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Summary

When the main character visits his school during summer holiday, he accidentally finds Sukumi, his classmate, masturbating in female locker room. "If you don't want me to bring it out into the open, come here every day!" Her orders gradually get bolder and they have sex in the pool...? Super erotic summer holiday! His endless summer with Sukumi now starts! [From ErogeShop]

Zubu Nure no Ane Kasumi "Watashi no Mizugi ni Sonna Kitanai Mono, Shimikomasenaide!"
Zubu Nure no Ane Kasumi "Watashi no Mizugi ni Sonna Kitanai Mono, Shimikomasenaide!"
NAN%
Tags
  • Swimming Club
  • Protagonist's Sister-in-Law as a Heroine
  • Heroine with Swimsuits
  • Rapist Protagonist
  • Revenge
Rating 7.0229 Users
Kodomo no Himitsu
Kodomo no Himitsu
NAN%
Tags
  • Elementary School
  • Elementary School Student Heroine
  • Student-Teacher Romance
  • Sex Involving Children
  • Shota Support Character
Rating 6.3120 Users
Hangyaku no Beretta ~Ingoku ni Ochiru Senshi~
Hangyaku no Beretta ~Ingoku ni Ochiru Senshi~
NAN%
Tags
  • Heroine with Bodystocking
  • Heroine with Leotard
  • Future Japan
  • Post Apocalyptic Earth
  • No "Keep Voice on Click" Option
Rating 6.1926 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
Dungeon Crusaderz ~Tales of Demon Eater~
Dungeon Crusaderz ~Tales of Demon Eater~
NAN%
Tags
  • Dungeon Crawling Game
  • Action
  • RPG
  • Twin Footjob
  • Past
Rating 6.5928 Users
Rikka Plus
Rikka Plus
NAN%
Tags
  • Chuunibyou Heroine
  • Heroine with Eyepatch
  • Heroine with Ahoge
  • Heroine with Flat Chest (Non-Loli)
  • Unnamed Protagonist
Rating 6.3422 Users
In
In'yoku Celeb Tsuma 2 ~Chijoku Seisai~
NAN%
Tags
  • Sexual Slavery
  • Netori
  • Body Piercing
  • Married Heroine
  • Modern Day Japan
Rating 6.8521 Users
Binyuu Inmai Haruka "Watashi ni Iyarashii Cosplay Saseru nante... Kono Hentai!"
Binyuu Inmai Haruka "Watashi ni Iyarashii Cosplay Saseru nante... Kono Hentai!"
NAN%
Tags
  • Discipline Committee Leader Protagonist
  • Twin Bellyjob
  • Protagonist's Blood-related Sister as a Heroine
  • Heroine with Spats
  • Bunnygirl Cosplay
Rating 7.0627 Users
Hametoku ★ Orikou JK Pet Ayane & Yuuna ~Gakkou de Seishun!~
Hametoku ★ Orikou JK Pet Ayane & Yuuna ~Gakkou de Seishun!~
NAN%
Tags
  • Blackmail
  • Adult Breast Sucking
  • Sex at School
  • Internal Exhibition of Sex
  • Masturbation
Rating 6.5025 Users
Netori Shugisha no Hanayome Ijiri! ~Kon
Netori Shugisha no Hanayome Ijiri! ~Kon'yakusha ga Anna Koe de Aegu no o Aniki wa Shiranai~
NAN%
Tags
  • Protagonist's Sister-in-Law as a Heroine
  • Netori
  • Female Protagonist for a Short Time
  • Blackmail
  • High Amounts of Rape
Rating 6.2021 Users
Touka Chiru ~Shoujo Kenshi no Houfuku wa Doukoku ni Michite~
