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.

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
Nozoki Seikatsu ~Bijin Oyako no Ana to Ana!~
Nozoki Seikatsu ~Bijin Oyako no Ana to Ana!~
NAN%
Tags
  • Voyeurism
  • Blood-related Aunt/Nephew Incest
  • Fictional Modern Day Japanese Countryside
  • Protagonist's Aunt as a Heroine
  • Masturbation with Object
Rating 5.8421 Users
Tsuma to Musuko ni Barete wa Ikenai Haitoku no Binetsu ~Ayamachi no Mitsuai 2~
Tsuma to Musuko ni Barete wa Ikenai Haitoku no Binetsu ~Ayamachi no Mitsuai 2~
NAN%
Tags
  • In-law Incest
  • Non-blood-related Father/Daughter Incest
  • Netori
  • Protagonist with Children
  • Onsen
Rating 6.3020 Users
Bokura no Himitsu Kichi Daisakusen ~Escape Hitonatsu no Omoide~
Bokura no Himitsu Kichi Daisakusen ~Escape Hitonatsu no Omoide~
NAN%
Tags
  • Exhibitionism
  • Promiscuity
  • Masturbation with Object
  • Transfer Student Protagonist
  • Heroine with a Fang
Rating 6.8241 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
Doki! Namaiki Idol Kairaku Ochi Special! ~Nakadashi Jiyuu, Makura mo Aru yo~
Doki! Namaiki Idol Kairaku Ochi Special! ~Nakadashi Jiyuu, Makura mo Aru yo~
NAN%
Tags
  • Idol Heroine
  • Rape with Blackmail
  • Manager Protagonist
  • Sex at Work
  • Onsen
Rating 5.9020 Users
Shukubo no Uzuki 2 ~Ureta Hitozuma kara Tadayou "Onna" no Iroka~
Shukubo no Uzuki 2 ~Ureta Hitozuma kara Tadayou "Onna" no Iroka~
NAN%
Tags
  • Principal Heroine
  • Sex Involving Menstruation
  • Single Hole Double Penetration (obsolete)
  • Timid Heroine
  • Only Non-Virgin Heroines
Rating 7.3654 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
  • Only Older Heroines
  • 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
Rating 6.4831 Users
Kikenbi OK! Harande Sisters
Kikenbi OK! Harande Sisters
NAN%
Tags
  • Heroine with Tan Lines
  • Inbreeding
  • Protagonist's Blood-related Sister as a Heroine
  • Blood-related Brother/Sister Incest
  • Changeable Font
Rating 6.1821 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 6.9660 Users
Ijikuri Mama
Ijikuri Mama
NAN%
Tags
  • Fake Choices
  • Shotacon
  • Disabled Protagonist
  • Blood-related Mother/Son Incest
  • Straight Shotacon
Rating 5.7640 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 6.9620 Users
Anedori ~Ochiteiku Onee-chan o Tasukerarenai Boku~
Anedori ~Ochiteiku Onee-chan o Tasukerarenai Boku~
NAN%
Tags
  • Protagonist's Sister as a Heroine
  • Netorare Type B
  • Only Bad Endings
  • Defloration by Others
  • Only Blood-related Heroines
Rating 6.1720 Users
Suki na Dake Soku Hame & Tanetsuke Shite Yorokobareru Sekai
Suki na Dake Soku Hame & Tanetsuke Shite Yorokobareru Sekai
NAN%
Tags
  • Politician Heroine
  • Sex Under the Necessity
  • Human Childbirth
  • Defloration During Common Route
  • Impregnation
Rating 6.4928 Users
Kazoku o Shokusu to Iu koto
Kazoku o Shokusu to Iu koto
NAN%
Tags
  • Protagonist's Aunt as a Heroine
  • Blood-related Aunt/Nephew Incest
  • Incest
  • Cousin Incest
  • Inbreeding
Rating 5.9623 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 6.6973 Users
