Douka Sono Ko Dake wa Tasukete Kudasai~
Otosareta Bishimai ~Douka Sono Ko Dake wa Tasukete Kudasai~
NAN%
Tags
  • Non-twin Heroine Sisters
  • Janitor Protagonist
  • Consensual Phone Sex
  • Shimaidon
  • Heroine in Relationship with Other(s)
Rating 6.7952 Users
Doutei Gui ~Hitozuma no Akunaki In
Doutei Gui ~Hitozuma no Akunaki In'yoku~
NAN%
Tags
  • Only Older Heroines
  • Netori
  • Infidelity
  • Only Adult Heroines
  • Married Heroine
Rating 6.1524 Users
boin
boin
NAN%
Tags
  • Protagonist's Boss as a Heroine
  • Medical Doctor Heroine
  • Protagonist's Cousin as a Heroine
  • Heroine with Beauty Mark
  • Teacher Protagonist
Rating 7.4950 Users
Orihime ~Gokujou no Mirai wa Ore no Mono~
Orihime ~Gokujou no Mirai wa Ore no Mono~
NAN%
Tags
  • Businesswoman Heroine
  • Japanese Idols
  • Wealthy Protagonist
  • Strangulation Sex
  • Ejaculation Forewarner
Rating 6.9634 Users
Idol Pafupafu Management -Geinou Musume o H ni Bust UP Producer-
Idol Pafupafu Management -Geinou Musume o H ni Bust UP Producer-
NAN%
Tags
  • Japanese Idols
  • Dying Protagonist
  • Breast Expansion
  • Leader Heroine
  • Chuunibyou Heroine
Rating 7.0344 Users
Gokinjo Zukiai ~Rinjin Bijin Oyako Kousai~
Gokinjo Zukiai ~Rinjin Bijin Oyako Kousai~
NAN%
Tags
  • Heroine with Anal Hair
  • Oyakodon Ending
  • Sex with Sleepers
  • Sexual Devices
  • Condoms
Rating 6.5020 Users
Toraba!
Toraba!
NAN%
Tags
  • Romancing a Family
  • Swimming Club
  • Class President Heroine
  • Foolish Friend
  • Oyakodon Ending
Rating 6.8824 Users
Ojou-sama wa Katai no ga Osuki! ~Shinsei Naru Joshi Ryou Nikki~
Ojou-sama wa Katai no ga Osuki! ~Shinsei Naru Joshi Ryou Nikki~
NAN%
Tags
  • Cook Protagonist
  • Gymnastic Heroine
  • Hotblooded Protagonist
  • Impregnation Choice
  • Artist Heroine
Rating 6.9541 Users
Pafu Pafu Sentou Monogatari! ~Machi no Ofuroya-san, Hanjou no Hiketsu wa H na Massage~
Pafu Pafu Sentou Monogatari! ~Machi no Ofuroya-san, Hanjou no Hiketsu wa H na Massage~
NAN%
Tags
  • Defloration During Common Route
  • Prostitution
  • Romancing a Family
  • Oyakodon Ending
  • Single Buttjob
Rating 6.4627 Users
Bikyaku Reijou Yuuna "Ashi mo Oshiri mo Konna ni Yogosu Nante... Zettai ni Yurusanai!"
Bikyaku Reijou Yuuna "Ashi mo Oshiri mo Konna ni Yogosu Nante... Zettai ni Yurusanai!"
