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Summary

The protagonist of this story is the son of the protagonist from the previous work, and he is worried that he too will suffer from the same condition as his father - hyperspermia. One day, he finds an erotic book in his sister's room, which causes his genitalia to enlarge. Soon, his mother finds out and takes him to the hospital, where he is diagnosed with hyperspermia. The treatment prescribed is to release more sperm. The mother and sister do everything they can to help him, and even the mother of his classmate and a female doctor at the hospital assist him.

Mama, Onani Suru Kurai Nara Boku ga Shite Ageru yo!
Mama, Onani Suru Kurai Nara Boku ga Shite Ageru yo!
NAN%
Tags
  • Armbinder
  • Heroine with Catsuit
  • Sexual Slavery (Consensual)
  • Protagonist's Blood-related Mother as a Heroine
  • Sexual Roleplay
Rating 5.9129 Users
Musuko ga Osewa ni Narimashite ~Miboujin Kanrinin-san to Kaa-san to~
Musuko ga Osewa ni Narimashite ~Miboujin Kanrinin-san to Kaa-san to~
NAN%
Tags
  • Mother/Son Incest
  • Only Adult Heroines
  • Masochist Heroine
  • Clothed Male Naked Female
  • Pregnancy Ending
Rating 6.5736 Users
Ijikuri Mama 2
Ijikuri Mama 2
NAN%
Tags
  • Shotacon
  • Straight Shotacon
  • Protagonist's Blood-related Mother as a Heroine
  • Consumption of Pornography
  • Shota Protagonist
Rating 5.5132 Users
Ore ga Aishita Hitozuma ~Emiko~
Ore ga Aishita Hitozuma ~Emiko~
NAN%
Tags
  • Completely Avoidable Rape
  • Pregnancy Ending
  • Soapy Massage
  • Only Non-Virgin Heroines
  • Love Hotel
Rating 6.5932 Users
Musuko no Inbou ni Chietsu Suru Haha ~ Mama o Gifu ni Watasanai!
Musuko no Inbou ni Chietsu Suru Haha ~ Mama o Gifu ni Watasanai!
NAN%
Tags
  • Protagonist's Blood-related Mother as a Heroine
  • Blood-related Mother/Son Incest
  • Netori
  • Only Older Heroines
  • Only Blood-related Heroines
Rating 5.9626 Users
Boku no Daisuki na Oba-san
Boku no Daisuki na Oba-san
NAN%
Tags
  • May-December Romance
  • Incest Romance
  • Blood-related Aunt/Nephew Incest
  • Protagonist's Aunt as a Heroine
  • Protagonist with Phimosis
Rating 6.8654 Users
Inbo Rannyuu Soukan ~Boku no Seishi de, Mama o Ippai ni Shiteageru~
Inbo Rannyuu Soukan ~Boku no Seishi de, Mama o Ippai ni Shiteageru~
NAN%
Tags
  • Protagonist's Son as a Hero
  • Pornography
  • Protagonist with Big Breasts
  • Only Blood-related Heroines
  • Modern Day Japan
Rating 5.9639 Users
Itoshi no Haha to Wakai Oba ~Boshi Katei ni Oba ga Korogarikonde Kita Kekka www~
Itoshi no Haha to Wakai Oba ~Boshi Katei ni Oba ga Korogarikonde Kita Kekka www~
NAN%
Tags
  • Shotacon
  • Aunt/Nephew Incest
  • Straight Shotacon
  • Mother/Son Incest
  • Blood-related Aunt/Nephew Incest
Rating 6.7170 Users
In
In'en no Yu ~Sandai no Okami-tachi to no Mikkou~
NAN%
Tags
  • Obacon
  • Landlady Heroine
  • Non-blood-related Incest
  • Romancing a Family
  • Heroine with Grandchildren
Rating 6.3048 Users
Mama ★ Camp ~Mama to Issho ni Shizen e Kaerou~
Mama ★ Camp ~Mama to Issho ni Shizen e Kaerou~
NAN%
Tags
  • Summer Camp
  • Incest Romance
  • Heroine's Mother as a Heroine
  • Mother/Son Romance
  • Protagonist's Non-blood-related Mother as a Heroine
Rating 6.9958 Users
Yarasete! Teacher Change
Yarasete! Teacher Change
NAN%
Tags
  • Perverted Friend
  • Feet Licking
  • Shota Protagonist
  • School Life Comedy
  • Straight Shotacon
Rating 6.5037 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~
NAN%
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 6.4630 Users
Ijikuri Mama 3
Ijikuri Mama 3
NAN%
Tags
  • Unavoidable Harem Ending
  • Heroine with Tan Lines
  • Shotacon
  • Inbreeding
  • Protagonist's Blood-related Mother as a Heroine
Rating 5.8125 Users
Suki na Dake Soku Hame & Tanetsuke Shite Yorokobareru Sekai
Suki na Dake Soku Hame & Tanetsuke Shite Yorokobareru Sekai
NAN%
Tags
  • Politician Heroine
  • Human Childbirth
  • Sex Under the Necessity
  • Defloration During Common Route
  • Impregnation
Rating 6.4326 Users
Pure x Lover -Ane to Osananajimi to H na Kankei-
Pure x Lover -Ane to Osananajimi to H na Kankei-
NAN%
Tags
  • Quadruple+ Blowjob
  • Urethral Intercourse
  • Reverse Piledriver
  • Sadist Heroine
  • Blood-related Mother/Daughter Incest
Rating 6.6229 Users
Boku no xx wa Ryousei-tachi no Tokken Desu!
