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Summary

One day, a naked girl appeared in hikikomori Naoto’s room. She stripped off his pants and declared: “I’ve found you, son of the demon lord! Now die!” She swung at him with a sword that she pulled out of nowhere, but it was stopped by another naked girl. “I will definitely protect you…” On top of that, his childhood friend is an idol and his younger sister is not just a chuuni, but secretly a powerful magician!? What the hell is going on? [From Hau~ Omochikaeri!]

Koi × Koi = ∞ ~Koisuru Otome ni Dekiru Koto~
Koi × Koi = ∞ ~Koisuru Otome ni Dekiru Koto~
NAN%
Tags
  • Androphobic Heroine
  • Multiple Opening Movies
  • Church
  • Student Club Member Protagonist
  • Twins as Support Characters
Rating 6.8920 Users
G.I.B. Girls in Black
G.I.B. Girls in Black
NAN%
Tags
  • Combat with Laser and Beam Firearms
  • Title Parody
  • Panic Button
  • Tsukkomi Protagonist
  • Homemaker Protagonist
Rating 7.1641 Users
Tonari ni Kanojo no Iru Shiawase ~Winter Guest~
Tonari ni Kanojo no Iru Shiawase ~Winter Guest~
NAN%
Tags
  • Winter
  • Naked Sprites
  • Sex with Protagonist Only
  • Kinetic Novel
  • Only a Single Heroine
Rating 6.5927 Users
shin-neko ~Saikai Shita Imouto to no Arata na Kankei~
shin-neko ~Saikai Shita Imouto to no Arata na Kankei~
NAN%
Tags
  • Straight Lolicon
  • Only Blood-related Heroines
  • Only Protagonist's Sisters as Heroine(s)
  • Only Younger Heroines
  • Only Loli Heroines
Rating 6.4730 Users
Demon Busters ~Ecchi na Ecchi na Demon Taiji~
Demon Busters ~Ecchi na Ecchi na Demon Taiji~
NAN%
Tags
  • Discipline Committee Member Protagonist
  • Discipline Committee Member Heroine
  • Discipline Committee Leader Heroine
  • Tsukkomi Heroine
  • Energy Transfer via Sex
Rating 7.2073 Users
QUINTUPLE☆SPLASH
QUINTUPLE☆SPLASH
NAN%
Tags
  • Former All-girls School
  • Swimming Club
  • Brother/Sister Romance
  • Protagonist's Full Sister as a Heroine
  • Nude Filter
Rating 7.1045 Users
Yuyukana -Under the Starlight-
Yuyukana -Under the Starlight-
NAN%
Tags
  • Fictional Modern Day Japanese Island
  • Amnesia
  • Protagonist's Rival as a Heroine
  • Donkan Protagonist
  • Hetare Protagonist
Rating 7.0436 Users
Shin Shirogane no Soleil -ReANSWER-
Shin Shirogane no Soleil -ReANSWER-
NAN%
Tags
  • Valkyrie Heroine
  • Homunculus Heroine
  • Heroine with Catsuit
  • Heroine with Eyepatch
  • Master and Servant
Rating 6.8329 Users
Himegoto Masquerade ~Ojousama-tachi no Tawamure~
Himegoto Masquerade ~Ojousama-tachi no Tawamure~
NAN%
Tags
  • Trap Protagonist
  • Spring
  • All-girls School
  • Pantyjob
  • Simulation Game
Rating 6.6824 Users
Chinkamo Twins 2! ~Natsu da! Umi da! Futago no Imouto Oppai Taiketsu da!~
Chinkamo Twins 2! ~Natsu da! Umi da! Futago no Imouto Oppai Taiketsu da!~
NAN%
Tags
  • Only Blood-related Heroines
  • Only Protagonist's Sisters as Heroine(s)
  • Unnamed Protagonist
  • Twin Footjob
  • Oppai Loli Heroine
Rating 6.3720 Users
Koiharu Adolescence
Koiharu Adolescence
NAN%
Tags
  • Ghost Heroine
  • Brocon Heroine
  • Protagonist's Senpai as a Heroine
  • Comedy
  • High Sexual Content
Rating 7.1256 Users
1/7 no Mahoutsukai
1/7 no Mahoutsukai
NAN%
Tags
  • Brocon Support Character
  • Dual Wielding Swords
