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Summary

The protagonist, Makoto Sakurai, is a high school student. One day, his new neighbour, Atsushi Uchiyama, tells him an shocking secret about his family: he has a secret sexual relationship with his own mother. For him, it's completely normal. But ever since, Makoto's way of looking at his mother, and at his friends, has changed. Then, one day, Makoto's father has to leave for an extended business trip, leaving Makoto alone with his mother. Makoto feels something vaguely unsettling, and his concerns turn out to be a reality. That day, when he comes back from school, his mother is waiting for him completely naked, ready to start an incestuous relationship with her son. And it looks like his friends are in a similar situation!

Nozoki Seikatsu ~Bijin Oyako no Ana to Ana!~
Nozoki Seikatsu ~Bijin Oyako no Ana to Ana!~
NAN%
Tags
  • American Heroine
  • Voyeurism
  • Blood-related Aunt/Nephew Incest
  • Fictional Modern Day Japanese Countryside
  • Protagonist's Aunt as a Heroine
Rating 5.8521 Users
Rankan Club
Rankan Club
NAN%
Tags
  • Swinging
  • Consensual Group Sex of One Female and Several Males
  • Late Branching Plot
  • Group Sex of Multiple Females and Males
  • Cosplay
Rating 6.3724 Users
Shojo Mama
Shojo Mama
NAN%
Tags
  • Non-blood-related Mother/Son Incest
  • Futanari on Male
  • Clumsy Heroine
  • Domicile
  • Cross-dressing
Rating 6.2420 Users
Mama to Boku no Karada no Shikumi Okaa-san ni Chitsunai Shasei Shitara Oyakoukou na Sekai
Mama to Boku no Karada no Shikumi Okaa-san ni Chitsunai Shasei Shitara Oyakoukou na Sekai
NAN%
Tags
  • Elementary School
  • Elementary School Student Protagonist
  • Shotacon Heroine
  • Sex Involving Smegma
  • Child Protagonist
Rating 7.1890 Users
Dekachin Kozou
Dekachin Kozou
NAN%
Tags
  • Mischievous Protagonist
  • Obacon
  • Rape by Shota
  • Shota Protagonist
  • Straight Shotacon
Rating 6.93136 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 7.1723 Users
Uwaki Tsuma ~Kyonyuu Hitozuma Midare Manshon~
Uwaki Tsuma ~Kyonyuu Hitozuma Midare Manshon~
NAN%
Tags
  • Shimaidon
  • Non-twin Heroine Sisters
  • Homemaker Protagonist
  • Protagonist in Relationship
  • Married Heroine
Rating 6.4824 Users
Motto! Himitsu Taiken
Motto! Himitsu Taiken
NAN%
Tags
  • Shotacon
  • Shota Protagonist
  • Blood-related Cousin Incest
  • Lolicon
  • Design Story
Rating 6.5531 Users
Yagai Gakushuu 2
Yagai Gakushuu 2
NAN%
Tags
  • Shotacon Heroine
  • Blind Choices
  • Summer Camp
  • Straight Shotacon
  • Fictional Modern Day Japanese Island
Rating 6.5986 Users
Juicy Age
Juicy Age
NAN%