NAN%
Tags
  • Butler Protagonist
  • Arrogant Heroine
  • Protagonist's Boss as a Heroine
  • Heroine with Tights
  • Master and Servant
Rating 7.1840 Users
Itazura ~Boku Dake no Zettai Ryouiki~
Itazura ~Boku Dake no Zettai Ryouiki~
NAN%
Tags
  • Chikan Heroine
  • Hotel
  • Trains
  • Voiced Thoughts
  • Pregnancy Good Ending
Rating 6.1720 Users
Peekaboo! ~Kanojo ga Ecchi na Mizugi ni Kigaetara!?~
Peekaboo! ~Kanojo ga Ecchi na Mizugi ni Kigaetara!?~
NAN%
Tags
  • Non-penetrative Sex
  • Shy Heroine
  • Twin Boobjob
  • Heroine with Swimsuits
  • Production of Pornography (Amateur)
Rating 6.8236 Users
Meimon Joshikou Ryokou ~Ore Dake Otoko Nandesu ga!?~
Meimon Joshikou Ryokou ~Ore Dake Otoko Nandesu ga!?~
NAN%
Tags
  • Trap Protagonist
  • All-girls School
  • Single Buttjob
  • Half-Japanese Heroine
  • Only Virgin Heroines
Rating 7.0724 Users
Fudeoroshi Mama ~Afureru Hakudaku & Milk~
Fudeoroshi Mama ~Afureru Hakudaku & Milk~
NAN%
Tags
  • Obacon
  • Non-blood-related Mother/Son Incest
  • Protagonist's Non-blood-related Mother as a Heroine
  • Only Older Heroines
  • Widow Heroine
Rating 5.7522 Users
Sukebe na Shojo no Tsukurikata
Sukebe na Shojo no Tsukurikata
NAN%
Tags
  • Consensual Phone Sex
  • Onsen
  • Female Protagonist for a Short Time
  • Only Younger Heroines
  • Condoms
Rating 7.0022 Users
Nakayoshi Kazoku Nara Kiss mo Nakadashi mo Touzen Da yo ne!
Nakayoshi Kazoku Nara Kiss mo Nakadashi mo Touzen Da yo ne!
NAN%
Tags
  • Protagonist's Twin as a Heroine
  • Twincest
  • Protagonist's Sister as a Heroine
  • Siscon Protagonist
  • Brocon Heroine
Rating 6.6122 Users
Sukechatte!! ~Kyuushi ni Isshou o Ete Noumitsu Second Life~
Sukechatte!! ~Kyuushi ni Isshou o Ete Noumitsu Second Life~
NAN%
Tags
  • Protagonist with Superpowered Side
  • Invisibility
  • High Amount of Special Effects
  • Defloration During Common Route
  • Shapeshifting
Rating 6.4823 Users
Gakuen Injoku Rinbukyoku ~Junketsu no Otome ga Midara na Mesu e to Ochiru made~
Gakuen Injoku Rinbukyoku ~Junketsu no Otome ga Midara na Mesu e to Ochiru made~
NAN%
Tags
  • Hate Story
  • Strong Female Protagonist
  • Unavoidable Rape
  • Kneepit Sex
  • Gang Rape
Rating 6.8922 Users
Sensei o Haramaseyou! ~Hiyoko no Noroi de Toumeika Suru Ore!?~
Sensei o Haramaseyou! ~Hiyoko no Noroi de Toumeika Suru Ore!?~
NAN%
Tags
  • P.E. Teacher Heroine
  • Principal Heroine
  • Heroine with Spats
  • School Nurse Heroine
  • Heroine with Tights
Rating 6.4657 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
Tonari no Seki no Gyaru Bitch ~Boku wa Kanojo no Sexfriend!?~
Tonari no Seki no Gyaru Bitch ~Boku wa Kanojo no Sexfriend!?~
NAN%
Tags
  • Skin Color Selection
  • Otaku Protagonist
  • Customization
  • Gyaru Heroine
  • Long Sexual Scenes
Rating 6.4527 Users
Kinkyuu Sengen - Onee-chan-tachi wa Shojo o Sotsugyou Shimasu!!
Kinkyuu Sengen - Onee-chan-tachi wa Shojo o Sotsugyou Shimasu!!
NAN%
Tags
  • Only Older Heroines
  • Only Protagonist's Sisters as Heroine(s)
  • Blood-related Brother/Sister Incest
  • Single Buttjob
  • Twin Boobjob
Rating 6.5721 Users
Bonyuu ga Shimideru Manamusume Manami "Otou-san, Watashi no Milk Takusan Shibotte Hoshii no..."
Bonyuu ga Shimideru Manamusume Manami "Otou-san, Watashi no Milk Takusan Shibotte Hoshii no..."