  • Childhood Promise
  • Dual Wielding Pistols
  • Close-up CGs
Rating 6.6833 Users
Prestar! ~Precious☆Star
Prestar! ~Precious☆Star's Festival~
NAN%
Tags
  • Musical Themes
  • School Festival
  • Mangaka Heroine
  • School Life Comedy
  • High School
Rating 6.4122 Users
Koi Suru Kimochi no Hanakotoba
Koi Suru Kimochi no Hanakotoba
NAN%
Tags
  • Dormitory Manager Protagonist
  • Homemaker Protagonist
  • Naizuri
  • Gamer Heroine
  • School Dormitory
Rating 7.2118 Users
Cocoro@Function! NEO
Cocoro@Function! NEO
NAN%
Tags
  • Future Japan
  • Genius Heroine
  • Brocon Heroine
  • Perverted Heroine
  • Clothed Boobjob
Rating 7.2185 Users
Gangsta Republica
Gangsta Republica
NAN%
Tags
  • Chuunibyou Protagonist
  • Student Club Member Protagonist
  • Tsukkomi Heroine
  • Brother/Sister Romance
  • Protagonist's Younger Sister as a Heroine
Rating 6.8152 Users
Yakimochi Stream
Yakimochi Stream
NAN%
Tags
  • Hikikomori Heroine
  • Jealousy
  • Painter Heroine
  • Nude Filter
  • Protagonist's Rival as a Heroine
Rating 7.18145 Users
Sakura Mau Otome no Rondo ~Anata to Miru Fuyuzakura~
Sakura Mau Otome no Rondo ~Anata to Miru Fuyuzakura~
NAN%
Tags
  • Trap Protagonist
  • Narrating Others' Thoughts
  • School Dormitory
  • Protagonist with Voice Acting
  • Yamato Nadeshiko Heroine
Rating 6.7133 Users
Happiness!
Happiness!
NAN%
Tags
  • Mahou Shoujo Heroine
  • School Life Comedy
  • Late Sexual Content
  • Slapstick
  • Trap Support Character
Rating 6.9859 Users
Unlucky Re:Birth/Reverse
Unlucky Re:Birth/Reverse
NAN%
Tags
  • Extremely (un)Lucky Protagonist
  • Discipline Committee Leader Heroine
  • Varied Title Screens
  • Summoning
  • Modern Day Setting in a Fictional World
Rating 7.8065 Users
Princess Frontier
Princess Frontier
NAN%
Tags
  • Priestess Heroine
  • Merchant Heroine
  • Middle Ages Europe
  • Nun Heroine
  • Knight Protagonist
Rating 7.4850 Users
Sorakoi
Sorakoi
NAN%
Tags
  • Hetare Protagonist
  • Twin Tail Heroine
  • Protagonist's Childhood Friend as a Heroine
  • Single Footjob
  • Oppai Loli Heroine
Rating 7.1645 Users
Natsu no Iro no Nostalgia
Natsu no Iro no Nostalgia
NAN%
Tags
  • Protagonist's Twin as a Heroine
  • Nakige
  • Slice of Life Drama
  • Brother/Sister Romance
  • Sunflowers
Rating 7.27140 Users
Himawari!! -Anata Dake o Mitsumeteru-
Himawari!! -Anata Dake o Mitsumeteru-
NAN%
Tags
  • Sunflowers
  • Heroine with Expressive Ahoge
  • Chuunibyou Heroine
  • Student Club Member Protagonist
  • Student Club President Heroine
Rating 7.3643 Users
Harem Game 2 ~Futsuu ja Nai Shujinkou ga Harem o Kizuku Fantasy (?)~
Harem Game 2 ~Futsuu ja Nai Shujinkou ga Harem o Kizuku Fantasy (?)~
34%
Tags
  • Invisibility
  • Heroine from a Different World
  • Model Heroine
  • Twincest
  • Oppai Loli Heroine
Rating 6.5942 Users
Usotsuki Ouji to Nayameru Ohime-sama -Princess Syndrome-
Usotsuki Ouji to Nayameru Ohime-sama -Princess Syndrome-
31%
Tags
  • Fictional Island Near Futuristic Japan
  • Heroine with Superpowered Side
  • Tall Heroine
  • Homemaker Protagonist
  • Naizuri
Rating 7.0744 Users
Koi Suru Kimochi no Hanakotoba
Koi Suru Kimochi no Hanakotoba
30%
Tags
  • Dormitory Manager Protagonist
  • Homemaker Protagonist
  • Naizuri
  • Gamer Heroine
  • School Dormitory
