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Summary

He failed university entrance exams. Also, he has never had sex with a girl. His sisters now stand up for him! "Ok, we'll give you a lesson!" Like this, they work as his tutor during a day and give him a sex lesson at night... [From ErogeShop]

Anata to Mita Sakura ~Shimaizuma~
Anata to Mita Sakura ~Shimaizuma~
NAN%
Tags
  • Protagonist's Sister-in-Law as a Heroine
  • Hetare Protagonist
  • Pantyjob
  • Widow Heroine
  • Heroine with Kimono
Rating 6.9021 Users
Boku to Sannin no Onee-sama ~Oneesan-tachi to Haramase OK Yome Erabi Dousei Life!~
Boku to Sannin no Onee-sama ~Oneesan-tachi to Haramase OK Yome Erabi Dousei Life!~
NAN%
Tags
  • European Heroine
  • Blood-related Aunt/Nephew Incest
  • Wealthy Protagonist
  • Protagonist's Aunt as a Heroine
  • Heroine with Inverted Nipples
Rating 6.9131 Users
Hani Tsuma Hs ~After Wedding~
Hani Tsuma Hs ~After Wedding~
NAN%
Tags
  • Deredere Heroine
  • Cousin Romance
  • Student-Teacher Romance
  • Class President Heroine
  • Impregnation
Rating 7.6234 Users
In
In'en no Yu ~Sandai no Okami-tachi to no Mikkou~
NAN%
Tags
  • Obacon
  • Landlady Heroine
  • In-law Incest
  • Romancing a Family
  • Heroine with Grandchildren
Rating 6.2050 Users
Tsunagaranai Keitai Denwa -Tadaima Hoka no Otoko to Mechamecha Sex Chuu-
Tsunagaranai Keitai Denwa -Tadaima Hoka no Otoko to Mechamecha Sex Chuu-
NAN%
Tags
  • Protagonist's Fiancee as a Heroine
  • Netorare
  • Clothed Female Naked Male
  • Salaryman Protagonist
  • Netorare Type A
Rating 6.8334 Users
Paizuri Cheerleader VS Sakunyuu Ouendan!
Paizuri Cheerleader VS Sakunyuu Ouendan!
NAN%
Tags
  • Cheerleader Heroine
  • Student Club
  • Harem Ending
  • Heroine with a Fang
  • Non-blood-related Brother/Sister Incest
Rating 7.0337 Users
Bakunyuu Inran Katei Kyoushi
Bakunyuu Inran Katei Kyoushi
NAN%
Tags
  • Heroine with Gigantic Breasts
  • Shotacon
  • Clamps (BDSM)
  • Stockings
  • Shota Protagonist
Rating 7.2444 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
Aneimo Neo ~Second Sisters~
Aneimo Neo ~Second Sisters~
NAN%
Tags
  • Protagonist's Aunt as a Heroine
  • Non-blood-related Mother/Son Incest
  • Protagonist's Non-blood-related Mother as a Heroine
  • Romancing a Family
  • Oneesan-type Heroine
Rating 7.1137 Users
Toraba!
Toraba!
NAN%
Tags
  • Romancing a Family
  • Swimming Club
  • Class President Heroine
  • Foolish Friend
  • Oyakodon Ending
Rating 6.8824 Users
Aneboku ~Onee-chan wa Bijin 3 Shimai~
Aneboku ~Onee-chan wa Bijin 3 Shimai~
NAN%
Tags
  • Brother/Sister Romance
  • Protagonist with Phimosis
  • Romancing a Family
  • Protagonist's Non-blood-related Sister as a Heroine
  • Single Hole Multiple Objects Insertion (obsolete)
Rating 7.1623 Users
Mama no Bonyuu
Mama no Bonyuu
NAN%
Tags
  • Protagonist's Non-blood-related Mother as a Heroine
  • Artist Heroine
  • Artist Protagonist
  • Boobjob
  • Lactation During Sex
Rating 6.4929 Users
Classmate no Okaa-san -Immoral Teacher-
Classmate no Okaa-san -Immoral Teacher-
NAN%
Tags
  • Masturbation with Object
  • Widow Heroine
  • Sexual Fantasizing
  • Heroine with Tights
  • Naked Heroine with Apron
Rating 6.8223 Users
Najimi no Oba-chan ~Batsuichi Jukujo to Inran Miboujin~
Najimi no Oba-chan ~Batsuichi Jukujo to Inran Miboujin~
NAN%
Tags
  • Widow Heroine
  • Heroine with Armpit Hair
  • Heroine with Kimono
  • Dildos
  • Rope Bondage
Rating 6.8822 Users
Sekai ni Otoko wa Jibun Dake, Zensekai no Josei o Ninshin Sasete Jinrui o Sukue! ~Semen Caravan Nintei Soft~
Sekai ni Otoko wa Jibun Dake, Zensekai no Josei o Ninshin Sasete Jinrui o Sukue! ~Semen Caravan Nintei Soft~
NAN%