Boku no xx wa Ryousei-tachi no Tokken Desu!
NAN%
Tags
  • Dormitory Manager Protagonist
  • Sprite Filter
  • School Sports Club Member Heroine
  • Protagonist with Phimosis
  • Defloration During Common Route
Rating 6.8442 Users
Iyashinbo ~Sekai de Ichiban Suki na Hito~
Iyashinbo ~Sekai de Ichiban Suki na Hito~
NAN%
Tags
  • Mother/Son Romance
  • Blood-related Aunt/Nephew Incest
  • Protagonist's Aunt as a Heroine
  • Protagonist's Blood-related Mother as a Heroine
  • Shota Protagonist
Rating 7.7683 Users
Summer☆Camp
Summer☆Camp
NAN%
Tags
  • Summer Camp
  • Shotacon Heroine
  • Popular Protagonist
  • Promiscuity
  • Heroine with Swimsuits
Rating 6.0730 Users
Yuuwaku Kazoku Ecchi ~Mama to Imouto-tachi no Amai Onedari~
Yuuwaku Kazoku Ecchi ~Mama to Imouto-tachi no Amai Onedari~
NAN%
Tags
  • Mother/Son Incest
  • Incest Romance
  • Only Blood-related Heroines
  • Brother/Sister Incest
  • Blood-related Mother/Son Incest
Rating 6.4329 Users
Nozoki Seikatsu ~Bijin Oyako no Ana to Ana!~
Nozoki Seikatsu ~Bijin Oyako no Ana to Ana!~
NAN%
Tags
  • Voyeurism
  • American Heroine
  • Blood-related Aunt/Nephew Incest
  • Fictional Modern Day Japanese Countryside
  • Protagonist's Aunt as a Heroine
Rating 5.8021 Users
Juku Chichi ~Mama no Karada wa Boku Sen
Juku Chichi ~Mama no Karada wa Boku Sen'you
NAN%
Tags
  • Protagonist's Blood-related Mother as a Heroine
  • Rounin Protagonist
  • Only Older Heroines
  • Only Blood-related Heroines
  • Naked Heroine with Apron
Rating 6.5736 Users
Ero Onsen ~Shinjin Okami no Machigaidarake no Omotenashi~
Ero Onsen ~Shinjin Okami no Machigaidarake no Omotenashi~
NAN%
Tags
  • Rounin Protagonist
  • Onsen
  • Consensual Group Sex of One Female and Several Males
  • Tribadism on Penis
  • Soapy Massage
Rating 6.9720 Users
Gibo to Oba ~Soshite Yuujin no Haha~
Gibo to Oba ~Soshite Yuujin no Haha~
NAN%
Tags
  • Protagonist's Aunt as a Heroine
  • Protagonist's Non-blood-related Mother as a Heroine
  • Non-blood-related Mother/Son Incest
  • Consensual Group Sex of One Female and Several Males
  • Heroine with Kimono
Rating 7.0029 Users
Saimin Paranoia
Saimin Paranoia
NAN%
Tags
  • Chikan Protagonist
  • Molestation on Public Transport
  • Gyaru Heroine
  • Erotic Mind Control
  • Sex in a Vehicle
Rating 6.4425 Users
Gyaku Rape Joshi Ryou ~Semarikuru Onna-tachi ni Shiboritoraretsuzukeru Ore no Hakudakueki~
Gyaku Rape Joshi Ryou ~Semarikuru Onna-tachi ni Shiboritoraretsuzukeru Ore no Hakudakueki~
37%
Tags
  • Dormitory Manager Protagonist
  • Footjob
  • P.E. Teacher Heroine
  • Cheerleader Heroine
  • Principal Heroine
Rating 6.4229 Users
Yarasete! Teacher Sotsugyou
Yarasete! Teacher Sotsugyou
35%
Tags
  • Only Older Heroines
  • Heroine with Glasses
  • Single Ending
  • Teacher Heroine
  • Student Protagonist
Rating 6.0022 Users
Suki na Dake Soku Hame & Tanetsuke Shite Yorokobareru Sekai
Suki na Dake Soku Hame & Tanetsuke Shite Yorokobareru Sekai
34%
Tags
  • Politician Heroine
  • Human Childbirth
  • Sex Under the Necessity
