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Summary

The protagonist, Narusawa Yuu, is a beautiful boy with a delicate appearance, admired by female students but only interested in older women. One summer day, he falls in love with his best friend's mother, a married woman named Reiko with an excessive amount of pheromones. Yuu's strong desire is reciprocated by Reiko, who is also unsatisfied with her sex life with her older husband. They soon cross the generation gap and become very close. Reiko's dangerous and seductive sister, Tomoka, who becomes alluring when drunk, also gets involved in their triangle love affair which blooms during summer vacation. The story follows the forbidden love of Yusuke and his questionable decisions.

Shimaizuma Marriage Disk - Shimaizuma Bubuzuke
Shimaizuma Marriage Disk - Shimaizuma Bubuzuke
NAN%
Tags
  • Asian-style Manor
  • Heroine With Kansai Accent
  • Childishly Violent Heroine
  • Married Heroine
  • Central Heroine
Rating 7.4320 Users
Ore ga Aishita Hitozuma ~Emiko~
Ore ga Aishita Hitozuma ~Emiko~
NAN%
Tags
  • Completely Avoidable Rape
  • Heroine with Huge Breasts
  • Pregnancy Ending
  • Soapy Massage
  • Love Hotel
Rating 6.5634 Users
Ip~pai Amaete ne♪ ~Chiisaku Natte Yasashii Kasumi Onee-chan ni Osewa Saretsukusu Iyasare Kozukuri~
Ip~pai Amaete ne♪ ~Chiisaku Natte Yasashii Kasumi Onee-chan ni Osewa Saretsukusu Iyasare Kozukuri~
NAN%
Tags
  • Shotacon Heroine
  • Shota Protagonist
  • Oneesan-type Heroine
  • Straight Shotacon
  • Naked Heroine with Apron
Rating 6.5920 Users
Tsumamigui
Tsumamigui
NAN%
Tags
  • Apartment Building
  • Dating Simulation
  • Central Heroine
  • Gauge Display
  • Sexual Scenes with Gameplay
Rating 6.6273 Users
Toraba!
Toraba!
NAN%
Tags
  • Romancing a Family
  • Swimming Club
  • Class President Heroine
  • Foolish Friend
  • Oyakodon Ending
Rating 6.8824 Users
Kamen no Goumonshi
Kamen no Goumonshi
NAN%
Tags
  • Heroine with Armor
  • Fighting Princess Heroine
  • Orcs
  • Sexual Slavery
  • Heroine with Leotard
Rating 6.0223 Users
Trouble Home! ~Giri no Haha to Imouto wa Koigataki~
Trouble Home! ~Giri no Haha to Imouto wa Koigataki~
NAN%
Tags
  • Oyakodon Ending
  • Heroine with Ahoge
  • Non-blood-related Mother/Son Incest
  • Protagonist's Non-blood-related Mother as a Heroine
  • Non-blood-related Incest
Rating 6.9136 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
Hitozuma Dorei Kissa 2
Hitozuma Dorei Kissa 2
NAN%
Tags
  • Rape with Blackmail
  • Blackmail
  • Waitress Heroine
  • Lactation During Sex
  • Group Sex of Multiple Females and Males
Rating 5.7922 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
Jukuren Ganbou ~Himeta Omoi to Midara na Ai no Katachi~
Jukuren Ganbou ~Himeta Omoi to Midara na Ai no Katachi~
NAN%
Tags
  • Businesswoman Heroine
  • Multiple Credit Rolls
  • Twin Footjob
  • Pure Love Story
  • Sex at Work
Rating 6.9224 Users
Shimaizuma ~Shimaizuma 3~