Tags
  • Oppai Loli Heroine
  • Shota Protagonist
  • Central Heroine
  • Heroine with Beauty Mark
  • Promiscuous Heroine
Rating 6.7738 Users
Mama Shibori 2 (Mama Shibori no Jijou)
Mama Shibori 2 (Mama Shibori no Jijou)
NAN%
Tags
  • Child Protagonist
  • Shota Protagonist
  • Straight Shotacon
  • Protagonist's Blood-related Mother as a Heroine
  • Excessive Semen
Rating 7.3952 Users
Bosei ~Mama Club~
Bosei ~Mama Club~
NAN%
Tags
  • Protagonist's Non-blood-related Mother as a Heroine
  • Non-blood-related Mother/Son Incest
  • Mother Support Character
  • Shota Protagonist
  • Straight Shotacon
Rating 6.6751 Users
Boy Meets Wives
Boy Meets Wives
NAN%
Tags
  • Middle School Student Protagonist
  • Infidelity
  • Completion Status Indicator
  • Heroine with Children
  • Short Sexual Scenes
Rating 6.7527 Users
Zoku Mama Club
Zoku Mama Club
NAN%
Tags
  • Shota Protagonist
  • Straight Shotacon
  • Rimming Handjob
  • Sex at Work
  • Consumption of Pornography
Rating 6.2839 Users
Lucky Sukebe na Ore no Nichijou ~Bijin na Hahaoya to Miboujin ga Doukyo Shite Ore ni Sematte Kuru Ken~
Lucky Sukebe na Ore no Nichijou ~Bijin na Hahaoya to Miboujin ga Doukyo Shite Ore ni Sematte Kuru Ken~
NAN%
Tags
  • Protagonist's Blood-related Mother as a Heroine
  • Blood-related Mother/Son Incest
  • Widow Heroine
  • BDSM
  • Only Adult Heroines
Rating 6.6339 Users
Mama Club Sankan
Mama Club Sankan
NAN%
Tags
  • Shotacon
  • Protagonist's Blood-related Mother as a Heroine
  • Shotacon Heroine
  • Mother Support Character
  • Mother/Son Romance
Rating 6.9365 Users
Ijikuri Mama
Ijikuri Mama
NAN%
Tags
  • Fake Choices
  • Shotacon
  • Disabled Protagonist
  • Blood-related Mother/Son Incest
  • Straight Shotacon
Rating 5.7740 Users
Boku no Himitsu Taiken
Boku no Himitsu Taiken
NAN%
Tags
  • Straight Shotacon
  • Blood-related Cousin Incest
  • Shotacon
  • Meaningless Choices
  • Blood-related Aunt/Nephew Incest
Rating 6.6132 Users
Bitchin Beach ~Risei Buttobi! Bukkake Nakadashi Hamehame Ahe Natsu Monogatari~
Bitchin Beach ~Risei Buttobi! Bukkake Nakadashi Hamehame Ahe Natsu Monogatari~
NAN%
Tags
  • Promiscuous Heroine
  • Beach
  • Summer
  • Heroine with Crotchless Clothing
  • No "Keep Voice on Click" Option
Rating 6.2223 Users
Yagai Gakushuu
Yagai Gakushuu
NAN%
Tags
  • Summer Camp
  • Muted Obscenities
  • Promiscuity
  • Shotacon Heroine
  • Short Sexual Scenes
Rating 6.44214 Users
Mama no Sakuranbo Gari♪
Mama no Sakuranbo Gari♪
NAN%
Tags
  • Shotacon Heroine
  • Nympho Protagonist
  • Infidelity
  • Heroine with Garter Belt
  • Incest
Rating 5.8231 Users
Mousugu Natsuyasumi!
Mousugu Natsuyasumi!