NAN%
Tags
  • Protagonist's Blood-related Daughter as a Heroine
  • Fathercon Heroine
  • Blood-related Father/Daughter Incest
  • Central Heroine
  • Protagonist with Children
Rating 7.3371 Users
Nangoku Prison ~Hyouryuu Shita Mujintou ga Kozukuri Shinai to Derarenai Shima Datta Ken~
Nangoku Prison ~Hyouryuu Shita Mujintou ga Kozukuri Shinai to Derarenai Shima Datta Ken~
43%
Tags
  • Stranded
  • Quadruple+ Blowjob
  • Has Window Transparency Setting
  • Twin Buttjob
  • Island
Rating 7.0726 Users
Gouin ni Sareru to Ureshikute Hajimete demo Yoku Aeijau Reijou na Osananajimi Yui "Yamete, Ashi ni Sawaranaide...... demo Hontou wa Kimochi Ii no"
Gouin ni Sareru to Ureshikute Hajimete demo Yoku Aeijau Reijou na Osananajimi Yui "Yamete, Ashi ni Sawaranaide...... demo Hontou wa Kimochi Ii no"
43%
Tags
  • Single Legjob
  • Heroine with Tights
  • High Amounts of Rape
  • Kneepit Sex
  • Clothing Damage
Rating 6.9535 Users
Meimon Joshikou Ryokou ~Ore Dake Otoko Nandesu ga!?~
Meimon Joshikou Ryokou ~Ore Dake Otoko Nandesu ga!?~
42%
Tags
  • Trap Protagonist
  • All-girls School
  • Single Buttjob
  • Half-Japanese Heroine
  • Only Virgin Heroines
Rating 7.0724 Users
Peekaboo! ~Kanojo ga Ecchi na Mizugi ni Kigaetara!?~
Peekaboo! ~Kanojo ga Ecchi na Mizugi ni Kigaetara!?~
41%
Tags
  • Non-penetrative Sex
  • Shy Heroine
  • Twin Boobjob
  • Heroine with Swimsuits
  • Production of Pornography (Amateur)
Rating 6.8236 Users
Itazura ~Boku Dake no Zettai Ryouiki~
Itazura ~Boku Dake no Zettai Ryouiki~
41%
Tags
  • Chikan Heroine
  • Hotel
  • Trains
  • Voiced Thoughts
  • Pregnancy Good Ending
Rating 6.1720 Users
Pafu Pafu Sentou Monogatari! ~Machi no Ofuroya-san, Hanjou no Hiketsu wa H na Massage~
Pafu Pafu Sentou Monogatari! ~Machi no Ofuroya-san, Hanjou no Hiketsu wa H na Massage~
40%
Tags
  • Defloration During Common Route
  • Prostitution
  • Romancing a Family
  • Oyakodon Ending
  • Single Buttjob
Rating 6.4627 Users
Bikyaku Reijou Yuuna "Ashi mo Oshiri mo Konna ni Yogosu Nante... Zettai ni Yurusanai!"
Bikyaku Reijou Yuuna "Ashi mo Oshiri mo Konna ni Yogosu Nante... Zettai ni Yurusanai!"
40%
Tags
  • Butler Protagonist
  • Arrogant Heroine
  • Protagonist's Boss as a Heroine
  • Heroine with Tights
  • Master and Servant
Rating 7.1840 Users
Toraba!
Toraba!