Tags
  • Protagonist as the Only Male
  • Future Earth
  • Birthrate Decline
  • Bodyguard Heroine
  • Spontaneous Sex Scenes
Rating 5.9122 Users
Danchi Wife ~Hitozuma Nude Model no Kenshin~
Danchi Wife ~Hitozuma Nude Model no Kenshin~
NAN%
Tags
  • Painter Protagonist
  • Heroine in Relationship with Other(s)
  • Widow Heroine
  • Harem Ending
  • Threesome Ending
Rating 7.0228 Users
Yuuwaku Onna Kyoushi ~Ureta Mitsu no Aji~
Yuuwaku Onna Kyoushi ~Ureta Mitsu no Aji~
NAN%
Tags
  • Only Older Heroines
  • Heroine with Children
  • Student-Teacher Romance
  • Obacon
  • School Nurse Heroine
Rating 6.7620 Users
Hitozuma♪ Kasumi-san 2 ~Oku-sama - Miboujin Owner to Kyoudou Seikatsu~
Hitozuma♪ Kasumi-san 2 ~Oku-sama - Miboujin Owner to Kyoudou Seikatsu~
NAN%
Tags
  • Only Adult Heroines
  • Vaginal Gaping
  • Widow Heroine
  • Stockings
  • Sexual Cosplay
Rating 7.1720 Users
Tsuma to Mama to Boin
Tsuma to Mama to Boin
NAN%
Tags
  • Protagonist's Wife as a Heroine
  • Apartment Building
  • Protagonist's Sister-in-Law as a Heroine
  • Heroine with Eyepatch
  • Infidelity
Rating 7.2078 Users
Oshirikko Venus 2
Oshirikko Venus 2
NAN%
Tags
  • Non-penetrative Sex
  • Big Ass Heroine
  • Perverted Protagonist
  • Twin Footjob
  • Sex on a Roof
Rating 7.2533 Users
Shin Onna Kyoushi Yuuwaku Shinro Shidoushitsu
Shin Onna Kyoushi Yuuwaku Shinro Shidoushitsu
NAN%
Tags
  • Protagonist with Health Issues
  • School Nurse Support Character
  • School Nurse Heroine
  • Heroine with Sport Bloomers
  • Remote-controlled Vibrator
Rating 6.6926 Users
Koitsuma Biyori ~Yukino-san wa Hitozuma Kanrinin~
Koitsuma Biyori ~Yukino-san wa Hitozuma Kanrinin~
NAN%
Tags
  • Divorcee Heroine
  • Apartment Building
  • Track Display
  • University Student Protagonist
  • Heroine with Children
Rating 7.0746 Users
Nami no Mani Mani ~Sazanami Shinryoujo~
Nami no Mani Mani ~Sazanami Shinryoujo~
NAN%
Tags
  • Barmaid Heroine
  • Medical Doctor Protagonist
  • Island
  • Sickly Heroine
  • Hetare Protagonist
Rating 7.4028 Users
Ecchi na Onee-san ga Home Helper ni Nattara ~Kyonyuu de Kirei na Onee-san ga Tsukushite Agechau~
Ecchi na Onee-san ga Home Helper ni Nattara ~Kyonyuu de Kirei na Onee-san ga Tsukushite Agechau~
NAN%
Tags
  • Mother/Son Romance
  • Protagonist's Blood-related Mother as a Heroine
  • Clothed Male Naked Female
  • Mother Support Character
  • Blood-related Mother/Son Incest
Rating 5.9026 Users
Ade Chichi ~Tsurime de Midara de Yabai Hisho
Ade Chichi ~Tsurime de Midara de Yabai Hisho
50%
Tags
  • Salaryman Protagonist
  • Office Lady Heroine
  • Co-worker Heroine
  • Arrogant Heroine
  • Only One Good Ending
Rating 5.9915 Users
Taputapu no Kanjuku Oppai ni Kurumarete, Yumemiru You ni Shasei Shitsuzukeru Ore no Yonpaku Itsuka
Taputapu no Kanjuku Oppai ni Kurumarete, Yumemiru You ni Shasei Shitsuzukeru Ore no Yonpaku Itsuka
50%
Tags
  • Ryokan
  • Onsen
  • Heroine with Kimono
  • Unlockable Harem Ending
  • Heroine with Huge Breasts
Rating 6.6216 Users
Najimi no Oba-chan ~Batsuichi Jukujo to Inran Miboujin~
Najimi no Oba-chan ~Batsuichi Jukujo to Inran Miboujin~
49%
Tags
  • Widow Heroine
  • Heroine with Armpit Hair
  • Heroine with Kimono
  • Dildos
  • Rope Bondage
Rating 6.8822 Users
Classmate no Okaa-san -Immoral Teacher-
Classmate no Okaa-san -Immoral Teacher-
49%
Tags
  • Masturbation with Object
  • Widow Heroine
  • Sexual Fantasizing
  • Heroine with Tights
  • Naked Heroine with Apron
Rating 6.8223 Users
Mama no Bonyuu
Mama no Bonyuu
48%
Tags
  • Protagonist's Non-blood-related Mother as a Heroine
  • Artist Heroine
  • Artist Protagonist
  • Boobjob
  • Lactation During Sex
Rating 6.4929 Users
Toraba!