NAN%
Tags
  • Promiscuity
  • Consensual Group Sex of One Female and Several Males
  • Shota Protagonist
  • Shotacon Heroine
  • Straight Shotacon
Rating 6.38159 Users
Yarasete! Teacher ~Gakuen Ryokou~
Yarasete! Teacher ~Gakuen Ryokou~
NAN%
Tags
  • Shota Protagonist
  • Straight Shotacon
  • Amusement Park
  • School Nurse Heroine
  • Onsen
Rating 6.1545 Users
Yarasete! Teacher
Yarasete! Teacher
NAN%
Tags
  • Straight Shotacon
  • School Nurse Support Character
  • Shota Protagonist
  • Perverted Protagonist
  • School
Rating 6.3331 Users
Boku no "Natsuyasumi" Himitsu Taiken
Boku no "Natsuyasumi" Himitsu Taiken
47%
Tags
  • Landlady Heroine
  • Straight Shotacon
  • Blood-related Cousin Incest
  • Blood-related Aunt/Nephew Incest
  • Heroine with Tan Lines
Rating 6.8922 Users
Matty
Matty
47%
Tags
  • Shotacon
  • Protagonist's Aunt as a Heroine
  • Shota Protagonist
  • Straight Shotacon
  • Short Sexual Scenes
Rating 6.8929 Users
Zoku Mama Club
Zoku Mama Club
46%
Tags
  • Shota Protagonist
  • Straight Shotacon
  • Rimming Handjob
  • Sex at Work
  • Consumption of Pornography
Rating 6.2839 Users
Boy Meets Wives
Boy Meets Wives
46%
Tags
  • Middle School Student Protagonist
  • Infidelity
  • Completion Status Indicator
  • Heroine with Children
  • Short Sexual Scenes
Rating 6.7527 Users
Bosei ~Mama Club~
Bosei ~Mama Club~
44%
Tags
  • Protagonist's Non-blood-related Mother as a Heroine
  • Non-blood-related Mother/Son Incest
  • Mother Support Character
  • Shota Protagonist
  • Straight Shotacon
Rating 6.6751 Users
Juicy Age
Juicy Age
42%
Tags
  • Oppai Loli Heroine
  • Shota Protagonist
  • Central Heroine
  • Heroine with Beauty Mark
  • Promiscuous Heroine
Rating 6.7738 Users
Mama Shibori 2 (Mama Shibori no Jijou)
Mama Shibori 2 (Mama Shibori no Jijou)
42%
Tags
  • Child Protagonist
  • Shota Protagonist
  • Straight Shotacon
  • Protagonist's Blood-related Mother as a Heroine
  • Excessive Semen
Rating 7.3952 Users
Motto! Himitsu Taiken
Motto! Himitsu Taiken
38%
Tags
  • Shotacon
  • Shota Protagonist
  • Blood-related Cousin Incest
  • Lolicon
  • Design Story
Rating 6.5531 Users
Yagai Gakushuu 2
Yagai Gakushuu 2
37%
Tags
  • Shotacon Heroine
  • Blind Choices
  • Summer Camp
  • Straight Shotacon
  • Fictional Modern Day Japanese Island
Rating 6.5986 Users
Mama Club Sankan
Mama Club Sankan
37%
Tags
  • Shotacon
  • Protagonist's Blood-related Mother as a Heroine
  • Shotacon Heroine
  • Mother Support Character
  • Mother/Son Romance
Rating 6.9365 Users
Boku no Himitsu Taiken
Boku no Himitsu Taiken
34%
Tags
  • Straight Shotacon
  • Blood-related Cousin Incest
  • Shotacon
  • Meaningless Choices
  • Blood-related Aunt/Nephew Incest
Rating 6.6132 Users
Yagai Gakushuu
Yagai Gakushuu
33%
Tags
  • Summer Camp
  • Muted Obscenities
  • Promiscuity
  • Shotacon Heroine
  • Short Sexual Scenes
Rating 6.44214 Users
Mousugu Natsuyasumi!
Mousugu Natsuyasumi!
31%
Tags
  • Promiscuity
  • Consensual Group Sex of One Female and Several Males
  • Shota Protagonist
  • Shotacon Heroine
  • Straight Shotacon
Rating 6.38159 Users
Yarasete! Teacher
Yarasete! Teacher
26%
Tags
  • Straight Shotacon
  • School Nurse Support Character
  • Shota Protagonist
  • Perverted Protagonist
  • School
Rating 6.3331 Users
Mite Kudasaimasu?
Mite Kudasaimasu?