  • Defloration During Common Route
  • Impregnation
Rating 6.4326 Users
Ijikuri Mama 3
Ijikuri Mama 3
33%
Tags
  • Unavoidable Harem Ending
  • Heroine with Tan Lines
  • Shotacon
  • Inbreeding
  • Protagonist's Blood-related Mother as a Heroine
Rating 5.8125 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~
33%
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 6.4630 Users
Mama ★ Camp ~Mama to Issho ni Shizen e Kaerou~
Mama ★ Camp ~Mama to Issho ni Shizen e Kaerou~
32%
Tags
  • Summer Camp
  • Incest Romance
  • Heroine's Mother as a Heroine
  • Mother/Son Romance
  • Protagonist's Non-blood-related Mother as a Heroine
Rating 6.9958 Users
Yarasete! Teacher Change
Yarasete! Teacher Change
32%
Tags
  • Perverted Friend
  • Feet Licking
  • Shota Protagonist
  • School Life Comedy
  • Straight Shotacon
Rating 6.5037 Users
Itoshi no Haha to Wakai Oba ~Boshi Katei ni Oba ga Korogarikonde Kita Kekka www~
Itoshi no Haha to Wakai Oba ~Boshi Katei ni Oba ga Korogarikonde Kita Kekka www~
32%
Tags
  • Shotacon
  • Aunt/Nephew Incest
  • Straight Shotacon
  • Mother/Son Incest
  • Blood-related Aunt/Nephew Incest
Rating 6.7170 Users
In
In'en no Yu ~Sandai no Okami-tachi to no Mikkou~
31%
Tags
  • Obacon
  • Landlady Heroine
  • Non-blood-related Incest
  • Romancing a Family
  • Heroine with Grandchildren
Rating 6.3048 Users
Boku no xx wa Ryousei-tachi no Tokken Desu!
Boku no xx wa Ryousei-tachi no Tokken Desu!
31%
Tags
  • Dormitory Manager Protagonist
  • Sprite Filter
  • School Sports Club Member Heroine
  • Protagonist with Phimosis
  • Defloration During Common Route
Rating 6.8442 Users
Summer☆Camp
Summer☆Camp
31%
Tags
  • Summer Camp
  • Shotacon Heroine
  • Popular Protagonist
  • Promiscuity
  • Heroine with Swimsuits
Rating 6.0730 Users
Nozoki Seikatsu ~Bijin Oyako no Ana to Ana!~
Nozoki Seikatsu ~Bijin Oyako no Ana to Ana!~
31%
Tags
  • Voyeurism
  • American Heroine
  • Blood-related Aunt/Nephew Incest
  • Fictional Modern Day Japanese Countryside
  • Protagonist's Aunt as a Heroine
Rating 5.8021 Users
Ero Onsen ~Shinjin Okami no Machigaidarake no Omotenashi~
Ero Onsen ~Shinjin Okami no Machigaidarake no Omotenashi~
30%
Tags
  • Rounin Protagonist
  • Onsen
  • Consensual Group Sex of One Female and Several Males
  • Tribadism on Penis
  • Soapy Massage
Rating 6.9720 Users
Saimin Paranoia
Saimin Paranoia
30%
Tags
  • Chikan Protagonist
  • Molestation on Public Transport
  • Gyaru Heroine
  • Erotic Mind Control
  • Sex in a Vehicle
Rating 6.4425 Users
Ijikuri Mama
Ijikuri Mama
29%
Tags
  • Fake Choices
  • Shotacon
  • Disabled Protagonist
  • Blood-related Mother/Son Incest
  • Straight Shotacon
Rating 5.7938 Users
Musuko no Tomodachi ni Otosarete ~Aa... Watashi, Hitori no Onna ni Modorimasu~
Musuko no Tomodachi ni Otosarete ~Aa... Watashi, Hitori no Onna ni Modorimasu~
29%
Tags
  • Netorare
  • Discreet Phone Sex
  • Boobs on Glass
  • Married Heroine
  • Sex on Toilet
Rating 6.4126 Users
Zoku Oku-sama wa Onee-chan!?