Toraba!
46%
Tags
  • Romancing a Family
  • Swimming Club
  • Class President Heroine
  • Foolish Friend
  • Oyakodon Ending
Rating 6.8824 Users
Aneboku ~Onee-chan wa Bijin 3 Shimai~
Aneboku ~Onee-chan wa Bijin 3 Shimai~
45%
Tags
  • Brother/Sister Romance
  • Protagonist with Phimosis
  • Romancing a Family
  • Protagonist's Non-blood-related Sister as a Heroine
  • Single Hole Multiple Objects Insertion (obsolete)
Rating 7.1623 Users
Itazura ~Boku Dake no Zettai Ryouiki~
Itazura ~Boku Dake no Zettai Ryouiki~
42%
Tags
  • Chikan Heroine
  • Hotel
  • Trains
  • Voiced Thoughts
  • Pregnancy Good Ending
Rating 6.1720 Users
Aneimo Neo ~Second Sisters~
Aneimo Neo ~Second Sisters~
41%
Tags
  • Protagonist's Aunt as a Heroine
  • Non-blood-related Mother/Son Incest
  • Protagonist's Non-blood-related Mother as a Heroine
  • Romancing a Family
  • Oneesan-type Heroine
Rating 7.1137 Users
Danchi Wife ~Hitozuma Nude Model no Kenshin~
Danchi Wife ~Hitozuma Nude Model no Kenshin~
40%
Tags
  • Painter Protagonist
  • Heroine in Relationship with Other(s)
  • Widow Heroine
  • Harem Ending
  • Threesome Ending
Rating 7.0228 Users
Hitozuma♪ Kasumi-san 2 ~Oku-sama - Miboujin Owner to Kyoudou Seikatsu~
Hitozuma♪ Kasumi-san 2 ~Oku-sama - Miboujin Owner to Kyoudou Seikatsu~
40%
Tags
  • Only Adult Heroines
  • Vaginal Gaping
  • Widow Heroine
  • Stockings
  • Sexual Cosplay
Rating 7.1720 Users
Oshirikko Venus 2
Oshirikko Venus 2
39%
Tags
  • Non-penetrative Sex
  • Big Ass Heroine
  • Perverted Protagonist
  • Twin Footjob
  • Sex on a Roof
Rating 7.2533 Users
Koitsuma Biyori ~Yukino-san wa Hitozuma Kanrinin~
Koitsuma Biyori ~Yukino-san wa Hitozuma Kanrinin~
38%
Tags
  • Divorcee Heroine
  • Apartment Building
  • Track Display
  • University Student Protagonist
  • Heroine with Children
Rating 7.0746 Users
Ecchi na Onee-san ga Home Helper ni Nattara ~Kyonyuu de Kirei na Onee-san ga Tsukushite Agechau~
Ecchi na Onee-san ga Home Helper ni Nattara ~Kyonyuu de Kirei na Onee-san ga Tsukushite Agechau~
37%
Tags
  • Mother/Son Romance
  • Protagonist's Blood-related Mother as a Heroine
  • Clothed Male Naked Female
  • Mother Support Character
  • Blood-related Mother/Son Incest
Rating 5.9026 Users
Soukan Yuugi 2
Soukan Yuugi 2
37%
Tags
  • P.E. Teacher Heroine
  • Non-blood-related Mother/Son Incest
  • Blood-related Aunt/Nephew Incest
  • Oyakodon
  • Protagonist's Aunt as a Heroine
Rating 6.9744 Users
boin
boin
37%
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
Tsuma Koukan ~Tanin ni Dakareru Tsuma o Souzou Shite~
Tsuma Koukan ~Tanin ni Dakareru Tsuma o Souzou Shite~
36%
Tags
  • Swinging
  • Protagonist's Wife as a Heroine
  • Twin Boobjob
  • Facesitting
  • Discreet Sex
Rating 6.0017 Users
Junketsu★Megami-sama! "Tanezuke Shite Kudasai, Danna-sama!"