26%
Tags
  • Protagonist's Blood-related Mother as a Heroine
  • Blood-related Mother/Son Incest
  • Medical Doctor Heroine
  • Fingering
  • Infidelity
Rating 5.7033 Users
Mama ★ Camp ~Mama to Issho ni Shizen e Kaerou~
Mama ★ Camp ~Mama to Issho ni Shizen e Kaerou~
25%
Tags
  • Summer Camp
  • Incest Romance
  • Heroine's Mother as a Heroine
  • Mother/Son Romance
  • Protagonist's Non-blood-related Mother as a Heroine
Rating 6.9758 Users
Summer☆Camp
Summer☆Camp
25%
Tags
  • Shotacon Heroine
  • Summer Camp
  • Popular Protagonist
  • Promiscuity
  • Heroine with Swimsuits
Rating 6.0931 Users
Tsuma x Heaven
Tsuma x Heaven
25%
Tags
  • Infidelity
  • Only Non-Virgin Heroines
  • Promiscuous Heroine
  • Adult Heroine
  • Naked Heroine with Apron
Rating 6.5722 Users
Yarasete! Teacher Change
Yarasete! Teacher Change
25%
Tags
  • Perverted Friend
  • Hetare Protagonist
  • Feet Licking
  • Shota Protagonist
  • School Life Comedy
Rating 6.4937 Users
Shin Yarasete! Teacher
Shin Yarasete! Teacher
25%
Tags
  • Shimaidon
  • Oyakodon
  • Shota Protagonist
  • Non-twin Heroine Sisters
  • Principal Heroine
Rating 6.7337 Users
Boku no Maman Sagashi ~Mama o Tazunetara... 8nin no Kyonyuu Tsuma Deshita~
Boku no Maman Sagashi ~Mama o Tazunetara... 8nin no Kyonyuu Tsuma Deshita~
25%
Tags
  • More Than Seven Heroines
  • Non-blood-related Mother/Son Incest
  • Protagonist's Non-blood-related Mother as a Heroine
  • Consensual Group Sex of One Female and Several Males
  • Prostitute Heroine
Rating 6.4931 Users
Midara na Mansion
Midara na Mansion
24%
Tags
  • Janitor Protagonist
  • Promiscuous Heroine
  • Apartment Building
  • Married Heroine
  • Adult Heroine
Rating 6.7121 Users
Najimi no Oba-chan ~Batsuichi Jukujo to Inran Miboujin~
Najimi no Oba-chan ~Batsuichi Jukujo to Inran Miboujin~
24%
Tags
  • Widow Heroine
  • Heroine with Armpit Hair
  • Heroine with Kimono
  • Dildos
  • Rope Bondage
Rating 6.8922 Users
Ijikuri Mama 2
Ijikuri Mama 2
24%
Tags
  • Shotacon
  • Straight Shotacon
  • Protagonist's Blood-related Mother as a Heroine
  • Shota Protagonist
  • Blood-related Mother/Son Incest
Rating 5.4234 Users

Mama! Tsuma? 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 (20 total)

NameScoreImportanceWeight
Open Relationship3.002.878.61
Protagonist's Non-blood-related Mother as a Heroine2.502.175.41
Shota Protagonist2.501.854.63
Straight Shotacon2.501.824.55
Netorase2.002.234.46
Blowbang2.002.214.43
Blood-related Mother/Son Incest2.331.854.31
Mother Support Character2.331.784.15
Heroine with Children2.001.913.82
Heroine Having Sex with Others2.501.523.81
Wake-up Sex2.001.813.62
Reverse Netorase1.003.323.32
Modern Day2.001.573.15
Adult Heroine2.671.143.04
Modern Day Japan2.001.322.65
Swinging1.002.572.57
Shotacon1.252.012.51
Heroine with Sexual Experience2.001.222.43
Protagonist with a Face2.000.641.28
ADV2.000.150.29

Traits (105 total)

NameCharactersImportanceWeight
Consensual Group Sex of One Female and Several Males Engages in (Sexual)62.484.83
Group Sex of Multiple Females and Males Engages in (Sexual)61.913.72
Blowbang Subject of (Sexual)23.283.61
Sex with Children Engages in (Sexual)32.493.45
Incest Engages in (Sexual)61.472.86
Wedding Ring Clothes32.002.77
Single Parent Role22.522.77
Spit-roast Engages in (Sexual)22.452.69
