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Summary

The protagonist's father died when he was young, and he was raised by his mother, a nurse, as a single mother. She is kind, cheerful, and has a lovely body. She has been his ideal woman since he was a child. He became a doctor because he wanted to be with his mother as much as possible by working at the same hospital. He says, "I'm so happy to be working in the same hospital with you". However, the protagonist spends his days feeling depressed due to a series of difficult tasks. His mother, worried about him, invites him to her office one day when she is on duty. Lying on the bed, his mother smiles kindly and seductively, telling him that he can gain experience by using her body. Now, I want you to examine mother's body as much as you want. As if lured by her words, the protagonist reaches out to touch his mother's body. [From official site]

Soul Foundation+
Soul Foundation+
NAN%
Tags
  • Gundam
  • Flat Tints Only
  • Blowjob Duck Face
  • Heroine with Huge Breasts
  • Fan-fiction
Rating 6.9123 Users
Demiparadoxia ∞ Hookerstic - Nanka Hen
Demiparadoxia ∞ Hookerstic - Nanka Hen
NAN%
Tags
  • Prostitute Heroine
  • Pubic Hair Option
  • Hotel
  • Customization
  • Sex Involving Prostitution
Rating 6.1828 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
Toaru Fuufu no Hensai Keikaku
Toaru Fuufu no Hensai Keikaku
NAN%
Tags
  • Debt
  • Netorare Type B
  • Elderly Sex
  • Pubic Hair Option
  • Oyaji Hero
Rating 7.5518 Users
Boku to Nakadashi Onna Kyoushi ~Sensei no Naka wa Seieki Mamire~
Boku to Nakadashi Onna Kyoushi ~Sensei no Naka wa Seieki Mamire~
NAN%
Tags
  • School Dormitory
  • Close-up CGs
  • Pubic Hair Option
  • Transfer Student Protagonist
  • Tribadism
Rating 6.4016 Users
Houkago Saimin Club 3
Houkago Saimin Club 3
NAN%
Tags
  • Chubby Protagonist
  • Erotic Mind Control
  • Mind Control
  • All-girls School
  • Villainous Protagonist
Rating 6.0915 Users
Mashou no Nie 2
Mashou no Nie 2
NAN%
Tags
  • Princess Heroine
  • Fantasy
  • Rape
  • Double Penetration (Group Sex)
  • Vaginal + Anal Tentacle Penetration
Rating 6.4023 Users
Joi-san no Oiitsuke!! ~Ecchi na Shinsatsu Shite Ageru♪~
Joi-san no Oiitsuke!! ~Ecchi na Shinsatsu Shite Ageru♪~
NAN%
Tags
  • Protagonist with Health Issues
  • Medical Doctor Heroine
  • Foreskin Play
  • Sex Involving Food
  • Armpit Licking
Rating 6.8815 Users
Imouto Ninshin 2 ~In-Tai-Mon-Zetsu~
Imouto Ninshin 2 ~In-Tai-Mon-Zetsu~
NAN%
Tags
  • Inbred Protagonist
  • Inbred Heroine
  • Brother/Sister Incest
  • Inbreeding
  • Only Blood-related Heroines
Rating 5.9915 Users
Ore to Kaa-san no Love Choukyou
Ore to Kaa-san no Love Choukyou
NAN%
Tags
  • Vacuum Bed
  • Mother/Son Incest
  • Interactive Touching Game
  • Erotic Mummification
  • Big Ass Heroine
Rating 5.9515 Users
Heaven & Hell ~Nagutte Okasu! Saikyou Ryona Battle!~
Heaven & Hell ~Nagutte Okasu! Saikyou Ryona Battle!~
NAN%
Tags
  • Arena
  • Erotic Beating (Non-Consensual)
  • Duel
  • Violence
  • Fighting Game
Rating 5.5821 Users
Yarasete! Teacher Sotsugyou
Yarasete! Teacher Sotsugyou
NAN%
Tags
  • Only Older Heroines
  • Heroine with Glasses
  • Single Ending
  • Teacher Heroine
  • Student Protagonist
Rating 5.9925 Users
Okaa-san no Ama Ama Time ~Musuko no Yokubou~
Okaa-san no Ama Ama Time ~Musuko no Yokubou~
NAN%
Tags
  • Protagonist's Blood-related Mother as a Heroine
  • Blood-related Mother/Son Incest
  • Interactive Touching Game
  • Chubby Heroine
  • No Character Sprites
Rating 6.0622 Users
Okaa-san no Ama Ama Time ~Poolside de Nanpa Lesson~
Okaa-san no Ama Ama Time ~Poolside de Nanpa Lesson~
NAN%
Tags
  • Protagonist's Blood-related Mother as a Heroine
  • Obacon
  • Interactive Touching Game
  • Blood-related Mother/Son Incest
  • No Character Sprites
Rating 6.2823 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 6.2519 Users
Aniyome Chijoku no Time Sale ~Otto ni wa Ienai, Himitsu no Part~
Aniyome Chijoku no Time Sale ~Otto ni wa Ienai, Himitsu no Part~
NAN%
Tags
  • Body Food
  • Clothed Male Naked Female
  • Rape with Blackmail
  • Sexual Devices
  • Production of Pornography (Amateur)
Rating 6.3412 Users
Yuuwaku no Danchizuma-tachi ~Kairaku ni Oboreru Ureta Niku~
Yuuwaku no Danchizuma-tachi ~Kairaku ni Oboreru Ureta Niku~
NAN%
Tags
  • Obacon
  • Harem Ending with Theme
  • Apartment Building
  • Married Heroine
  • Completion Status Indicator
Rating 6.2727 Users
Yome no Ane ga Kyonyuu Sugite Gaman Dekinai ~Nee-san ga Konna ni Erokatta Nante!