39%
Tags
  • Romancing a Family
  • Swimming Club
  • Class President Heroine
  • Foolish Friend
  • Oyakodon Ending
Rating 6.8824 Users
Ojou-sama wa Katai no ga Osuki! ~Shinsei Naru Joshi Ryou Nikki~
Ojou-sama wa Katai no ga Osuki! ~Shinsei Naru Joshi Ryou Nikki~
37%
Tags
  • Cook Protagonist
  • Gymnastic Heroine
  • Hotblooded Protagonist
  • Impregnation Choice
  • Artist Heroine
Rating 6.9541 Users
Sukebe na Shojo no Tsukurikata
Sukebe na Shojo no Tsukurikata
36%
Tags
  • Consensual Phone Sex
  • Onsen
  • Female Protagonist for a Short Time
  • Only Younger Heroines
  • Condoms
Rating 7.0022 Users
Sukechatte!! ~Kyuushi ni Isshou o Ete Noumitsu Second Life~
Sukechatte!! ~Kyuushi ni Isshou o Ete Noumitsu Second Life~
36%
Tags
  • Protagonist with Superpowered Side
  • Invisibility
  • High Amount of Special Effects
  • Defloration During Common Route
  • Shapeshifting
Rating 6.4823 Users
Sensei o Haramaseyou! ~Hiyoko no Noroi de Toumeika Suru Ore!?~
Sensei o Haramaseyou! ~Hiyoko no Noroi de Toumeika Suru Ore!?~
35%
Tags
  • P.E. Teacher Heroine
  • Principal Heroine
  • Heroine with Spats
  • School Nurse Heroine
  • Heroine with Tights
Rating 6.4657 Users
Tonari no Seki no Gyaru Bitch ~Boku wa Kanojo no Sexfriend!?~
Tonari no Seki no Gyaru Bitch ~Boku wa Kanojo no Sexfriend!?~
35%
Tags
  • Skin Color Selection
  • Otaku Protagonist
  • Customization
  • Gyaru Heroine
  • Long Sexual Scenes
Rating 6.4527 Users
Bonyuu ga Shimideru Manamusume Manami "Otou-san, Watashi no Milk Takusan Shibotte Hoshii no..."
Bonyuu ga Shimideru Manamusume Manami "Otou-san, Watashi no Milk Takusan Shibotte Hoshii no..."
35%
Tags
  • Protagonist's Blood-related Daughter as a Heroine
  • Fathercon Heroine
  • Blood-related Father/Daughter Incest
  • Central Heroine
  • Protagonist with Children
Rating 7.3371 Users
Oshirikko Venus 2
Oshirikko Venus 2
35%
Tags
  • Non-penetrative Sex
  • Big Ass Heroine
  • Perverted Protagonist
  • Twin Footjob
  • Sex on a Roof
Rating 7.2533 Users
Binyuu Kiss Nee Rimi "Otouto no Kuse ni Sakarau Nante... Namaiki yo!"
Binyuu Kiss Nee Rimi "Otouto no Kuse ni Sakarau Nante... Namaiki yo!"
34%
Tags
  • Oneesan-type Heroine
  • Blood-related Aunt/Nephew Incest
  • Incest Romance
  • Kissing Scene
  • Armpit Sex
Rating 7.3123 Users
Zubu Nure no Ane Kasumi "Watashi no Mizugi ni Sonna Kitanai Mono, Shimikomasenaide!"
Zubu Nure no Ane Kasumi "Watashi no Mizugi ni Sonna Kitanai Mono, Shimikomasenaide!"
34%
Tags
  • Swimming Club
  • Protagonist's Sister-in-Law as a Heroine
  • Heroine with Swimsuits
  • Rapist Protagonist
  • Revenge
Rating 7.0229 Users
Mononoke In
Mononoke In'youtan Konna ni Kawaii Ko ga Ningen no Hazu ga Nai!