Junketsu★Megami-sama! "Tanezuke Shite Kudasai, Danna-sama!"
36%
Tags
  • Birthrate Decline
  • Shinto Shrine
  • Goddess Heroine
  • Twin Buttjob
  • Group Sex with Clones
Rating 7.7351 Users
Mama Mama!?
Mama Mama!?
35%
Tags
  • Blood-related Mother/Son Incest
  • Grandfather Support Character
  • Protagonist's Blood-related Mother as a Heroine
  • Heroine With Kansai Accent
  • Heroine with Kimono
Rating 7.1325 Users
Milk Junkie 2
Milk Junkie 2
35%
Tags
  • Shimaidon Ending
  • Blood-related Sister/Sister Incest
  • Big Breast Sizes Heroine
  • Soapy Massage
  • Changeable Font
Rating 7.5924 Users
Kyonyuu Onsen Kozukuri no Yu ~Yama no Naka no Hitou de Deatta no wa Bijin Oyako Deshita~
Kyonyuu Onsen Kozukuri no Yu ~Yama no Naka no Hitou de Deatta no wa Bijin Oyako Deshita~
35%
Tags
  • Oyakodon Ending
  • Student Council
  • Onsen
  • Widow Heroine
  • Heroine with Kimono
Rating 6.4032 Users
Lucky ☆ Bird -Ecchi na Kouun... Kore tte Honto ni Lucky ka!?-
Lucky ☆ Bird -Ecchi na Kouun... Kore tte Honto ni Lucky ka!?-
35%
Tags
  • Extremely (un)Lucky Heroine
  • Extremely (un)Lucky Protagonist
  • Goddess Heroine
  • Miko Heroine
  • Oppai Loli Heroine
Rating 6.3021 Users
Ijikuri Mama 3
Ijikuri Mama 3
35%
Tags
  • Unavoidable Harem Ending
  • Heroine with Tan Lines
  • Shotacon
  • Inbreeding
  • Protagonist's Blood-related Mother as a Heroine
Rating 5.6925 Users
Natsu Doki! Harem ~Shinsekitaku de no Nayameru Juken Benkyou~
Natsu Doki! Harem ~Shinsekitaku de no Nayameru Juken Benkyou~
35%
Tags
  • Cousin Incest
  • Sister/Sister Incest
  • Aunt/Nephew Incest
  • Blood-related Sister/Sister Incest
  • Protagonist's Cousin as a Heroine
Rating 7.1543 Users

Boin Shimai no Kojin Jugyou 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 (30 total)

NameScoreImportanceWeight
Oneesan-type Heroine3.001.835.49
Extremely (un)Lucky Protagonist2.002.605.20
Businesswoman Heroine2.002.464.92
Triple Boobjob2.002.394.78
School Sports Club Member Heroine2.002.204.40
Pantyjob2.002.064.11
Only Protagonist's Sisters as Heroine(s)2.001.993.98
Tribadism on Penis2.001.873.73
Genius Heroine2.001.773.53
Deredere Heroine2.001.613.22
Footjob1.501.892.83
Harem Ending2.001.402.81
Intercrural Sex2.001.342.69
Adult Heroine2.001.132.27
Student Protagonist1.501.261.89
Feet Licking1.001.891.89
Group Sex of One Male and Several Females2.000.921.83
Teacher Heroine1.331.371.82
High School Student Heroine2.000.851.69
Facesitting1.001.651.65
Heroine with Swimsuits1.001.641.64
Brother/Sister Incest0.752.051.53
Defloration2.000.761.52
Female Domination1.001.441.44
Big Breast Sizes Heroine1.001.311.31
Nukige2.000.651.30
Imouto-type Heroine0.501.750.87
Male Protagonist2.000.300.60
High Sexual Content0.331.050.35
ADV2.000.140.29

Traits (112 total)

NameCharactersImportanceWeight
Kanendosei Role23.413.75
Triple Boobjob Engages in (Sexual)32.513.48
Micro Bikini Clothes32.213.07
Incest Engages in (Sexual)51.472.63
Full Sister Role41.562.52
Bathroom Sex Engages in (Sexual)51.392.48
Twin Boobjob Engages in (Sexual)31.772.45
Group Sex Engages in (Sexual)41.512.44
Sexual Fantasy Subject of (Sexual)22.222.44
Sport Bloomers Clothes31.722.38
Lacrosse Engages in13.392.35