Shimaizuma ~Shimaizuma 3~
NAN%
Tags
  • Asian-style Manor
  • Heroine With Kansai Accent
  • Childishly Violent Heroine
  • Unrequited Love
  • Brief Branches Only
Rating 7.3138 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
Hitozuma Onna Kyoushi Seiyoku no Kyoushitsu
Hitozuma Onna Kyoushi Seiyoku no Kyoushitsu
NAN%
Tags
  • Principal Heroine
  • Only Adult Heroines
  • Dirty Talk
  • Cosplay
  • Widow Heroine
Rating 6.1525 Users
Kyonyuu Shokudou Harami Teishoku ~Ore Dake no Ura Menu!?~
Kyonyuu Shokudou Harami Teishoku ~Ore Dake no Ura Menu!?~
NAN%
Tags
  • Heroine with Huge Breasts
  • Widow Heroine
  • Heroine with Children
  • Pure Love Story
  • Heroine's Mother as a Heroine
Rating 6.6126 Users
Hadaka no Ou-sama
Hadaka no Ou-sama
NAN%
Tags
  • Design Story
  • Rags to Riches
  • Seiyuu Heroine
  • Office
  • Hotblooded Heroine
Rating 7.3140 Users
Ryou Seibai! ~Gakuen Bishoujo Seisai Hiroku~
Ryou Seibai! ~Gakuen Bishoujo Seisai Hiroku~
NAN%
Tags
  • Animals
  • School Nurse Heroine
  • Handcuffed Sex
  • Pissing on Others
  • Clamps (BDSM)
Rating 6.7828 Users
Amai Seikatsu -Saikou no Gibo to Saikou no Gishimai-
Amai Seikatsu -Saikou no Gibo to Saikou no Gishimai-
NAN%
Tags
  • Non-blood-related Incest
  • Non-blood-related Mother/Son Incest
  • Protagonist's Non-blood-related Mother as a Heroine
  • Non-blood-related Brother/Sister Incest
  • Protagonist's Non-blood-related Sister as a Heroine
Rating 7.3330 Users
Onee-chan Eroero Chuuihou ~Aieki no Daikouzui~
Onee-chan Eroero Chuuihou ~Aieki no Daikouzui~
NAN%
Tags
  • Oneesan-type Heroine
  • Twin Boobjob
  • Harem Ending
  • Brocon Heroine
  • Blood-related Brother/Sister Incest
Rating 6.5522 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
Midara na Mansion
Midara na Mansion
NAN%
Tags
  • Janitor Protagonist
  • Promiscuous Heroine
  • Apartment Building
  • Married Heroine
  • Adult Heroine
Rating 6.7121 Users
Hitozuma♪ Kasumi-san ~Oyako to Kyoudou Seikatsu~
Hitozuma♪ Kasumi-san ~Oyako to Kyoudou Seikatsu~
NAN%
Tags
  • Aunt/Niece Incest
  • Protagonist's Aunt as a Heroine
  • Aunt/Nephew Incest
  • Blood-related Aunt/Nephew Incest
  • Heroine with Flat Chest (Non-Loli)
Rating 7.3134 Users
Koukai ~Makan no Kokuin~
Koukai ~Makan no Kokuin~
NAN%
Tags
  • Religious Heroine
  • Non-twin Heroine Sisters
  • Sexual Slavery (Choukyou Variation)
  • Student Council President Heroine
  • Nun Heroine
Rating 7.1321 Users
Enzai no Koujo Aria
Enzai no Koujo Aria
NAN%
Tags
  • Royal Protagonist
  • Double Handjob
  • Pillory Sex
  • Rape Involving Drugs
  • Nipple Insertion
Rating 6.0225 Users
Hitozuma Dorei Keikaku
Hitozuma Dorei Keikaku
45%
Tags
  • Urination Fetish
  • Dramatic Love Triangle
  • Revenge
  • Heroine with Garter Belt
  • Protagonist's Sister as a Support Character
Rating 6.9124 Users
Aneboku ~Onee-chan wa Bijin 3 Shimai~
Aneboku ~Onee-chan wa Bijin 3 Shimai~
44%
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
