Summary

The day after the protagonist was bullied by a dominant classmate, he finds that suddenly his testicles and penis have grown to enormous proportions! He rushes to the the infirmary, where he is told they will need a sample of semen. However, he ends up ejaculating an unbelievable amount. When the nurse sees this, she tells him: "Why don't you take revenge on the girls who bullied you with your new toy?" [From DLsite English]

Sengoku Makan
Sengoku Makan
NAN%
Tags
  • Sengoku Period
  • Onna Bugeisha Heroine
  • Protagonist Based on Real Person
  • Heroine Based on Real Person
  • Strong Female Protagonist
Rating 6.0230 Users
Fukushuu no Honoo wa Ingoku no Yami ni Moe -Gokuaku Onna ni Net Koukai de Seisai o-
Fukushuu no Honoo wa Ingoku no Yami ni Moe -Gokuaku Onna ni Net Koukai de Seisai o-
NAN%
Tags
  • Sexual Slavery (Choukyou Variation)
  • Revenge
  • Clothing Damage
  • Bondage
  • Vaginal Multiple Objects Insertion
Rating 6.1022 Users
Tanetsuke Kyoushitsu ~Ima kara Minna ni Sensei no Tokunou Seishi de Harande Moraimasu~
Tanetsuke Kyoushitsu ~Ima kara Minna ni Sensei no Tokunou Seishi de Harande Moraimasu~
NAN%
Tags
  • Sex Involving Smegma
  • Glory Hole Sex
  • Religious Heroine
  • Nun Heroine
  • Impregnation
Rating 6.4124 Users
Lilith-Izm08 ~Nobushito Black Izm~
Lilith-Izm08 ~Nobushito Black Izm~
NAN%
Tags
  • Unavoidable Heroine Rape
  • Kunoichi Heroine
  • Hetare Protagonist
  • Heroine with Tattoo
  • Small Breast Sizes Heroine (Non-Loli)
Rating 6.9738 Users
Koukaku no Ai ~Senzai Ishiki e no Mesubuta Kokuin~
Koukaku no Ai ~Senzai Ishiki e no Mesubuta Kokuin~
NAN%
Tags
  • Heroine with Catsuit
  • Nanomachines
  • High-Tech Sex Engine
  • Future Tokyo
  • Torture Chamber
Rating 7.09153 Users
Hitozuma Keiji wa Moto Mahou Shoujo ~2-juu Spy no Ore ga Sennou Saimin o Kurikaeshi Netori Otosu~
Hitozuma Keiji wa Moto Mahou Shoujo ~2-juu Spy no Ore ga Sennou Saimin o Kurikaeshi Netori Otosu~
NAN%
Tags
  • Netori
  • Falling to Evil (sexual)
  • Kneepit Sex
  • Armpit Sex
  • Stockings
Rating 6.6442 Users
Lilith-Izm01 ~Fera Hen~
Lilith-Izm01 ~Fera Hen~
NAN%
Tags
  • Anthology
  • Half-Japanese Heroine
  • Blowjob
  • Deepthroat
  • Big Breast Sizes Heroine
Rating 5.8027 Users
Mahou Shoujo Fairy Knights
Mahou Shoujo Fairy Knights
NAN%
Tags
  • Single Hole Multiple Penetration (obsolete)
  • Mahou Shoujo Heroine
  • Gaping
  • Single Hole Multiple Tentacle Penetration (obsolete)
  • Remote-controlled Vibrator
Rating 6.4940 Users
Himekishi Lilia ~Mashoku no Oujou ni Otsu~
Himekishi Lilia ~Mashoku no Oujou ni Otsu~
NAN%
Tags
  • Madam Heroine
  • Sexual Slavery (Non-consensual)
  • Medieval Fantasy
  • High Amounts of Rape
  • Heroine with Armor
Rating 6.4765 Users
Nantai Prima Onna Kyoushi
Nantai Prima Onna Kyoushi
NAN%
Tags
  • Bisexual Heroine
  • Autocunnilingus
  • Big Breast Sizes Heroine
  • Sexual Devices
  • Sex at School
Rating 6.5822 Users
Majo-gari no Kishi ~Jinkaku Ten
Majo-gari no Kishi ~Jinkaku Ten'i no Ori~
NAN%
Tags
  • Brother/Sister Incest
  • Medieval Fantasy
  • Body Swapping
  • Gaping
  • Incest
Rating 6.0823 Users
Semen King! ~Arthur Ou mo Entaku Kishi mo Majo mo, Ore no Seiken de Keiren Soku Iki!~
Semen King! ~Arthur Ou mo Entaku Kishi mo Majo mo, Ore no Seiken de Keiren Soku Iki!~
NAN%
Tags
  • Heroine Based on Real Person
  • Middle Ages Europe
  • Inflation
  • Knight Heroine
  • Rape on Defeat
Rating 6.2420 Users
Lilith-Izm07 ~Ore no Pet Hen~
Lilith-Izm07 ~Ore no Pet Hen~
NAN%
Tags
  • Yuki-onna Heroine
  • All the Way Through
  • BDSM
  • Anthology
  • Mahou Shoujo Heroine
Rating 6.3324 Users
Nobunaga mo Hideyoshi mo Ieyasu mo!? Minna Harabote de Tenka Touitsu!!