Yome no Ane ga Kyonyuu Sugite Gaman Dekinai ~Nee-san ga Konna ni Erokatta Nante!
NAN%
Tags
  • Protagonist's Sister-in-Law as a Heroine
  • Remote-controlled Vibrator
  • Discreet Phone Sex
  • Soapy Massage
  • Hidden Vibrator
Rating 6.1116 Users
Inshuu Mekage Mura ~Hogami Oba-san no Himitsu~
Inshuu Mekage Mura ~Hogami Oba-san no Himitsu~
NAN%
Tags
  • Blood-related Aunt/Nephew Incest
  • Protagonist's Aunt as a Heroine
  • Shota Protagonist
  • Straight Shotacon
  • Countryside
Rating 6.1828 Users
Bakunyuu Jukujo ni Nusumareta Boku
Bakunyuu Jukujo ni Nusumareta Boku
NAN%
Tags
  • Shota Protagonist
  • Straight Shotacon
  • Heroine with Huge Breasts
  • Breast Smothering
  • Autobukkake
Rating 5.8216 Users
Love Fetish ~Tekoki Hen~
Love Fetish ~Tekoki Hen~
NAN%
Tags
  • Flat Tints Only
  • High Sexual Content
  • Modern Day
  • Perverted Heroine
  • Tsundere Heroine
Rating 6.7723 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
Beppin Mama Omnibus
Beppin Mama Omnibus
NAN%
Tags
  • Obacon
  • Otaku Friend
  • Heroine with Armpit Hair
  • Blood-related Mother/Son Incest
  • Shotacon
Rating 6.6429 Users
Momojiri Taiiku Onna Kyoushi
Momojiri Taiiku Onna Kyoushi
NAN%
Tags
  • Heroine with Tights
  • P.E. Teacher Heroine
  • Braless Heroine
  • Unavoidable Heroine Rape by the Protagonist
  • Lots of Event CGs
Rating 6.2020 Users
Okaa-san no Ama Ama Time ~Ofuro de Massage~
Okaa-san no Ama Ama Time ~Ofuro de Massage~
72%
Tags
  • Protagonist's Blood-related Mother as a Heroine
  • Blood-related Mother/Son Incest
  • Interactive Touching Game
  • Adult Breast Sucking
  • No Character Sprites
Rating 5.5523 Users
Shiawase na Ohime-sama ~Engage wa Kozukuri no Tame ni~
Shiawase na Ohime-sama ~Engage wa Kozukuri no Tame ni~
57%
Tags
  • Palace
  • Princess Heroine
  • Royal Heroine
  • Royal Protagonist
  • Triple Boobjob
Rating 7.3511 Users
Okaa-san no Ama Ama Time ~Poolside de Nanpa Lesson~
Okaa-san no Ama Ama Time ~Poolside de Nanpa Lesson~
49%
Tags
  • Protagonist's Blood-related Mother as a Heroine
  • Obacon
  • Interactive Touching Game
  • Blood-related Mother/Son Incest
  • No Character Sprites
Rating 6.2823 Users
Okaa-san no Ama Ama Time ~Musuko no Yokubou~
Okaa-san no Ama Ama Time ~Musuko no Yokubou~
48%
Tags
  • Protagonist's Blood-related Mother as a Heroine
  • Blood-related Mother/Son Incest
  • Interactive Touching Game
  • Chubby Heroine
  • No Character Sprites
Rating 6.0622 Users
Yarasete! Teacher Sotsugyou
Yarasete! Teacher Sotsugyou
41%
Tags
  • Only Older Heroines
  • Heroine with Glasses
  • Single Ending
  • Teacher Heroine
  • Student Protagonist
Rating 5.9925 Users
Ore to Kaa-san no Love Choukyou
Ore to Kaa-san no Love Choukyou
38%
Tags
  • Vacuum Bed
  • Mother/Son Incest
  • Interactive Touching Game
  • Erotic Mummification
  • Big Ass Heroine
Rating 5.9515 Users
Heaven & Hell ~Nagutte Okasu! Saikyou Ryona Battle!~
Heaven & Hell ~Nagutte Okasu! Saikyou Ryona Battle!~
37%
Tags
  • Arena
  • Erotic Beating (Non-Consensual)
  • Duel
  • Violence
  • Fighting Game
Rating 5.5821 Users
Joi-san no Oiitsuke!! ~Ecchi na Shinsatsu Shite Ageru♪~
Joi-san no Oiitsuke!! ~Ecchi na Shinsatsu Shite Ageru♪~