Hitozuma Onna Kyoushi Seiyoku no Kyoushitsu
Hitozuma Onna Kyoushi Seiyoku no Kyoushitsu
39%
Tags
  • Principal Heroine
  • Only Adult Heroines
  • Dirty Talk
  • Cosplay
  • Widow Heroine
Rating 6.1525 Users
Shin Onna Kyoushi Yuuwaku Shinro Shidoushitsu
Shin Onna Kyoushi Yuuwaku Shinro Shidoushitsu
38%
Tags
  • Protagonist with Health Issues
  • School Nurse Support Character
  • School Nurse Heroine
  • Heroine with Sport Bloomers
  • Remote-controlled Vibrator
Rating 6.6926 Users
Shimaizuma ~Shimaizuma 3~
Shimaizuma ~Shimaizuma 3~
36%
Tags
  • Asian-style Manor
  • Heroine With Kansai Accent
  • Childishly Violent Heroine
  • Unrequited Love
  • Brief Branches Only
Rating 7.3138 Users
Hitozuma♪ Kasumi-san 2 ~Oku-sama - Miboujin Owner to Kyoudou Seikatsu~
Hitozuma♪ Kasumi-san 2 ~Oku-sama - Miboujin Owner to Kyoudou Seikatsu~
35%
Tags
  • Only Adult Heroines
  • Vaginal Gaping
  • Widow Heroine
  • Stockings
  • Sexual Cosplay
Rating 7.1720 Users
Jukuren Ganbou ~Himeta Omoi to Midara na Ai no Katachi~
Jukuren Ganbou ~Himeta Omoi to Midara na Ai no Katachi~
35%
Tags
  • Businesswoman Heroine
  • Multiple Credit Rolls
  • Twin Footjob
  • Pure Love Story
  • Sex at Work
Rating 6.9224 Users
Najimi no Oba-chan ~Batsuichi Jukujo to Inran Miboujin~
Najimi no Oba-chan ~Batsuichi Jukujo to Inran Miboujin~
35%
Tags
  • Widow Heroine
  • Heroine with Armpit Hair
  • Heroine with Kimono
  • Dildos
  • Rope Bondage
Rating 6.8822 Users
Hitozuma Dorei Kissa 2
Hitozuma Dorei Kissa 2
34%
Tags
  • Rape with Blackmail
  • Blackmail
  • Waitress Heroine
  • Lactation During Sex
  • Group Sex of Multiple Females and Males
Rating 5.7922 Users
Hadaka no Ou-sama
Hadaka no Ou-sama
34%
Tags
  • Design Story
  • Rags to Riches
  • Seiyuu Heroine
  • Office
  • Hotblooded Heroine
Rating 7.3140 Users
Amai Seikatsu -Saikou no Gibo to Saikou no Gishimai-
Amai Seikatsu -Saikou no Gibo to Saikou no Gishimai-
34%
Tags
  • Non-blood-related Incest
  • Non-blood-related Mother/Son Incest
  • Protagonist's Non-blood-related Mother as a Heroine
  • Non-blood-related Brother/Sister Incest
  • Protagonist's Non-blood-related Sister as a Heroine
Rating 7.3330 Users
Koitsuma Biyori ~Yukino-san wa Hitozuma Kanrinin~
Koitsuma Biyori ~Yukino-san wa Hitozuma Kanrinin~
34%
Tags
  • Divorcee Heroine
  • Apartment Building
  • Track Display
  • University Student Protagonist
  • Heroine with Children
Rating 7.0746 Users
Hitozuma♪ Kasumi-san ~Oyako to Kyoudou Seikatsu~
Hitozuma♪ Kasumi-san ~Oyako to Kyoudou Seikatsu~
33%
Tags
  • Aunt/Niece Incest
  • Protagonist's Aunt as a Heroine
  • Aunt/Nephew Incest
  • Blood-related Aunt/Nephew Incest
  • Heroine with Flat Chest (Non-Loli)
Rating 7.3134 Users
Enzai no Koujo Aria
Enzai no Koujo Aria
33%
Tags
  • Royal Protagonist
  • Double Handjob
  • Pillory Sex
  • Rape Involving Drugs
  • Nipple Insertion
Rating 6.0225 Users
Gibo no Milk wa Mitsu no Aji ~Ippai Nonde, Amaete ne~