Nobunaga mo Hideyoshi mo Ieyasu mo!? Minna Harabote de Tenka Touitsu!!
NAN%
Tags
  • Heroine Based on Real Person
  • Sengoku Period
  • Rape on Defeat
  • Inflation
  • Excessive Semen
Rating 6.0620 Users
Nyotai Kyouran -Haze Otome-
Nyotai Kyouran -Haze Otome-
NAN%
Tags
  • Multiple Penises
  • Grotesque Nipples
  • Autopenetration
  • Grotesque Body Modification
  • Foreskin Play
Rating 6.4838 Users
Jiyuujizai ni Ero Saimin ~DameDame no Ore demo Bishoujo Taimashi to Yarimakuri!~
Jiyuujizai ni Ero Saimin ~DameDame no Ore demo Bishoujo Taimashi to Yarimakuri!~
NAN%
Tags
  • Possession
  • Extremely (un)Lucky Protagonist
  • Occult Club
  • Save Memo Function
  • Student Club Member Protagonist
Rating 5.8425 Users
Mondou Muyou! Tanezuke Kyokashou ~Rettou Idenshi no Ore demo Kokka Kenryoku de Naka Dashi Houdai~
Mondou Muyou! Tanezuke Kyokashou ~Rettou Idenshi no Ore demo Kokka Kenryoku de Naka Dashi Houdai~
NAN%
Tags
  • Sex License
  • Kendo Club
  • Sex Under the Necessity
  • Pregnancy
  • School Sports Club Member Heroine
Rating 6.7323 Users
Dai Gyakuten! Mujintou wa Rape Paradise
Dai Gyakuten! Mujintou wa Rape Paradise
NAN%
Tags
  • Stranded
  • 100% Completion Bonus
  • Completion Status Indicator
  • Sexual Slavery (Choukyou Variation)
  • Island
Rating 6.4128 Users
Raikou no Taimashi Nanaho ~Injin Fukkatsu~
Raikou no Taimashi Nanaho ~Injin Fukkatsu~
NAN%
Tags
  • Cum Bath
  • Nipple Insertion
  • Gymnastic Heroine
  • Gaping
  • Prison
Rating 6.4125 Users
Me ga Sametara Seieki ga 100 Bai Tamaru Karada ni Natteta → Tairyou Chuunyuu!
Me ga Sametara Seieki ga 100 Bai Tamaru Karada ni Natteta → Tairyou Chuunyuu!
NAN%
Tags
  • Inflation
  • Excessive Semen
  • Flat Tints Only
  • Peace Sign Ahegao
  • Ahegao
Rating 6.4626 Users
Bukkake!! ~Senpai wa Milk Mamire~
Bukkake!! ~Senpai wa Milk Mamire~
NAN%
Tags
  • Student Council Member Protagonist
  • Protagonist's Senpai as a Heroine
  • Sadist Heroine
  • Heroine with Tan Lines
  • Armpit Sex
Rating 5.6520 Users
Seiso na JK ni Biyaku Mamire no Chi*po o Soku Hame Shitara Ore no Seieki Benki ni Natta!
Seiso na JK ni Biyaku Mamire no Chi*po o Soku Hame Shitara Ore no Seieki Benki ni Natta!