Touka Chiru ~Shoujo Kenshi no Houfuku wa Doukoku ni Michite~
NAN%
Tags
  • Yamato Nadeshiko Protagonist
  • Hate Story
  • Unavoidable Protagonist Rape
  • Corruption of Characters
  • Sword Wielding Heroine
Rating 6.9326 Users
Alter Ego
Alter Ego
NAN%
Tags
  • Simulation Game
  • SRPG
  • Oneesan-type Heroine
  • Protagonist's Senpai as a Heroine
  • Protagonist's Kouhai as a Heroine
Rating 6.7120 Users
Love Fetish ~Paizuri Hen~
Love Fetish ~Paizuri Hen~
NAN%
Tags
  • Flat Tints Only
  • Reverse Trap Heroine
  • Naizuri
  • Small Breast Sizes Heroine (Non-Loli)
  • Single Boobjob
Rating 6.8020 Users
Kan
Kan'in Tokkyuu Michishio ~Akumu no Sanshuukan~
NAN%
Tags
  • Trains
  • BDSM
  • Fisting
  • Sexual Slavery
  • Corruption of Characters
Rating 6.4824 Users
Wafuu Seiso na Kurokami JK wa Do Hentai no Futanari Do Mazo ~Binkan Kyokon Chinpo wa Nani o Sarete mo Shasei Shichau~
Wafuu Seiso na Kurokami JK wa Do Hentai no Futanari Do Mazo ~Binkan Kyokon Chinpo wa Nani o Sarete mo Shasei Shichau~
NAN%
Tags
  • Futanari Protagonist
  • Ballbusting
  • Masochist Protagonist
  • Protagonist with Phimosis
  • Big Breast Sizes Protagonist
Rating 6.1223 Users
Akogare no Onee-chan wa Choukyou Shigansha?!
Akogare no Onee-chan wa Choukyou Shigansha?!
NAN%
Tags
  • Masochist Heroine
  • Sexual Slavery (Consensual)
  • BDSM
  • University Student Heroine
  • Sexual Devices
Rating 6.2127 Users
Saimin Chuudoku ~Otto ga Shiranai Tsuma no Kao~
Saimin Chuudoku ~Otto ga Shiranai Tsuma no Kao~
NAN%
Tags
  • Erotic Mind Control
  • Spreader Bar
  • Married Heroine
  • Food Play
  • Second-person Narrative
Rating 5.8330 Users
Fuka no Jugoku ~Ugomeku Moushuu no Rensa... Owari no Nai Kyouen~
Fuka no Jugoku ~Ugomeku Moushuu no Rensa... Owari no Nai Kyouen~
NAN%
Tags
  • Sadist Protagonist
  • Sexual Slavery (Non-consensual)
  • Torture
  • Madness
  • Heroine Sisters
Rating 7.1727 Users
Shimai to no Amai Seikatsu
Shimai to no Amai Seikatsu
NAN%
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
Osaka Crisis ~Kanrakugai Kaihatsu Project~
Osaka Crisis ~Kanrakugai Kaihatsu Project~
NAN%
Tags
  • Vaginal + Anal Fisting
  • Open Gag
  • Torture Chamber
  • Government
  • Nympho Protagonist
Rating 7.1637 Users
Inshitsu Otaku ni Ikareru Imouto (Kanojo) ~Daiji na Ano Ko ga Netorarete~
Inshitsu Otaku ni Ikareru Imouto (Kanojo) ~Daiji na Ano Ko ga Netorarete~
NAN%
Tags
  • Hetare Protagonist
  • Protagonist Selection
  • Unavoidable Heroine Rape
  • Nympho Heroine
  • Clitoris Growth
Rating 6.8461 Users
Konchuu Kansatsu Shuu
Konchuu Kansatsu Shuu
NAN%
Tags
  • Insects
  • Sex with Insects
  • Part-time Job
  • Nipple Insertion
  • Pragmatic Protagonist
Rating 6.3631 Users
Ryoujoku Gakuenchou / Dorei Club ~Dokushin Choukyouroku~
Ryoujoku Gakuenchou / Dorei Club ~Dokushin Choukyouroku~