Yarasete! Teacher Treasure Story
Yarasete! Teacher Treasure Story
NAN%
Tags
  • Tsundere Heroine
  • Teacher Heroine
  • Bathroom Sex
  • Adult Heroine
  • Standing Sex
Rating 6.0627 Users
Summer☆Camp
Summer☆Camp
NAN%
Tags
  • Shotacon Heroine
  • Summer Camp
  • Popular Protagonist
  • Promiscuity
  • Heroine with Swimsuits
Rating 6.0732 Users
Kayoinbo ~Waga Ko no Geshuku de Onna ni Modoru Haha~
Kayoinbo ~Waga Ko no Geshuku de Onna ni Modoru Haha~
NAN%
Tags
  • Blood-related Aunt/Nephew Incest
  • Obacon
  • Only Older Heroines
  • Protagonist with Phimosis
  • Protagonist's Aunt as a Heroine
Rating 7.09136 Users
Kiss + 100 Kiss Tokku, Shidou Seri
Kiss + 100 Kiss Tokku, Shidou Seri
NAN%
Tags
  • Consensual Group Sex of One Female and Several Males
  • Completely Avoidable Netorare
  • Fictional Modern Day Japanese Countryside
  • Netorare Type A
  • Twin Handjob
Rating 6.5027 Users
Douryou no Oku-san ~Netori Tsuma, Netorare Tsuma~
Douryou no Oku-san ~Netori Tsuma, Netorare Tsuma~
NAN%
Tags
  • Netori
  • Clothed Male Naked Female
  • Love Hotel
  • Wake-up Sex
  • Sex in a Vehicle
Rating 7.0626 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 5.6526 Users
Oyako Mix Ijiri ~Mucchiri Haha to Binyuu na Musume no Inniku Kaihatsu
Oyako Mix Ijiri ~Mucchiri Haha to Binyuu na Musume no Inniku Kaihatsu
NAN%
Tags
  • Tutor Protagonist
  • Oyakodon Ending
  • Romancing a Family
  • Netori
  • Popular Protagonist
Rating 5.6823 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 6.2753 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
  • Footjob
  • Dormitory Manager Protagonist
  • P.E. Teacher Heroine
  • Cheerleader Heroine
  • Principal Heroine
Rating 6.5632 Users
Yarasete! Teacher Sotsugyou
Yarasete! Teacher Sotsugyou
35%
Tags
  • Only Older Heroines
  • Heroine with Glasses
  • Teacher Heroine
  • Single Ending
  • Student Protagonist
Rating 5.9927 Users
Suki na Dake Soku Hame & Tanetsuke Shite Yorokobareru Sekai
Suki na Dake Soku Hame & Tanetsuke Shite Yorokobareru Sekai
35%
Tags
  • Politician Heroine
  • Sex Under the Necessity
  • Human Childbirth
  • Defloration During Common Route
  • Impregnation
Rating 6.4928 Users
Anedori ~Ochiteiku Onee-chan o Tasukerarenai Boku~
Anedori ~Ochiteiku Onee-chan o Tasukerarenai Boku~
34%
Tags
  • Protagonist's Sister as a Heroine
  • Netorare Type B
  • Only Bad Endings
  • Defloration by Others
  • Only Blood-related Heroines
Rating 6.1720 Users
Ero Onsen ~Shinjin Okami no Machigaidarake no Omotenashi~
Ero Onsen ~Shinjin Okami no Machigaidarake no Omotenashi~
33%
Tags
  • Rounin Protagonist
  • Onsen
  • Consensual Group Sex of One Female and Several Males
  • Tribadism on Penis
  • Soapy Massage
Rating 6.9620 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 6.9660 Users
Ijikuri Mama
Ijikuri Mama
32%
Tags
  • Fake Choices
  • Shotacon
  • Disabled Protagonist
  • Blood-related Mother/Son Incest
  • Straight Shotacon
Rating 5.7640 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~
32%
Tags
  • Only Older Heroines