35%
Tags
  • Protagonist with Health Issues
  • Medical Doctor Heroine
  • Foreskin Play
  • Sex Involving Food
  • Armpit Licking
Rating 6.8815 Users
Imouto Ninshin 2 ~In-Tai-Mon-Zetsu~
Imouto Ninshin 2 ~In-Tai-Mon-Zetsu~
34%
Tags
  • Inbred Protagonist
  • Inbred Heroine
  • Brother/Sister Incest
  • Inbreeding
  • Only Blood-related Heroines
Rating 5.9915 Users
Aniyome Chijoku no Time Sale ~Otto ni wa Ienai, Himitsu no Part~
Aniyome Chijoku no Time Sale ~Otto ni wa Ienai, Himitsu no Part~
34%
Tags
  • Body Food
  • Clothed Male Naked Female
  • Rape with Blackmail
  • Sexual Devices
  • Production of Pornography (Amateur)
Rating 6.3412 Users
Yome no Ane ga Kyonyuu Sugite Gaman Dekinai ~Nee-san ga Konna ni Erokatta Nante!
Yome no Ane ga Kyonyuu Sugite Gaman Dekinai ~Nee-san ga Konna ni Erokatta Nante!
34%
Tags
  • Protagonist's Sister-in-Law as a Heroine
  • Remote-controlled Vibrator
  • Discreet Phone Sex
  • Soapy Massage
  • Hidden Vibrator
Rating 6.1116 Users
Bakunyuu Jukujo ni Nusumareta Boku
Bakunyuu Jukujo ni Nusumareta Boku
33%
Tags
  • Shota Protagonist
  • Straight Shotacon
  • Heroine with Huge Breasts
  • Breast Smothering
  • Autobukkake
Rating 5.8216 Users
Mama no Bonyuu
Mama no Bonyuu
33%
Tags
  • Protagonist's Non-blood-related Mother as a Heroine
  • Artist Heroine
  • Artist Protagonist
  • Boobjob
  • Lactation During Sex
Rating 6.4929 Users
Momojiri Taiiku Onna Kyoushi
Momojiri Taiiku Onna Kyoushi
33%
Tags
  • Heroine with Tights
  • P.E. Teacher Heroine
  • Braless Heroine
  • Unavoidable Heroine Rape by the Protagonist
  • Lots of Event CGs
Rating 6.2020 Users
Ero Onsen ~Shinjin Okami no Machigaidarake no Omotenashi~
Ero Onsen ~Shinjin Okami no Machigaidarake no Omotenashi~
32%
Tags
  • Rounin Protagonist
  • Onsen
  • Consensual Group Sex of One Female and Several Males
  • Tribadism on Penis
  • Soapy Massage
Rating 6.9620 Users
Ore ga Aishita Hitozuma ~Emiko~
Ore ga Aishita Hitozuma ~Emiko~
32%
Tags
  • Completely Avoidable Rape
  • Heroine with Huge Breasts
  • Pregnancy Ending
  • Soapy Massage
  • Love Hotel
Rating 6.5634 Users
Mome! Chichi Shimai Katei Kyoushi 11nin
Mome! Chichi Shimai Katei Kyoushi 11nin
32%
Tags
  • Romancing a Family
  • Hero(ine) Selection
  • Tutor Protagonist
  • Twin Sister Support Character
  • Blood-related Incest
Rating 6.8613 Users
Nantai Prima Onna Kyoushi
Nantai Prima Onna Kyoushi
32%
Tags
  • Bisexual Heroine
  • Autocunnilingus
  • Big Breast Sizes Heroine
  • Sexual Devices
  • Sex at School
Rating 6.5822 Users
Remote Control Girl
Remote Control Girl
32%
Tags
  • Mind Control
  • Scientist Protagonist
  • Flat Tints Only
  • Ugly Protagonist
  • Blowjob
Rating 6.3220 Users
Chikan Ou ~In
Chikan Ou ~In'yoku no Kaihousha~
32%
Tags
  • Chikan Protagonist
  • Chikan
  • Glory Hole Sex
  • Molestation on Public Transport
  • Discreet Sex
Rating 6.0021 Users
Najimi no Oba-chan ~Batsuichi Jukujo to Inran Miboujin~
Najimi no Oba-chan ~Batsuichi Jukujo to Inran Miboujin~
32%
Tags
  • Widow Heroine
  • Heroine with Armpit Hair
  • Heroine with Kimono
  • Dildos
  • Rope Bondage
Rating 6.8822 Users
Paizuri Cheerleader VS Sakunyuu Ouendan!