Zoku Oku-sama wa Onee-chan!?
28%
Tags
  • Sister/Sister Incest
  • Non-blood-related Mother/Son Incest
  • Protagonist's Non-blood-related Mother as a Heroine
  • Shimaidon Ending
  • Protagonist's Wife as a Heroine
Rating 6.7425 Users
Moshimo Youmuin no Oji-san ga Saimin o Oboetara... ~Onna Kyoushi o Midara ni Otosu, Nikuyoku no Houetsu Saimin~
Moshimo Youmuin no Oji-san ga Saimin o Oboetara... ~Onna Kyoushi o Midara ni Otosu, Nikuyoku no Houetsu Saimin~
28%
Tags
  • Janitor Protagonist
  • Sex Wearing Panties On Face
  • Highly Animated Sprites
  • P.E. Teacher Heroine
  • Body Smell Fetish
Rating 6.7360 Users
Najimi no Oba-chan ~Batsuichi Jukujo to Inran Miboujin~
Najimi no Oba-chan ~Batsuichi Jukujo to Inran Miboujin~
28%
Tags
  • Widow Heroine
  • Heroine with Armpit Hair
  • Heroine with Kimono
  • Dildos
  • Rope Bondage
Rating 6.8922 Users
Tsuboi-kun no Switch!
Tsuboi-kun no Switch!
28%
Tags
  • Erotic Massage
  • Lotion Play
  • Shota Protagonist
  • Non-blood-related Mother/Son Incest
  • Leather Bondage
Rating 7.2965 Users
Shin Yarasete! Teacher
Shin Yarasete! Teacher
28%
Tags
  • Shimaidon
  • Oyakodon
  • Shota Protagonist
  • Non-twin Heroine Sisters
  • Principal Heroine
Rating 6.7337 Users
Shinkon Seikatsu
Shinkon Seikatsu
27%
Tags
  • Birthrate Decline
  • Robot Hero
  • Relationship Problems
  • Blood-related Incest
  • Foolish Villain
Rating 7.0280 Users
Musuko no Musuko wa Dare no Mono!? ~Musuko Soudatsu Haha Imouto Sensen~
Musuko no Musuko wa Dare no Mono!? ~Musuko Soudatsu Haha Imouto Sensen~
27%
Tags
  • Oyakodon
  • Mother/Son Romance
  • Blood-related Mother/Daughter Incest
  • Oyakodon Ending
  • Widow Heroine
Rating 6.4840 Users
Kayoinbo ~Waga Ko no Geshuku de Onna ni Modoru Haha~
Kayoinbo ~Waga Ko no Geshuku de Onna ni Modoru Haha~
27%
Tags
  • Obacon
  • Blood-related Aunt/Nephew Incest
  • Protagonist with Phimosis
  • Protagonist's Aunt as a Heroine
  • Mother/Son Romance
Rating 7.13127 Users

Mama Shibori 3 no Jijou 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 (55 total)

NameScoreImportanceWeight
Swinging3.002.587.74
Straight Shotacon3.001.815.43
Shota Protagonist2.501.844.61
Illness2.002.244.48
Heroine with Pubic Hair3.001.494.47
Masturbation with Object2.002.164.32
Medical Doctor Heroine2.002.114.22
Sex Under the Necessity2.001.963.92
Protagonist's Blood-related Mother as a Heroine2.001.913.82
Protagonist's Blood-related Sister as a Heroine2.001.903.80
Blood-related Mother/Son Incest2.001.843.68
Heroine with Beauty Mark2.001.813.61
Single Bodyjob1.003.323.32
Excessive Semen2.001.643.27
Blood-related Brother/Sister Incest2.001.482.96
Group Sex of Multiple Females and Males2.001.472.94
Handjob2.001.472.94
Masturbation2.001.462.91
Adult Heroine2.501.132.83
Intercrural Sex2.001.332.67
Reverse Cowgirl2.001.322.63
Boobjob2.001.292.58
Female Ejaculation2.001.272.54
Big Breast Sizes Heroine2.001.272.54
Single Handjob2.001.272.54
Student Protagonist2.001.242.47
Heroine with Sexual Experience2.001.222.45
Consumption of Pornography1.002.302.30
Vibrators2.001.142.28
Lesbian Sex2.001.142.27
Heroine with Glasses2.001.112.21
Blowjob2.001.082.17
Sixty-nine2.001.062.12
Standing Sex2.001.052.09
Naked Sprites2.001.052.09
Teacher Heroine1.501.352.03
Single Blowjob2.001.001.99
Student Heroine2.000.971.94