Gibo no Milk wa Mitsu no Aji ~Ippai Nonde, Amaete ne~
32%
Tags
  • Non-blood-related Mother/Son Incest
  • Adult Breast Feeding
  • Only Protagonist's Relatives as Heroine(s)
  • Netori
  • University Student Protagonist
Rating 6.4420 Users
Tap~puri Ijitte Ageru♪ ~Chiisaku Natte Cool Beauty na Kikyou Onee-chan ni Shiborare Tsukusu Itazura Kozukuri~
Tap~puri Ijitte Ageru♪ ~Chiisaku Natte Cool Beauty na Kikyou Onee-chan ni Shiborare Tsukusu Itazura Kozukuri~
32%
Tags
  • Shota Protagonist
  • Straight Shotacon
  • Handjob
  • Anilingus
  • Impregnation
Rating 6.3821 Users
Danchi Wife ~Hitozuma Nude Model no Kenshin~
Danchi Wife ~Hitozuma Nude Model no Kenshin~
31%
Tags
  • Painter Protagonist
  • Heroine in Relationship with Other(s)
  • Widow Heroine
  • Harem Ending
  • Threesome Ending
Rating 7.0228 Users
Onee-san ☆ Hara Mix
Onee-san ☆ Hara Mix
29%
Tags
  • Shinigami Heroine
  • Dormitory Manager Heroine
  • Sex Under the Necessity
  • Impregnation
  • Widow Heroine
Rating 6.7725 Users
Hitozuma Gui ~Manbiki G-man Chijoku Nikki~
Hitozuma Gui ~Manbiki G-man Chijoku Nikki~
29%
Tags
  • Married Heroine
  • Heroine with Inverted Nipples
  • No "Keep Voice on Click" Option
  • Unlockable Harem Ending
  • Rape with Blackmail
Rating 6.9448 Users
Majo-gari no Kishi ~Jinkaku Ten
Majo-gari no Kishi ~Jinkaku Ten'i no Ori~
29%
Tags
  • Medieval Fantasy
  • Brother/Sister Incest
  • Body Swapping
  • Gaping
  • Incest
Rating 6.0823 Users
Gibo no Toiki ~Haitokushin ni Tadayou Haha no Iroka~
Gibo no Toiki ~Haitokushin ni Tadayou Haha no Iroka~
28%
Tags
  • Shopkeeper Heroine
  • Heroine with Anal Hair
  • In-law Incest
  • Heroine with Armpit Hair
  • Stockings
Rating 7.5750 Users
Beppin Mama ~Love Love Boshi Yuugi~
Beppin Mama ~Love Love Boshi Yuugi~
28%
Tags
  • Blood-related Aunt/Nephew Incest
  • Protagonist's Aunt as a Heroine
  • Straight Shotacon
  • Heroine with Anal Hair
  • Big Ass Heroine
Rating 6.3744 Users
Furin Kazoku ~Goriyou wa Keikakuteki ni~
Furin Kazoku ~Goriyou wa Keikakuteki ni~
28%
Tags
  • Reverse Netorare
  • Heroine with Beauty Mark
  • Avoidable Netorare (obsolete)
  • Romancing a Family
  • In-law Incest
Rating 7.2224 Users
Dorei Shigan Site ~Hitozuma Shouko no Kiroku~
Dorei Shigan Site ~Hitozuma Shouko no Kiroku~
28%
Tags
  • Sexual Slavery (Consensual)
  • Pornography
  • Sexual Slavery
  • Play Piercing
  • Body Piercing
Rating 6.5329 Users

Boku no Hitozuma Onee-san ~M na Hitozuma x S na Miboujin~ 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 (43 total)

NameScoreImportanceWeight
Shota Protagonist3.001.855.55
Straight Shotacon3.001.825.45
Sister/Sister Incest2.002.384.76
Heroine with Garter Belt2.002.114.23
Widow Heroine2.001.973.94
Stockings2.001.923.84
Early Sexual Content3.001.223.67
Married Heroine2.001.422.84
Cock and Ball Torture Devices1.002.782.78
Cock and Ball Torture1.002.392.39
Bathroom Sex2.001.192.37
Adult Heroine2.001.132.27
Female Domination1.501.442.16