  • 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
Rating 6.4831 Users
Kikenbi OK! Harande Sisters
Kikenbi OK! Harande Sisters
31%
Tags
  • Heroine with Tan Lines
  • Inbreeding
  • Protagonist's Blood-related Sister as a Heroine
  • Blood-related Brother/Sister Incest
  • Changeable Font
Rating 6.1821 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~
31%
Tags
  • Shotacon
  • Aunt/Nephew Incest
  • Straight Shotacon
  • Mother/Son Incest
  • Blood-related Aunt/Nephew Incest
Rating 6.6973 Users
Summer☆Camp
Summer☆Camp
31%
Tags
  • Shotacon Heroine
  • Summer Camp
  • Popular Protagonist
  • Promiscuity
  • Heroine with Swimsuits
Rating 6.0732 Users
Kiss + 100 Kiss Tokku, Shidou Seri
Kiss + 100 Kiss Tokku, Shidou Seri
30%
Tags
  • Consensual Group Sex of One Female and Several Males
  • Completely Avoidable Netorare
  • Fictional Modern Day Japanese Countryside
  • Netorare Type A
  • Twin Handjob
Rating 6.5027 Users
Ijikuri Mama 3
Ijikuri Mama 3
30%
Tags
  • Unavoidable Harem Ending
  • Heroine with Tan Lines
  • Shotacon
  • Inbreeding
  • Protagonist's Blood-related Mother as a Heroine
Rating 5.6526 Users
In
In'en no Yu ~Sandai no Okami-tachi to no Mikkou~
30%
Tags
  • Obacon
  • Landlady Heroine
  • In-law Incest
  • Romancing a Family
  • Heroine with Grandchildren
Rating 6.2753 Users
Ijikuri Mama 2
Ijikuri Mama 2
29%
Tags
  • Shotacon
  • Straight Shotacon
  • Protagonist's Blood-related Mother as a Heroine
  • Shota Protagonist
  • Blood-related Mother/Son Incest
Rating 5.4134 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~
29%
Tags
  • Janitor Protagonist
  • Sex Wearing Panties On Face
  • Highly Animated Sprites
  • P.E. Teacher Heroine
  • Body Smell Fetish
Rating 6.6866 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~
29%
Tags
  • Mother/Son Incest
  • Only Adult Heroines
  • Masochist Heroine
  • Clothed Male Naked Female
  • Pregnancy Ending
Rating 6.3334 Users
Tsuboi-kun no Switch!
Tsuboi-kun no Switch!
29%
Tags
  • Erotic Massage
  • Lotion Play
  • Shota Protagonist
  • Non-blood-related Mother/Son Incest
  • Leather Bondage
Rating 7.1970 Users
Mama Shibori 2 (Mama Shibori no Jijou)
Mama Shibori 2 (Mama Shibori no Jijou)
29%
Tags
  • Child Protagonist
  • Shota Protagonist
  • Straight Shotacon
  • Protagonist's Blood-related Mother as a Heroine
  • Excessive Semen
Rating 7.3553 Users
Midara na Mansion
Midara na Mansion
29%
Tags
  • Janitor Protagonist
  • Promiscuous Heroine
  • Apartment Building
  • Married Heroine
  • Adult Heroine
Rating 6.6322 Users
Shimai to no Amai Seikatsu
Shimai to no Amai Seikatsu
29%
Tags
  • Shimaidon
  • Only Protagonist's Sisters as Heroine(s)
  • Protagonist's Older Sister as a Heroine
  • Shimaidon Ending
  • Protagonist's Younger Sister as a Heroine
Rating 6.3321 Users
Zoku Oku-sama wa Onee-chan!?
Zoku Oku-sama wa Onee-chan!?
28%
Tags
  • Multiplayer Game
  • In-law Incest
  • Sister/Sister Incest
  • Non-blood-related Mother/Son Incest
  • Shimaidon Ending
Rating 6.6025 Users
Boku no xx wa Ryousei-tachi no Tokken Desu!
Boku no xx wa Ryousei-tachi no Tokken Desu!