NAN%
Tags
  • Human Cattle
  • Sexual Slavery
  • Heroine with Armpit Hair
  • Heroine with Latex
  • Mouth Gag
Rating 7.0536 Users
Inmai Baby
Inmai Baby
NAN%
Tags
  • Playtime Counter
  • Completely Avoidable Netorare
  • Passage of Time
  • Flat Tints Only
  • Only Protagonist's Sisters as Heroine(s)
Rating 6.6520 Users
Kyonyuu Seido Kaichou Chijoku no Hakudaku Kuro Tights ~Konna Yatsu no Okazu ni Naru nante!~
Kyonyuu Seido Kaichou Chijoku no Hakudaku Kuro Tights ~Konna Yatsu no Okazu ni Naru nante!~
30%
Tags
  • Student Council President Protagonist
  • Skip Scenes
  • Built-in Flowchart
  • Peace Sign Ahegao
  • Blowjob Duck Face
Rating 6.4431 Users
Ijou Chitai ~Kanojo wa Boku no Jikken Dorei~
Ijou Chitai ~Kanojo wa Boku no Jikken Dorei~
29%
Tags
  • Single Hole Multiple Penetration (obsolete)
  • Single Hole Double Penetration (obsolete)
  • Clitoris Growth
  • Single Hole Multiple Objects Insertion (obsolete)
  • Male on Futanari
Rating 5.4733 Users
Kan
Kan'in Tokkyuu Michishio ~Akumu no Sanshuukan~
28%
Tags
  • Trains
  • BDSM
  • Fisting
  • Sexual Slavery
  • Corruption of Characters
Rating 6.4824 Users
Love Fetish ~Paizuri Hen~
Love Fetish ~Paizuri Hen~
28%
Tags
  • Flat Tints Only
  • Reverse Trap Heroine
  • Naizuri
  • Small Breast Sizes Heroine (Non-Loli)
  • Single Boobjob
Rating 6.8020 Users
Alter Ego
Alter Ego
27%
Tags
  • Simulation Game
  • SRPG
  • Oneesan-type Heroine
  • Protagonist's Senpai as a Heroine
  • Protagonist's Kouhai as a Heroine
Rating 6.7120 Users
Netori Shugisha no Hanayome Ijiri! ~Kon
Netori Shugisha no Hanayome Ijiri! ~Kon'yakusha ga Anna Koe de Aegu no o Aniki wa Shiranai~
27%
Tags
  • Protagonist's Sister-in-Law as a Heroine
  • Netori
  • Female Protagonist for a Short Time
  • Blackmail
  • High Amounts of Rape
Rating 6.2021 Users
Touka Chiru ~Shoujo Kenshi no Houfuku wa Doukoku ni Michite~
Touka Chiru ~Shoujo Kenshi no Houfuku wa Doukoku ni Michite~
27%
Tags
  • Yamato Nadeshiko Protagonist
  • Hate Story
  • Unavoidable Protagonist Rape
  • Corruption of Characters
  • Sword Wielding Heroine
Rating 6.9326 Users
Binyuu Inmai Haruka "Watashi ni Iyarashii Cosplay Saseru nante... Kono Hentai!"
Binyuu Inmai Haruka "Watashi ni Iyarashii Cosplay Saseru nante... Kono Hentai!"
26%
Tags
  • Discipline Committee Leader Protagonist
  • Twin Bellyjob
  • Protagonist's Blood-related Sister as a Heroine
  • Heroine with Spats
  • Bunnygirl Cosplay
Rating 7.0627 Users
Hametoku ★ Orikou JK Pet Ayane & Yuuna ~Gakkou de Seishun!~
Hametoku ★ Orikou JK Pet Ayane & Yuuna ~Gakkou de Seishun!~
26%
Tags
  • Blackmail
  • Adult Breast Sucking
  • Sex at School
  • Internal Exhibition of Sex
  • Masturbation
Rating 6.5025 Users
Akogare no Onee-chan wa Choukyou Shigansha?!
Akogare no Onee-chan wa Choukyou Shigansha?!