32%
Tags
  • Group (4+) Boobjob
  • Oni Heroine
  • Youkai
  • Youkai Heroine
  • Immortal Heroine
Rating 6.8122 Users
Tsundere Inran Shoujo Sukumi ~Karappo ni Naru made Yurusanai kara ne~
Tsundere Inran Shoujo Sukumi ~Karappo ni Naru made Yurusanai kara ne~
32%
Tags
  • Heroine with Swimsuits
  • Consensual Sex with Animals
  • Tsundere Heroine
  • Perverted Heroine
  • Map Movement
Rating 5.6121 Users
Motoyan Hitozuma o Pako tte Honenuki Ana Yomeka ~Tomodachi no Tsuyoki Kaa-chan de Sukikatte Za Shori Asobi Haramase~
Motoyan Hitozuma o Pako tte Honenuki Ana Yomeka ~Tomodachi no Tsuyoki Kaa-chan de Sukikatte Za Shori Asobi Haramase~
32%
Tags
  • Unnamed Protagonist
  • Netori
  • Married Heroine
  • Masochist Heroine
  • Spontaneous Sex Scenes
Rating 6.2527 Users
Maid in Witch Life! -Yakata de Hajimaru H na Miryou Seikatsu-
Maid in Witch Life! -Yakata de Hajimaru H na Miryou Seikatsu-
32%
Tags
  • Witch Heroine
  • Chuunibyou Heroine
  • Voice Saving
  • Maid Heroine
  • Heroine with Garter Belt
Rating 7.2636 Users
Imosapo! ~Genkin de Low na Kyonyuu Imouto ni, Oppai Momasete Moraimashita~
Imosapo! ~Genkin de Low na Kyonyuu Imouto ni, Oppai Momasete Moraimashita~
32%
Tags
  • Runaway Heroine
  • Slice of Life Comedy
  • Protagonist's Younger Sister as a Heroine
  • Protagonist's Full Sister as a Heroine
  • Clothed Boobjob
Rating 7.0932 Users
Selfre -Self Friend-
Selfre -Self Friend-
32%
Tags
  • Charming Protagonist
  • Photographer Protagonist
  • Photographer Heroine
  • Heroine with Pre-story Virginity Loss to the Protagonist
  • Student Club Member Protagonist
Rating 7.4247 Users
Saimin Soku Yari Kyonyuu Reijou: Cool JK Harami Ochi Hen
Saimin Soku Yari Kyonyuu Reijou: Cool JK Harami Ochi Hen
32%
Tags
  • Mind Control
  • Pregnancy Ending
  • Big Breast Sizes Heroine
  • Heroine with Tights
  • Erotic Mind Control
Rating 6.5134 Users

Binyuu Inmai Haruka "Watashi ni Iyarashii Cosplay Saseru nante... Kono Hentai!" 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 (37 total)

NameScoreImportanceWeight
Discipline Committee Leader Protagonist2.003.597.18
Twin Bellyjob2.003.106.19
Protagonist's Blood-related Sister as a Heroine3.001.955.84
Heroine with Spats2.002.404.79
Bunnygirl Cosplay2.002.254.51
Heroine with Kimono2.001.883.76
Hairjob2.001.853.70
Central Heroine2.001.813.61
Naked Heroine with Apron2.001.663.33
Heroine with Swimsuits2.001.643.29
Legwear Footjob2.001.623.24
School2.001.513.02
Blood-related Brother/Sister Incest2.001.482.97
Harem Ending2.001.402.81
Ponytail Heroine2.001.402.81
Heroine with Zettai Ryouiki2.001.392.79
Single Footjob2.001.372.74
Boobjob2.001.332.65
Big Breast Sizes Heroine2.001.312.62
Bathroom Sex2.001.192.37
Pregnant Sex2.001.182.35
Twin Tail Heroine2.001.172.35
Sex with Protagonist Only2.001.132.26
Blowjob2.001.122.24
Quickie Fix Position2.001.112.23
Only Virgin Heroines2.001.082.16
Sixty-nine2.001.072.14
Standing Sex2.001.052.11
Sitting Sex2.001.052.11
High Sexual Content2.001.052.10
Cosplay1.002.052.05
Group Sex of One Male and Several Females2.000.921.83
Nameable Protagonist2.000.911.82
Cowgirl2.000.841.67
Defloration2.000.761.52
Male Protagonist2.000.300.60
ADV2.000.140.29