NAN%
Tags
  • Sex Involving Drugs
  • Excessive Semen
  • Protagonist's Cousin as a Heroine
  • Tribadism on Penis
  • Unavoidable Heroine Rape
Rating 6.3521 Users
Tsundere Inran Shoujo Sukumi ~Karappo ni Naru made Yurusanai kara ne~
Tsundere Inran Shoujo Sukumi ~Karappo ni Naru made Yurusanai kara ne~
NAN%
Tags
  • Heroine with Swimsuits
  • Consensual Sex with Animals
  • Perverted Heroine
  • Tsundere Heroine
  • Map Movement
Rating 5.6121 Users
Saimin, Suki Desu yo ne? ~Idol Datte Hatsujou Sasemasu~
Saimin, Suki Desu yo ne? ~Idol Datte Hatsujou Sasemasu~
NAN%
Tags
  • Flat Tints Only
  • Mind Control
  • Clothed Female Naked Male
  • Vaginal Gaping
  • Erotic Mind Control
Rating 6.1121 Users
Maou to Seijo ~Norowareshi Injoku no Rinne~
Maou to Seijo ~Norowareshi Injoku no Rinne~
39%
Tags
  • Maou Protagonist
  • Christian Mythology
  • Blowbang
  • Internal Exhibition of Sex
  • No "Keep Voice on Click" Option
Rating 6.4621 Users
Chocolate Princess! ~Ingoku no!? Homestay~
Chocolate Princess! ~Ingoku no!? Homestay~
34%
Tags
  • Huge Insertion
  • Mermaid Heroine
  • Gaping
  • Inflation
  • Heroine with Visible Panties
Rating 6.9427 Users
Nobunaga mo Hideyoshi mo Ieyasu mo!? Minna Harabote de Tenka Touitsu!!
Nobunaga mo Hideyoshi mo Ieyasu mo!? Minna Harabote de Tenka Touitsu!!
32%
Tags
  • Heroine Based on Real Person
  • Sengoku Period
  • Rape on Defeat
  • Inflation
  • Excessive Semen
Rating 6.0620 Users
Lilith-Izm07 ~Ore no Pet Hen~
Lilith-Izm07 ~Ore no Pet Hen~
31%
Tags
  • Yuki-onna Heroine
  • All the Way Through
  • BDSM
  • Anthology
  • Mahou Shoujo Heroine
Rating 6.3324 Users
Semen King! ~Arthur Ou mo Entaku Kishi mo Majo mo, Ore no Seiken de Keiren Soku Iki!~
Semen King! ~Arthur Ou mo Entaku Kishi mo Majo mo, Ore no Seiken de Keiren Soku Iki!~
30%
Tags
  • Heroine Based on Real Person
  • Middle Ages Europe
  • Inflation
  • Knight Heroine
  • Rape on Defeat
Rating 6.2420 Users
Nantai Prima Onna Kyoushi
Nantai Prima Onna Kyoushi
30%
Tags
  • Bisexual Heroine
  • Autocunnilingus
  • Big Breast Sizes Heroine
  • Sexual Devices
  • Sex at School
Rating 6.5822 Users
Majo-gari no Kishi ~Jinkaku Ten
Majo-gari no Kishi ~Jinkaku Ten'i no Ori~
29%
Tags
  • Brother/Sister Incest
  • Medieval Fantasy
  • Body Swapping
  • Gaping
  • Incest
Rating 6.0823 Users
Mahou Shoujo Fairy Knights
Mahou Shoujo Fairy Knights
29%
Tags
  • Single Hole Multiple Penetration (obsolete)
  • Mahou Shoujo Heroine
  • Gaping
  • Single Hole Multiple Tentacle Penetration (obsolete)
  • Remote-controlled Vibrator
Rating 6.4940 Users
Himekishi Lilia ~Mashoku no Oujou ni Otsu~
Himekishi Lilia ~Mashoku no Oujou ni Otsu~
26%
Tags
  • Madam Heroine
  • Sexual Slavery (Non-consensual)
  • Medieval Fantasy
  • High Amounts of Rape
  • Heroine with Armor
Rating 6.4765 Users
Jiyuujizai ni Ero Saimin ~DameDame no Ore demo Bishoujo Taimashi to Yarimakuri!~
Jiyuujizai ni Ero Saimin ~DameDame no Ore demo Bishoujo Taimashi to Yarimakuri!~
25%
Tags
  • Possession
  • Extremely (un)Lucky Protagonist
  • Occult Club
  • Save Memo Function
  • Student Club Member Protagonist
Rating 5.8425 Users
Dai Gyakuten! Mujintou wa Rape Paradise
Dai Gyakuten! Mujintou wa Rape Paradise
24%
Tags
  • Stranded
  • 100% Completion Bonus
  • Completion Status Indicator
  • Sexual Slavery (Choukyou Variation)
  • Island
Rating 6.4128 Users
Me ga Sametara Seieki ga 100 Bai Tamaru Karada ni Natteta → Tairyou Chuunyuu!
Me ga Sametara Seieki ga 100 Bai Tamaru Karada ni Natteta → Tairyou Chuunyuu!