26%
Tags
  • Masochist Heroine
  • Sexual Slavery (Consensual)
  • BDSM
  • University Student Heroine
  • Sexual Devices
Rating 6.2127 Users
Fuka no Jugoku ~Ugomeku Moushuu no Rensa... Owari no Nai Kyouen~
Fuka no Jugoku ~Ugomeku Moushuu no Rensa... Owari no Nai Kyouen~
26%
Tags
  • Sadist Protagonist
  • Sexual Slavery (Non-consensual)
  • Torture
  • Madness
  • Heroine Sisters
Rating 7.1727 Users
Osaka Crisis ~Kanrakugai Kaihatsu Project~
Osaka Crisis ~Kanrakugai Kaihatsu Project~
25%
Tags
  • Vaginal + Anal Fisting
  • Open Gag
  • Torture Chamber
  • Government
  • Nympho Protagonist
Rating 7.1637 Users
Konchuu Kansatsu Shuu
Konchuu Kansatsu Shuu
25%
Tags
  • Insects
  • Sex with Insects
  • Part-time Job
  • Nipple Insertion
  • Pragmatic Protagonist
Rating 6.3631 Users
Inmai Baby
Inmai Baby
25%
Tags
  • Playtime Counter
  • Completely Avoidable Netorare
  • Passage of Time
  • Flat Tints Only
  • Only Protagonist's Sisters as Heroine(s)
Rating 6.6520 Users
Love Fetish ~Ashi Fetish Ashikoki Hen~
Love Fetish ~Ashi Fetish Ashikoki Hen~
25%
Tags
  • Feet Licking
  • Flat Tints Only
  • Footjob
  • Legwear Footjob
  • Modern Day
Rating 7.1224 Users
Kanpaku Sengen
Kanpaku Sengen
24%
Tags
  • Torture
  • Rape
  • Early Sexual Content
  • Clothing Damage
  • Genius Heroine
Rating 6.7734 Users
Mesunie Onna Kyoushi ~Watashi wa Kare no Mae de Hizamazuku~
Mesunie Onna Kyoushi ~Watashi wa Kare no Mae de Hizamazuku~
24%
Tags
  • Pregnancy Bad Ending
  • Tongue Piercing
  • Play Piercing
  • Body Piercing
  • Duct Tape Bondage
Rating 7.4527 Users
Hametoku ★ Orikou JK Pet Hazuki & Ayane ~Gakkou de Seishun!~
Hametoku ★ Orikou JK Pet Hazuki & Ayane ~Gakkou de Seishun!~
24%
Tags
  • Student Club President Protagonist
  • Big Breast Sizes Protagonist
  • Swimming Club
  • Third-person Narrative
  • Blowbang
Rating 6.5334 Users
Gyakushuu 4
Gyakushuu 4
24%
Tags
  • Protagonist with Tentacles
  • Knight Heroine
  • Cum Bath
  • Officer Protagonist
  • Horse
Rating 7.7128 Users
Akuma de Oshioki! Marukido Sadoshiki Hentai Oshioki Kouza
Akuma de Oshioki! Marukido Sadoshiki Hentai Oshioki Kouza
24%
Tags
  • Zombie Heroine
  • Cloning
  • Werewolf
  • Selfcest
  • Maou Heroine
Rating 7.6852 Users
Iede Kissa ~Anata no Booth de Kasegasete~
Iede Kissa ~Anata no Booth de Kasegasete~
23%
Tags
  • Prostitute Protagonist
  • Runaway Heroine
  • Prostitution
  • Sex Involving Prostitution
  • Cafe
Rating 6.7122 Users
Soul Foundation 2
Soul Foundation 2
23%
Tags
  • Gundam
  • Glory Hole Sex
  • Future Earth
  • Flat Tints Only
  • Twin Handjob
Rating 6.8621 Users
Enkou JK Bitch Gyaru - Oji-san to Nama Pako Seikatsu
Enkou JK Bitch Gyaru - Oji-san to Nama Pako Seikatsu
23%
Tags
  • Oyaji Protagonist
  • Gyaru Heroine
  • Twin Footjob
  • Flat Tints Only
  • Ejaculation Forewarner
Rating 6.7330 Users
Nikuyoku Devil Saimin
Nikuyoku Devil Saimin
23%
Tags
  • Spontaneous Sex Scenes
  • Erotic Mind Control
  • Fictional Beings
  • Curse
  • Group Sex of Multiple Females and Males
Rating 5.8223 Users

Tsundere Inran Shoujo Sukumi ~Karappo ni Naru made Yurusanai kara ne~ 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 (26 total)