28%
Tags
  • Dormitory Manager Protagonist
  • School Sports Club Member Heroine
  • Sprite Filter
  • Protagonist with Phimosis
  • Defloration During Common Route
Rating 6.8542 Users
Yarasete! Teacher ~Gakuen Ryokou~
Yarasete! Teacher ~Gakuen Ryokou~
27%
Tags
  • Shota Protagonist
  • Straight Shotacon
  • Amusement Park
  • School Nurse Heroine
  • Onsen
Rating 6.2847 Users

Mama Shibori 3 no Jijou has not appeared in our Steam sample enough to calculate it's similar novels... sorry!
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Tags (60 total)

NameScoreImportanceWeight
Swinging3.002.567.69
Only Older Heroines3.002.076.20
Straight Shotacon3.001.785.34
Shota Protagonist2.501.854.62
Illness2.002.244.49
Heroine with Pubic Hair3.001.484.44
Masturbation with Object2.002.184.36
Medical Doctor Heroine2.002.124.24
Sex Under the Necessity2.001.993.97
Protagonist's Blood-related Sister as a Heroine2.001.963.93
Heroine with Children2.001.893.79
Protagonist's Blood-related Mother as a Heroine2.001.893.77
Blood-related Mother/Son Incest2.001.843.69
Heroine with Beauty Mark2.001.803.60
Excessive Semen2.001.663.32
Single Bodyjob1.003.303.30
Handjob2.001.533.05
Masturbation2.001.513.02
Blood-related Brother/Sister Incest2.001.492.99
Group Sex of Multiple Females and Males2.001.482.96
Perverted Heroine2.001.422.84
Adult Heroine2.501.132.83
Intercrural Sex2.001.352.70
Boobjob2.001.342.69
Reverse Cowgirl2.001.342.67
Big Breast Sizes Heroine2.001.332.66
Female Ejaculation2.001.282.56
Student Protagonist2.001.272.54
Single Handjob2.001.242.49
Heroine with Sexual Experience2.001.212.42
Vibrators2.001.162.32
Lesbian Sex2.001.162.32
Blowjob2.001.142.28
Consumption of Pornography1.002.262.26
Heroine with Glasses2.001.112.22
Sixty-nine2.001.082.16
Standing Sex2.001.062.13
Naked Sprites2.001.062.12
Teacher Heroine1.501.372.06
Student Heroine2.001.012.01
Nukige3.000.661.97
Missionary Position2.000.951.90
Single Blowjob2.000.951.90
Cunnilingus2.000.941.87
Group Sex of One Male and Several Females2.000.911.83
Mutual Masturbation1.001.761.76
Cowgirl2.000.851.69
Heroine with Big Breasts2.000.841.68
Third-person Narrative1.001.661.66
Doggy Style2.000.811.62
Female Domination1.001.441.44
Vaginal Masturbation1.001.361.36
Anal Penetration1.001.341.34
Twin Blowjob1.001.291.29
Sexual Content2.000.641.28
Protagonist with a Face2.000.631.26
Bathroom Sex1.001.191.19
ADV2.000.150.29
2.000.000.00
2.000.000.00

Traits (113 total)

NameCharactersImportanceWeight
Sex with Children Engages in (Sexual)32.483.43
Group Sex of Multiple Females and Males Engages in (Sexual)51.893.39
Bisexual Role41.913.08
Non-penetrative Sex Engages in (Sexual)22.652.92
Parent-Teacher Association Member Role14.002.77
Housewife Role22.312.54
Incest Engages in (Sexual)41.472.36
Parent Act Role13.212.23
Female Ejaculation Engages in (Sexual)41.352.16
Facesitting Engages in (Sexual)21.962.15
Cunnilingus Engages in (Sexual)31.552.14
Mutual Masturbation Engages in (Sexual)21.932.12
Reverse Spitroast Subject of (Sexual)21.842.02
Blouse Clothes31.462.02
Onahole Subject of (Sexual)12.841.97