Facesitting Subject of (Sexual)22.352.58
Breast Smothering Subject of (Sexual)13.702.56
Handjob Subject of (Sexual)31.752.43
Missionary Engages in (Sexual)31.742.41
Nipple Sucking Engages in (Sexual)31.702.36
Mother Role41.462.35
Pharmacist Role13.382.34
Doggy Style Engages in (Sexual)31.692.34
Rimming Handjob Subject of (Sexual)13.242.24
Butterfly Engages in (Sexual)22.022.22
Neighbor Role22.002.19
Sex in Water Engages in (Sexual)31.562.17
Vaginal Gaping Engages in (Sexual)21.952.14
Blowjob Subject of (Sexual)31.522.11
Energetic Personality31.522.11
Nursing Handjob Subject of (Sexual)13.012.09
Quickie Fix Engages in (Sexual)21.882.07
Honest Personality21.842.02
Son Role21.822.00
Rimming Handjob Engages in (Sexual)12.811.95
Bathroom Sex Engages in (Sexual)31.391.92
Nipple Sucking Subject of (Sexual)31.381.92
Reverse Missionary Subject of (Sexual)21.731.91
Ball-cupping Subject of (Sexual)12.751.90
PE Teacher Role12.751.90
Kid Body31.371.90
Breast Smothering Engages in (Sexual)12.641.83
Vaginal Fingering Engages in (Sexual)21.621.78
Nursing Handjob Engages in (Sexual)12.531.76
Sixty-nine Engages in (Sexual)31.261.74
Cunnilingus Engages in (Sexual)21.551.71
Quiet Personality12.461.70
Blowbang Engages in (Sexual)12.441.69
Hard Worker Personality21.541.69
Student Role21.491.63
Reverse Missionary Engages in (Sexual)12.361.63
French Kiss Engages in (Sexual)21.491.63
Ball-cupping Engages in (Sexual)12.341.62
Office Worker Role12.321.61
Housewife Role12.301.60
Infidelity Subject of12.291.59
Black Eyes21.421.56
Observant Personality12.241.56
Missionary Subject of (Sexual)31.121.55
Reverse Cowgirl Engages in (Sexual)12.221.54
Spoons Engages in (Sexual)12.221.54
Widow Role12.201.53
Footjob Subject of (Sexual)12.181.51
Half-orphan Role12.111.46
Shopkeeper Role12.091.45
Anal Fingering Engages in (Sexual)12.051.42
Anilingus Subject of (Sexual)12.051.42
Anilingus Engages in (Sexual)12.011.39
Facesitting Engages in (Sexual)11.971.37
Friend Role21.201.32
Standing Sex Engages in (Sexual)11.871.30
Butterfly Subject of (Sexual)21.171.29
Handjob Engages in (Sexual)21.161.27
Husband Role11.801.25
Infidelity Engages in11.801.24
Spit-roast Subject of (Sexual)11.751.21
Proactive Personality11.721.19
Footjob Engages in (Sexual)11.721.19
Cowgirl Engages in (Sexual)11.721.19
Quickie Fix Subject of (Sexual)21.081.19
Anal Fingering Subject of (Sexual)11.711.19
Vaginal Fingering Subject of (Sexual)21.081.19
Father Role11.671.16
Spoons Subject of (Sexual)11.671.16
Relaxed Personality11.641.13
Reverse Cowgirl Subject of (Sexual)11.631.13
Wife Role11.541.06
Blowjob Engages in (Sexual)30.761.06
Cowgirl Subject of (Sexual)20.951.05
Doggy Style Subject of (Sexual)20.931.02
Smart Personality11.461.01
Suit Clothes11.441.00
Not a Virgin Role11.420.99
Not Sexually Involved Engages in (Sexual)11.360.94
High School Student Role20.850.93
Adult Body11.350.93
Childhood Friend Role11.260.87
Friendly Personality11.220.85
Violet Hair11.190.83
Blue Hair11.190.83
School Uniform Clothes20.750.83
Standing Sex Subject of (Sexual)11.180.82
Cunnilingus Subject of (Sexual)11.160.81
Glasses Clothes11.080.75
Kind Personality11.030.71
Virgin Sex Engages in (Sexual)10.850.59
Black Hair10.810.56
Blue Eyes10.800.56
Brown Hair10.680.47
Short Hair10.610.42
Slim Body10.580.40
Pale Body10.370.26