Traits (97 total)

NameCharactersImportanceWeight
Bunnygirl Cosplay Engages in22.612.87
Tiger Cosplay Engages in14.102.84
Sexual Animal Cosplay Engages in (Sexual)22.522.77
Tabi Clothes22.262.48
Sexual Cosplay Engages in (Sexual)22.242.46
Sport Bloomers Clothes31.722.38
Kemonomimi Headband Clothes22.042.24
Kunai Items13.112.16
Over The Knee Socks Clothes21.942.14
Naked Apron Clothes21.882.06
Yukata Clothes21.852.03
Cat Cosplay Engages in12.811.95
Student Club Advisor Role12.641.83
T-shirt Clothes31.311.82
Catsuit Clothes12.621.82
Keikogi Clothes12.621.81
Sling Bikini Clothes12.611.81
Ninja Suit Clothes12.571.78
Garter Belt Stockings Clothes21.621.77
Police Officer Uniform Clothes12.531.75
Sports Swimsuit Clothes12.491.72
Tail Clothes12.471.71
Sitting Sex Subject of (Sexual)41.061.71
Homeroom Teacher Role12.451.70
Thigh-high Stockings Clothes41.041.68
Group Sex Engages in (Sexual)21.511.66
Hairjob Engages in (Sexual)12.341.62
Seventh Posture Subject of (Sexual)21.461.61
Sexual Masochism Engages in (Sexual)12.221.54
Micro Bikini Clothes12.211.53
Spats Clothes12.201.52
Chinese Dress Clothes12.201.52
Knee-high Socks Clothes21.381.52
Bell (accessory) Clothes12.161.50
Tominagi Subject of (Sexual)21.361.49
Veil Clothes12.141.49
Lace Lingerie Clothes12.101.45
Ahegao Engages in (Sexual)21.321.45
Nurse's Cap Clothes12.091.45
Thick Eyebrows Hair12.061.43
Smoking Engages in12.041.41
Nurse Uniform Clothes12.001.39
Wedding Dress Clothes11.991.38
Virgin Sex Engages in (Sexual)40.851.37
Miko's Dress Clothes11.951.35
One Piece Swimsuit Clothes11.921.33
Multiple Penetration Subject of (Sexual)11.871.29
Deepthroat Engages in (Sexual)11.801.25
Missionary Subject of (Sexual)21.121.23
Pajamas Clothes11.751.21
Skirt Suit Clothes11.741.21
Vaginal/Anal Sexual Toys Subject of (Sexual)11.741.20
Teal Eyes11.721.20
Footjob Engages in (Sexual)11.721.19
Sports Shoes Clothes11.721.19
Quickie Fix Subject of (Sexual)21.081.19
Vaginal Fingering Subject of (Sexual)21.081.19
Boobjob Engages in (Sexual)21.071.17
Boots Clothes11.681.16
Collar Clothes11.661.15
Maid's Headdress Clothes11.621.13
Apron Clothes11.581.10
Bondage Sex Subject of (Sexual)11.581.09
Sex in Water Engages in (Sexual)11.561.08
Big Breast Sizes Body11.551.08
Pregnant Sex Engages in (Sexual)11.531.06
Blowjob Engages in (Sexual)30.761.06
Maid's Dress Clothes11.511.05
School Uniform Clothes30.751.05
Pissing Engages in (Sexual)11.471.02
Shoulder-length Hair20.921.01
Younger Sister Role11.441.00
Pantyhose Clothes11.420.99
Gloves Clothes11.410.98
Tank Top Clothes11.410.98
Masturbation Engages in (Sexual)11.390.97
Bathroom Sex Engages in (Sexual)11.390.96
Tsurime Eyes11.380.96
Red Hair11.320.92
Waist Length+ Hair20.810.89
Red Eyes11.200.83
Violet Hair11.190.83
Ribbon Hair Tie Clothes11.190.83
Anal Sex Subject of (Sexual)11.190.82
Standing Sex Subject of (Sexual)11.180.81
Outdoor Sex Engages in (Sexual)11.160.80
Twin Tails Hair11.130.78
Tareme Eyes11.110.77
Ponytail Hair11.100.76
Green Eyes11.020.70
Sidehair Hair10.980.68
Cowgirl Subject of (Sexual)10.950.66
Doggy Style Subject of (Sexual)10.920.64
Brown Eyes10.900.63
Blond Hair10.890.62
Brown Hair10.680.47
Pale Body10.370.26