Infidelity Engages in21.791.96
Group Sex of One Male and Several Females Engages in (Sexual)41.161.86
Reverse Spitroast Engages in (Sexual)12.591.79
Vaginal Masturbation Engages in (Sexual)21.631.79
Sixty-nine Engages in (Sexual)31.261.75
Penile Masturbation Engages in (Sexual)12.421.68
Facesitting Subject of (Sexual)12.341.62
Cunnilingus Subject of (Sexual)31.161.61
Twin Blowjob Subject of (Sexual)12.311.60
Mother Role21.451.60
Handjob Engages in (Sexual)31.151.60
Divorcee Role12.291.59
Twin Blowjob Engages in (Sexual)21.451.59
Leggings Clothes12.251.56
Black Eyes21.411.55
Missionary Subject of (Sexual)31.121.55
Masturbation Engages in (Sexual)21.401.54
Reverse Cowgirl Engages in (Sexual)12.221.54
Not a Virgin Role21.401.53
Big Breasts Body31.101.52
Bathroom Sex Engages in (Sexual)21.381.52
Flustered Personality12.121.47
Pubic Hair Hair21.341.47
Voyeurism Engages in (Sexual)12.111.46
Tominagi Engages in (Sexual)12.101.45
Medical Doctor Role12.091.45
Altruistic Personality12.081.44
Short Body12.051.42
Neighbor Role12.001.38
Vaginal Object Insertion Subject of (Sexual)11.961.36
Full Brother Role11.951.35
Antenna Hair11.941.34
Voyeurism Subject of (Sexual)11.921.33
Cowgirl Subject of (Sexual)30.951.32
Younger Brother Role11.901.32
Quickie Fix Engages in (Sexual)11.881.30
Boobjob Subject of (Sexual)11.861.29
Strict Personality11.831.27
Sitting Sex Engages in (Sexual)11.821.26
Son Role11.811.25
Mature Personality11.811.25
Lab Coat Clothes11.791.24
Anal Sex Engages in (Sexual)11.761.22
Handjob Subject of (Sexual)11.751.21
Missionary Engages in (Sexual)11.741.21
Mischievous Personality11.721.19
Cowgirl Engages in (Sexual)11.711.19
Reserved Personality11.711.18
Outgoing Personality11.711.18
Shorts Clothes11.681.16
Doggy Style Engages in (Sexual)11.681.16
Reverse Cowgirl Subject of (Sexual)11.631.13
Small Breasts Body11.621.12
Kind Personality21.021.12
Shy Personality11.621.12
Pervert Personality11.611.12
Older Sister Role11.561.08
Full Sister Role11.561.08
Blowjob Engages in (Sexual)30.761.06
Pendant Necklace Clothes11.521.05
Blowjob Subject of (Sexual)11.521.05
Young-adult Body30.751.04
Daughter Role11.441.00
Brown Eyes20.900.99
Earrings Clothes11.420.98
Hair Tie Clothes11.400.97
Blunt Bangs Hair11.390.97
Tsurime Eyes11.380.96
Kid Body11.380.95
Hosome Eyes11.370.95
Virgin Sex Engages in (Sexual)20.850.94
Tominagi Subject of (Sexual)11.350.94
Wavy Hair11.350.94
Bukkake Subject of (Sexual)11.350.94
Pink Hair11.340.93
Ahoge Hair11.330.92
Black Hair20.800.88
Parted in Middle Hair11.240.86
Friendly Personality11.210.84
Long Hair20.750.82
Anal Sex Subject of (Sexual)11.190.82
Shirt Clothes11.160.80
Twin Tails Hair11.140.79
Ponytail Hair11.100.76
Brown Hair20.690.75
Glasses Clothes11.090.75
Quickie Fix Subject of (Sexual)11.080.75
Boobjob Engages in (Sexual)11.070.74
Sitting Sex Subject of (Sexual)11.060.74
Miniskirt Clothes11.060.74
Sidehair Hair10.980.68
Short Hair20.610.67
Pale Body50.370.66
Doggy Style Subject of (Sexual)10.920.64
Shoulder-length Hair10.920.64
Blue Eyes10.810.56
School Uniform Clothes10.770.53
Teen Body10.620.43