24%
Tags
  • Inflation
  • Excessive Semen
  • Flat Tints Only
  • Peace Sign Ahegao
  • Ahegao
Rating 6.4626 Users
Seiso na JK ni Biyaku Mamire no Chi*po o Soku Hame Shitara Ore no Seieki Benki ni Natta!
Seiso na JK ni Biyaku Mamire no Chi*po o Soku Hame Shitara Ore no Seieki Benki ni Natta!
23%
Tags
  • Sex Involving Drugs
  • Excessive Semen
  • Protagonist's Cousin as a Heroine
  • Tribadism on Penis
  • Unavoidable Heroine Rape
Rating 6.3521 Users
Saimin, Suki Desu yo ne? ~Idol Datte Hatsujou Sasemasu~
Saimin, Suki Desu yo ne? ~Idol Datte Hatsujou Sasemasu~
22%
Tags
  • Flat Tints Only
  • Mind Control
  • Clothed Female Naked Male
  • Vaginal Gaping
  • Erotic Mind Control
Rating 6.1121 Users
Kanpaku Sengen
Kanpaku Sengen
21%
Tags
  • Torture
  • Early Sexual Content
  • Rape
  • Clothing Damage
  • Genius Heroine
Rating 6.7436 Users
Bakunyuu Hoken Onna Kyoushi
Bakunyuu Hoken Onna Kyoushi
21%
Tags
  • School Nurse Heroine
  • Clothed Male Naked Female
  • Bisexual Heroine
  • Teacher Heroine
  • Promiscuous Heroine
Rating 6.5733 Users
Ookami Shoujo Reona -Yasei Houkai Hakuchi Kyouiku-
Ookami Shoujo Reona -Yasei Houkai Hakuchi Kyouiku-
21%
Tags
  • Rapist Protagonist
  • Internal Exhibition of Sex
  • Central Heroine
  • Sexual Devices
  • Object Insertion
Rating 6.6620 Users
Lilith-Izm06 ~Digi Anime with Lily & Lilia Gaiden~
Lilith-Izm06 ~Digi Anime with Lily & Lilia Gaiden~
20%
Tags
  • Heroine with Bodystocking
  • Heroine with Slave Tattoo (BDSM)
  • Gaping
  • Anthology
  • Internal Exhibition of Sex
Rating 6.2344 Users
Lilith-Izm02 ~Nakadashi/Haramase Hen~
Lilith-Izm02 ~Nakadashi/Haramase Hen~
20%
Tags
  • Heroine with Catsuit
  • Kunoichi Heroine
  • Dog Cosplay
  • Future Japan
  • Erotic Beating (Non-Consensual)
Rating 6.25138 Users
Mukotori Juuban Shoubu!
Mukotori Juuban Shoubu!
20%
Tags
  • Kendo Club
  • Gokkun
  • Shota Protagonist
  • Oneesan-type Heroine
  • Otaku Heroine
Rating 6.7221 Users
Lilith-Izm03 ~If Story Hen~
Lilith-Izm03 ~If Story Hen~
19%
Tags
  • Officer Heroine
  • Gaping
  • Pantyjob
  • Anthology
  • Unavoidable Heroine Rape
Rating 6.3283 Users
Oshioki Sweetie ~Koi Suru Onee-san wa Urahara Desu~
Oshioki Sweetie ~Koi Suru Onee-san wa Urahara Desu~
19%
Tags
  • Sexual Cosplay
  • Straight Shotacon
  • Early Branching Plot
  • Western-style Manor
  • Heroine with Chinese Dress
Rating 6.9042 Users
Kyokon de Tanezuke Bokujou ni Naru Machi ~Meimon Oyako-tachi o Katappashi Kara Harama Seifuku! Machinaka no Mesuana ga Ore no Kachiku ni Naritagaru!~
Kyokon de Tanezuke Bokujou ni Naru Machi ~Meimon Oyako-tachi o Katappashi Kara Harama Seifuku! Machinaka no Mesuana ga Ore no Kachiku ni Naritagaru!~
19%
Tags
  • Human Cattle
  • Linked Piercings
  • Heroine with Slave Tattoo (BDSM)
  • Stuck-in-Wall Sex
  • Cum on Food
Rating 6.3841 Users

Seieki Tairyou Chuunyuu! ~Ore no Kodane wa Biyaku Iri~ 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 (36 total)

NameScoreImportanceWeight
Inflation3.001.775.30
Excessive Semen3.001.664.98
Unavoidable Heroine Rape by the Protagonist2.002.344.68
Medical Doctor Heroine2.002.124.24
Huge Insertion2.001.863.72
Revenge2.001.703.40