Double Dildos1.002.082.08
Big Breast Sizes Heroine1.501.311.97
Nukige3.000.651.95
Twin Blowjob1.501.291.93
Cunnilingus2.000.931.86
Piss Drinking1.001.831.83
Wake-up Sex1.001.811.81
Dildos1.001.731.73
Cowgirl2.000.841.67
Bondage1.501.111.66
Sexual Blindfold1.001.531.53
Anilingus1.001.471.47
Double Penetration (Group Sex)1.001.451.45
Group Sex of One Male and Several Females1.500.921.37
Reverse Cowgirl1.001.331.33
High Sexual Content1.251.051.31
Multiple Penetration1.001.281.28
Doggy Style1.500.801.20
Lesbian Sex1.001.151.15
Quickie Fix Position1.001.111.11
Sex in Public Places1.001.091.09
Sixty-nine1.001.071.07
Standing Sex1.001.051.05
Outdoor Sex1.000.990.99
Boobjob0.751.330.99
Missionary Position1.000.940.94
Blowjob0.751.120.84
Male Protagonist2.000.300.60
Anal Penetration0.331.320.44
ADV2.000.140.29

Traits (62 total)

NameCharactersImportanceWeight
Double-ended Dildo Subject of (Sexual)22.102.31
Cock and Ball Torture Engages in (Sexual)12.861.99
Garter Belt Stockings Clothes21.621.77
Big Breast Sizes Body21.551.71
Group Sex Engages in (Sexual)21.511.66
Microskirt Clothes12.351.63
Incest Engages in (Sexual)21.471.61
Chain Jewellery Clothes12.311.60
Twin Blowjob Engages in (Sexual)21.451.59
Nightgown Clothes12.281.58
Pissing on Others Engages in (Sexual)12.271.57
Widow Role12.201.53
Bathroom Sex Engages in (Sexual)21.391.52
Lesbian Sex Engages in (Sexual)21.381.52
Pissing Subject of (Sexual)12.181.51
Slave Collar Clothes12.091.45
Corset Clothes12.061.43
Anilingus Engages in (Sexual)12.011.39
Anal Sex Subject of (Sexual)21.191.31
Multiple Penetration Subject of (Sexual)11.871.29
Sexual Blindfold Subject of (Sexual)11.851.29
Cunnilingus Subject of (Sexual)21.161.28
Pendant Earrings Clothes11.841.27
Outdoor Sex Engages in (Sexual)21.161.27
Short Shorts Clothes11.751.21
Pajamas Clothes11.751.21
Boobjob Engages in (Sexual)21.071.17
Crop Top Clothes11.661.15
Double Penetration (Group Sex) Subject of (Sexual)11.651.14
Reverse Cowgirl Subject of (Sexual)11.631.13
Older Sister Role11.561.08
Wife Role11.531.06
Cowgirl Subject of (Sexual)20.951.05
Pissing Engages in (Sexual)11.471.02
Blouse Clothes11.461.01
Younger Sister Role11.441.00
Tank Top Clothes11.410.98
Pleated Skirt Clothes11.390.97
Masturbation Engages in (Sexual)11.390.97
Knee-high Socks Clothes11.380.96
Skirt Clothes11.340.93
Curtained Hair11.300.90
Waist Length+ Hair20.810.89
Sixty-nine Engages in (Sexual)11.260.87
Parted in Middle Hair11.250.87
Blowjob Engages in (Sexual)20.760.84
Young-adult Body20.760.84
Blue Hair11.190.83
Standing Sex Subject of (Sexual)11.180.81
Butterfly Subject of (Sexual)11.170.81
Shirt Clothes11.160.80
Handjob Engages in (Sexual)11.160.80
Quickie Fix Subject of (Sexual)11.080.75
Vaginal Fingering Subject of (Sexual)11.080.75
Miniskirt Clothes11.060.74
Parted to Side Hair11.050.73
Straight Hair10.940.65
Doggy Style Subject of (Sexual)10.920.64
Brown Eyes10.900.63
Blue Eyes10.800.56
Brown Hair10.680.47
Pale Body20.370.40