Paizuri Cheerleader VS Sakunyuu Ouendan!
32%
Tags
  • Cheerleader Heroine
  • Student Club
  • Harem Ending
  • Heroine with a Fang
  • Non-blood-related Brother/Sister Incest
Rating 7.0538 Users
Futari no Aniyome ~Miryokuteki na Aniyome-tachi to Doukyo Suru Koto ni Natta Hibi no Tenmatsu~
Futari no Aniyome ~Miryokuteki na Aniyome-tachi to Doukyo Suru Koto ni Natta Hibi no Tenmatsu~
31%
Tags
  • Protagonist's Sister-in-Law as a Heroine
  • Domicile
  • Pregnancy Ending
  • Netori
  • Big Breast Sizes Heroine
Rating 6.7831 Users
Parallel Akiba Gakuen
Parallel Akiba Gakuen
31%
Tags
  • Defloration During Common Route
  • Threesome
  • Nursing Handjob
  • Single Buttjob
  • Elf Heroine
Rating 7.3313 Users

Okaa-san no Ama Ama Time ~Issho ni Yoru no Kenshuu Massage~ has not appeared in our Steam sample enough to calculate it's similar novels... sorry!
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Tags (11 total)

NameScoreImportanceWeight
Protagonist's Blood-related Mother as a Heroine3.001.895.68
Blood-related Mother/Son Incest3.001.845.53
Spoons2.001.492.98
Anal Fingering2.001.482.95
Single Handjob2.001.242.49
Single Boobjob2.001.152.29
Sixty-nine2.001.072.15
Single Blowjob2.000.951.90
Missionary Position2.000.941.88
Cunnilingus2.000.931.86
Heroine with Big Breasts2.000.841.67

Traits (34 total)

NameCharactersImportanceWeight
Speculum (Sexual) Subject of (Sexual)12.541.76
Single Parent Role12.511.74
Widow Role12.201.53
Nurse Role12.151.49
Nurse's Cap Clothes12.091.45
Nurse Uniform Clothes12.011.39
Vaginal Object Insertion Subject of (Sexual)11.991.38
Facesitting Engages in (Sexual)11.971.37
Vaginal Gaping Engages in (Sexual)11.951.35
Bun Hair11.771.23
Anal Fingering Subject of (Sexual)11.711.19
Vaginal Masturbation Engages in (Sexual)11.671.16
Spoons Subject of (Sexual)11.671.16
Hard Worker Personality11.541.07
Incest Engages in (Sexual)11.471.02
Mother Role11.461.01
Masturbation Engages in (Sexual)11.400.97
Tominagi Subject of (Sexual)11.360.94
Ahegao Engages in (Sexual)11.320.92
Sixty-nine Engages in (Sexual)11.260.87
Parted in Middle Hair11.250.87
Friendly Personality11.220.84
Anal Sex Subject of (Sexual)11.190.82
Standing Sex Subject of (Sexual)11.180.81
Butterfly Subject of (Sexual)11.170.81
Cunnilingus Subject of (Sexual)11.160.81
Handjob Engages in (Sexual)11.160.80
Big Breasts Body11.130.78
Boobjob Engages in (Sexual)11.070.74
Thigh-high Stockings Clothes11.040.72
Kind Personality11.030.71
Brown Eyes10.900.62
Blowjob Engages in (Sexual)10.760.53
Brown Hair10.680.47