Ahegao2.501.253.13
Pregnancy2.001.543.07
Teacher Heroine2.001.372.75
Body Fluid Tube1.002.662.66
Single Handjob2.001.242.49
High School2.001.222.45
Autobukkake1.002.442.44
Sex with Protagonist Only2.001.142.27
Anal Sex2.001.132.26
Sex in Public Places2.001.102.19
Naked Sprites2.001.062.12
Vaginal Gaping1.002.102.10
Group Sex of Several Females1.002.002.00
Group Sex of One Male and Several Females2.000.911.83
Sex on Toilet1.001.751.75
High School Student Heroine2.000.851.71
Heroine with Big Breasts2.000.841.68
Facesitting1.001.651.65
Anal Fingering1.001.481.48
Nukige2.000.661.31
Female Ejaculation1.001.281.28
Vaginal Fingering1.001.251.25
Bukkake1.001.211.21
Lesbian Sex1.001.161.16
Sixty-nine1.001.081.08
Standing Sex1.001.061.06
Single Blowjob1.000.950.95
Cowgirl1.000.850.85
Doggy Style1.000.810.81
ADV2.000.150.29

Traits (72 total)

NameCharactersImportanceWeight
Group Sex of Several Females Engages in (Sexual)42.273.65
Inflated Belly Subject of (Sexual)42.043.28
Gas Mask Clothes13.322.30
Lesbian Sex Engages in (Sexual)41.382.22
Ringlet Hair22.002.20
Rape Subject of (Sexual)31.572.17
Ahegao Engages in (Sexual)41.312.11
Latex Gloves Clothes13.002.08
Body Fluid Tube Subject of (Sexual)12.982.07
Ballerina Shoes Clothes12.922.03
Sex in Public Places Engages in (Sexual)41.262.02
Reverse Spitroast Subject of (Sexual)21.842.02
Blazer Clothes21.832.01
Uwabaki Clothes12.861.98
Bukkake Subject of (Sexual)31.351.87
Idealist Personality12.701.87
Group Sex of One Male and Several Females Engages in (Sexual)41.161.86
Handjob Engages in (Sexual)41.151.85
Vaginal Fingering Engages in (Sexual)21.611.77
Medium Breasts Body21.481.62
Pantyhose Clothes21.431.57
Bullying Engages in12.251.56
Masturbation Engages in (Sexual)21.401.54
Ambitious Personality12.201.53
Medical Doctor Role12.091.45
Curtained Hair21.301.43
Sex on Toilet Engages in (Sexual)12.021.40
Facesitting Engages in (Sexual)11.961.36
Vaginal Gaping Engages in (Sexual)11.951.35
Cravat Clothes11.921.33
Violet Hair21.201.32
Anal Sex Subject of (Sexual)21.191.31
Standing Sex Subject of (Sexual)21.181.29
Butterfly Subject of (Sexual)21.171.29
Doggy Style Subject of (Sexual)30.921.28
String Ribbon Tie Clothes11.821.26
Lab Coat Clothes11.791.24
Skirt Suit Clothes11.741.21
Big Breasts Body21.101.21
Anal Fingering Subject of (Sexual)11.711.18
Cyan Eyes11.661.15
Teacher Role11.561.08
Sidehair Hair20.981.08
Mole Body11.551.08
Blowjob Engages in (Sexual)30.761.06
Cowgirl Subject of (Sexual)20.951.05
V Bangs Hair11.410.98
Hairpin Clothes11.410.98
Bathroom Sex Engages in (Sexual)11.380.96
High School Student Role20.860.95
Sixty-nine Engages in (Sexual)11.260.88
Parted in Middle Hair11.240.86
School Uniform Clothes20.770.84
Young-adult Body20.750.83
Long Hair20.750.82
Trousers Clothes11.180.82
Shirt Clothes11.160.80
Necktie Clothes11.120.78
Ponytail Hair11.100.76
Sitting Sex Subject of (Sexual)11.060.74
Violet Eyes11.050.73
Thigh-high Stockings Clothes11.050.73
Parted to Side Hair11.040.72
Amber Eyes11.030.72
Green Eyes11.020.71
Spiky Bangs Hair10.990.69
Teen Body20.620.68
Shoulder-length Hair10.920.64
Blond Hair10.890.62
Pale Body30.370.51
Brown Hair10.690.48
Short Hair10.610.42