Tribadism on Penis Engages in (Sexual)22.082.29
Sex in Water Engages in (Sexual)31.562.17
Older Sister Role31.562.16
Mutual Masturbation Engages in (Sexual)21.942.13
Cosplay Engages in21.922.11
Discreet Sex Engages in (Sexual)21.852.04
Intercrural Sex Engages in (Sexual)21.842.03
Skirt Suit Clothes21.741.92
Footjob Engages in (Sexual)21.721.89
Feet Licking Subject of (Sexual)12.601.80
Pantyjob Engages in (Sexual)12.601.80
Sex in Classroom Engages in (Sexual)21.611.76
Feet Licking Engages in (Sexual)12.541.76
Sports Swimsuit Clothes12.491.72
Sitting Sex Subject of (Sexual)41.061.71
Swim Shorts Clothes12.371.64
Spiky Bangs Hair41.001.61
Sexual Fantasy Engages in (Sexual)12.311.60
Teasing Engages in21.441.59
Loner Personality12.261.57
Missionary Subject of (Sexual)31.121.55
Brooch Clothes12.221.54
Public Masturbation Engages in (Sexual)12.211.53
Spats Clothes12.201.52
Tsurime Eyes21.381.52
Teal Hair12.161.50
Management Role12.121.47
Book Items12.121.47
Pink Hair21.331.46
Sports Uniform Clothes12.101.45
Waist Length+ Hair50.811.45
Old Type School Swimsuit Clothes12.091.45
Docile Personality12.041.42
Beret Clothes11.991.38
Sex in Public Places Engages in (Sexual)21.261.38
Genius Personality11.991.38
Virgin Sex Engages in (Sexual)40.851.37
Full Brother Role11.951.35
Taciturn Personality11.941.35
Strange Personality11.941.35
Assertive Personality11.941.34
Masturbation in front of an Audience Engages in (Sexual)11.901.32
Shirt Clothes21.161.27
Handjob Engages in (Sexual)21.161.27
Flirting Engages in11.791.24
Twin Tails Hair21.131.24
Braid Hair11.781.23
Scarf Clothes11.781.23
Hair Flower Clothes11.771.23
Reverse Missionary Subject of (Sexual)11.741.20
Teal Eyes11.721.20
Anal Fingering Subject of (Sexual)11.711.19
Stoic Personality11.701.18
Boobjob Engages in (Sexual)21.071.17
Miniskirt Clothes21.061.17
Spoons Subject of (Sexual)11.671.15
Crop Top Clothes11.661.15
Violet Eyes21.051.15
Thigh-high Stockings Clothes21.041.15
Mini-dress Clothes11.631.13
Reverse Cowgirl Subject of (Sexual)11.631.13
Pervert Personality11.631.13
Maid's Headdress Clothes11.621.13
Pink Eyes11.621.12
University Student Role11.591.10
Teacher Role11.561.08
Pendant Necklace Clothes11.521.05
Energetic Personality11.521.05
Maid's Dress Clothes11.511.05
School Uniform Clothes30.751.05
Green Hair11.481.02
Doggy Style Subject of (Sexual)20.921.02
Blouse Clothes11.461.01
Younger Sister Role11.441.00
Teen Body40.621.00
Earrings Clothes11.420.98
Hair Tie Clothes11.410.97
Tominagi Subject of (Sexual)11.360.94
Ahoge Hair11.320.92
Blue Eyes20.800.88
Belt Clothes11.270.88
Sixty-nine Engages in (Sexual)11.260.87
Parted in Middle Hair11.250.87
Friendly Personality11.220.84
Blowjob Engages in (Sexual)20.760.84
Young-adult Body20.760.84
Violet Hair11.190.83
Ribbon Hair Tie Clothes11.190.83
Anal Sex Subject of (Sexual)11.190.82
Trousers Clothes11.190.82
Standing Sex Subject of (Sexual)11.180.81
Group Sex of One Male and Several Females Engages in (Sexual)11.170.81
Necktie Clothes11.120.77
Vaginal Fingering Subject of (Sexual)11.080.75
Parted to Side Hair11.050.73
Pale Body60.370.72
Kind Personality11.030.71
Short Hair20.610.67
Cowgirl Subject of (Sexual)10.950.66
High School Student Role10.850.59
Brown Hair10.680.47