Nukige3.000.641.93
Missionary Position2.000.931.86
Cunnilingus2.000.921.85
Group Sex of One Male and Several Females2.000.901.80
Mutual Masturbation1.001.751.75
Third-person Narrative1.001.671.67
Cowgirl2.000.831.65
Doggy Style2.000.791.58
Female Domination1.001.431.43
Vaginal Masturbation1.001.391.39
Protagonist with a Face2.000.661.31
Anal Penetration1.001.281.28
Twin Blowjob1.001.281.28
Sexual Content2.000.611.22
Bathroom Sex1.001.181.18
ADV2.000.140.29
2.000.000.00

Traits (86 total)

NameCharactersImportanceWeight
Group Sex of Multiple Females and Males Engages in (Sexual)51.953.49
Non-penetrative Sex Engages in (Sexual)22.592.84
Cunnilingus Engages in (Sexual)31.562.17
Mutual Masturbation Engages in (Sexual)21.932.12
Blouse Clothes31.482.05
Incest Engages in (Sexual)31.472.04
Reverse Spitroast Subject of (Sexual)21.842.03
Group Sex of One Male and Several Females Engages in (Sexual)41.201.92
Reverse Spitroast Engages in (Sexual)12.611.81
Sixty-nine Engages in (Sexual)31.251.73
Masturbation with Object Engages in (Sexual)12.431.69
Facesitting Subject of (Sexual)12.381.65
Cunnilingus Subject of (Sexual)31.171.62
Twin Blowjob Subject of (Sexual)12.341.62
Big Breast Sizes Body21.471.61
Handjob Engages in (Sexual)31.161.61
Leggings Clothes12.311.60
Twin Blowjob Engages in (Sexual)21.441.58
Black Eyes21.431.57
Reverse Cowgirl Engages in (Sexual)12.251.56
Missionary Subject of (Sexual)31.111.54
Masturbation Engages in (Sexual)21.371.51
Tominagi Engages in (Sexual)12.141.48
Pubic Hair Hair21.341.47
Medical Doctor Role12.101.45
Facesitting Engages in (Sexual)12.001.39
Neighbor Role11.991.38
Full Brother Role11.951.35
Antenna Hair11.921.33
Cowgirl Subject of (Sexual)30.951.32
Younger Brother Role11.901.32
Quickie Fix Engages in (Sexual)11.901.31
Boobjob Subject of (Sexual)11.871.30
Son Role11.831.27
Short (obsolete) Body11.801.25
Lab Coat Clothes11.791.24
Anal Sex Engages in (Sexual)11.771.23
Handjob Subject of (Sexual)11.761.22
Missionary Engages in (Sexual)11.751.21
Mischievous Personality11.741.21
Reserved Personality11.731.20
Cowgirl Engages in (Sexual)11.721.20
Doggy Style Engages in (Sexual)11.701.18
Shorts Clothes11.671.16
Reverse Cowgirl Subject of (Sexual)11.641.14
Full Sister Role11.571.09
Older Sister Role11.551.08
Young-adult Body30.771.07
Blowjob Subject of (Sexual)11.531.06
Pendant Necklace Clothes11.531.06
Blowjob Engages in (Sexual)30.761.05
Mother Role11.471.02
Brown Eyes20.900.99
Earrings Clothes11.420.98
Hair Tie Clothes11.410.98
Blunt Bangs Hair11.400.97
Tsurime Eyes11.380.95
Hosome Eyes11.360.94
Kid Body11.360.94
Wavy Hair11.360.94
Tominagi Subject of (Sexual)11.360.94
Virgin Sex Engages in (Sexual)20.840.92
Pink Hair11.320.92
Ahoge Hair11.310.91
Black Hair20.810.89
Parted in Middle Hair11.260.87
Long Hair20.750.83
Anal Sex Subject of (Sexual)11.190.82
Shirt Clothes11.150.80
Twin Tails Hair11.120.78
Ponytail Hair11.100.76
Glasses Clothes11.080.75
Brown Hair20.680.75
Quickie Fix Subject of (Sexual)11.080.75
Miniskirt Clothes11.070.74
Boobjob Engages in (Sexual)11.060.74
Kind Personality11.040.72
Sidehair Hair10.970.68
Short Hair20.610.67
Pale Body50.370.66
Doggy Style Subject of (Sexual)10.920.64
Shoulder-length Hair10.910.63
Blue Eyes10.800.55
School Uniform Clothes10.730.51
Teen Body10.610.42
40.000.00