NameScoreImportanceWeight
Heroine with Swimsuits2.001.643.29
Consensual Sex with Animals1.003.043.04
Perverted Heroine2.001.412.82
Tsundere Heroine2.001.402.80
Map Movement2.001.312.62
Multiple Penetration2.001.282.56
Single Hole Multiple Tentacle Penetration (obsolete)1.002.372.37
Quickie Fix Position2.001.122.23
Sex in Public Places2.001.092.18
High Sexual Content2.001.052.11
Only a Single Heroine2.001.012.03
Futanari Heroine1.001.971.97
Consensual Sex Involving Tentacles1.001.931.93
Bestiality1.001.831.83
Clothing Damage1.001.771.77
Doggy Style2.000.811.61
Sex in Water1.001.411.41
Anal Toys1.001.391.39
Female Ejaculation1.001.271.27
Bukkake1.001.201.20
Pregnant Sex1.001.181.18
Group Sex of One Female and Several Males1.001.071.07
Outdoor Sex1.001.001.00
Cowgirl1.000.840.84
Male Protagonist2.000.300.60
ADV3.000.140.43

Traits (62 total)

NameCharactersImportanceWeight
Elementary School Backpack Items13.112.16
Vaginal Multiple Tentacle Penetration Subject of (Sexual)12.771.92
Sex in a Wedding Dress Engages in (Sexual)12.721.88
Frot Engages in (Sexual)12.711.88
Consensual Sex with Tentacles Engages in (Sexual)12.571.78
Band-aid Clothes12.511.74
Bestiality Engages in (Sexual)12.461.70
Nipple Insertion Subject of (Sexual)12.451.70
Breast Expansion Subject of12.411.67
Futanari Body12.361.63
Penis Growth Subject of12.341.62
Large Penis Body12.211.53
Claret Hair12.161.50
Veil Clothes12.151.49
Old Type School Swimsuit Clothes12.091.45
Anal Beads Subject of (Sexual)12.011.39
Wedding Dress Clothes11.991.38
Swimming Engages in11.961.36
Voyeurism Subject of (Sexual)11.951.35
Vaginal Gaping Engages in (Sexual)11.951.35
Over The Knee Socks Clothes11.951.35
Mutual Masturbation Engages in (Sexual)11.941.34
Tsundere Personality11.871.30
Handjob Subject of (Sexual)11.751.22
Spit-roast Subject of (Sexual)11.751.21
Footjob Engages in (Sexual)11.721.19
Group Sex of One Female and Several Males Engages in (Sexual)11.701.18
Vaginal Masturbation Engages in (Sexual)11.671.16
Small Breasts Body11.651.15
Double Penetration (Group Sex) Subject of (Sexual)11.651.14
Pervert Personality11.631.13
Maid's Headdress Clothes11.631.13
Pink Eyes11.621.12
Lactation Engages in11.591.10
Apron Clothes11.591.10
Sex in Water Engages in (Sexual)11.561.08
Bracelet Clothes11.561.08
Sex in Front of an Audience Engages in (Sexual)11.501.04
Sailor School Uniform Clothes11.471.02
Blunt Bangs Hair11.400.97
Female Ejaculation Engages in (Sexual)11.360.95
Bukkake Subject of (Sexual)11.350.94
Watashi Personality11.250.87
Classmate Role11.230.85
Ribbon Hair Tie Clothes11.190.83
Anal Sex Subject of (Sexual)11.190.82
Butterfly Subject of (Sexual)11.170.81
Outdoor Sex Engages in (Sexual)11.160.80
Handjob Engages in (Sexual)11.160.80
Twin Tails Hair11.130.78
Boobjob Engages in (Sexual)11.070.74
Sitting Sex Subject of (Sexual)11.060.74
Sidehair Hair10.980.68
Cowgirl Subject of (Sexual)10.950.66
Straight Hair10.940.65
Doggy Style Subject of (Sexual)10.920.64
Shoulder-length Hair10.920.64
Virgin Sex Engages in (Sexual)10.850.59
Blowjob Engages in (Sexual)10.760.53
Teen Body10.620.43
Slim Body10.580.40
Pale Body10.370.25