Rating 7.2118 Users
Prestar! ~Precious☆Star
Prestar! ~Precious☆Star's Festival~
30%
Tags
  • Musical Themes
  • School Festival
  • Mangaka Heroine
  • School Life Comedy
  • High School
Rating 6.4122 Users
1/7 no Mahoutsukai
1/7 no Mahoutsukai
29%
Tags
  • Brocon Support Character
  • Dual Wielding Swords
  • Childhood Promise
  • Dual Wielding Pistols
  • Close-up CGs
Rating 6.6833 Users
Chinkamo Twins 2! ~Natsu da! Umi da! Futago no Imouto Oppai Taiketsu da!~
Chinkamo Twins 2! ~Natsu da! Umi da! Futago no Imouto Oppai Taiketsu da!~
29%
Tags
  • Only Blood-related Heroines
  • Only Protagonist's Sisters as Heroine(s)
  • Unnamed Protagonist
  • Twin Footjob
  • Oppai Loli Heroine
Rating 6.3720 Users
Koiharu Adolescence
Koiharu Adolescence
29%
Tags
  • Ghost Heroine
  • Brocon Heroine
  • Protagonist's Senpai as a Heroine
  • Comedy
  • High Sexual Content
Rating 7.1256 Users
Shin Shirogane no Soleil -ReANSWER-
Shin Shirogane no Soleil -ReANSWER-
29%
Tags
  • Valkyrie Heroine
  • Homunculus Heroine
  • Heroine with Catsuit
  • Heroine with Eyepatch
  • Master and Servant
Rating 6.8329 Users
Himegoto Masquerade ~Ojousama-tachi no Tawamure~
Himegoto Masquerade ~Ojousama-tachi no Tawamure~
29%
Tags
  • Trap Protagonist
  • Spring
  • All-girls School
  • Pantyjob
  • Simulation Game
Rating 6.6824 Users
Gangsta Republica
Gangsta Republica
28%
Tags
  • Chuunibyou Protagonist
  • Student Club Member Protagonist
  • Tsukkomi Heroine
  • Brother/Sister Romance
  • Protagonist's Younger Sister as a Heroine
Rating 6.8152 Users
Sakura Mau Otome no Rondo ~Anata to Miru Fuyuzakura~
Sakura Mau Otome no Rondo ~Anata to Miru Fuyuzakura~
28%
Tags
  • Trap Protagonist
  • Narrating Others' Thoughts
  • School Dormitory
  • Protagonist with Voice Acting
  • Yamato Nadeshiko Heroine
Rating 6.7133 Users
Unlucky Re:Birth/Reverse
Unlucky Re:Birth/Reverse
28%
Tags
  • Extremely (un)Lucky Protagonist
  • Discipline Committee Leader Heroine
  • Varied Title Screens
  • Summoning
  • Modern Day Setting in a Fictional World
Rating 7.8065 Users
Sorakoi
Sorakoi
27%
Tags
  • Hetare Protagonist
  • Twin Tail Heroine
  • Protagonist's Childhood Friend as a Heroine
  • Single Footjob
  • Oppai Loli Heroine
Rating 7.1645 Users
Himawari!! -Anata Dake o Mitsumeteru-
Himawari!! -Anata Dake o Mitsumeteru-
27%
Tags
  • Sunflowers
  • Heroine with Expressive Ahoge
  • Chuunibyou Heroine
  • Student Club Member Protagonist
  • Student Club President Heroine
Rating 7.3643 Users
Mainichi ga Harem Sugite Ore wa Yome o Kimerarenai!
Mainichi ga Harem Sugite Ore wa Yome o Kimerarenai!
27%
Tags
  • Italian Heroine
  • Protagonist's Rival as a Heroine
  • Wealthy Protagonist
  • Arranged Marriage
  • Siscon Protagonist
Rating 6.7243 Users
Timepiece Ensemble
Timepiece Ensemble
26%
Tags
  • No Title Screen
  • School Festival
  • Production of Pornography (Drawn)
  • Mangaka Heroine
  • Poor Heroine
Rating 7.4049 Users
Ecchi de Hentai! Yakimochi Ojou-sama!!
Ecchi de Hentai! Yakimochi Ojou-sama!!
26%
Tags
  • Charming Protagonist
  • Popular Protagonist
  • School Festival
  • Protagonist's Sister as a Support Character
  • Yamato Nadeshiko Heroine
Rating 6.9536 Users
Harvest OverRay
Harvest OverRay
26%
Tags
  • Gamer Protagonist
  • Tsukkomi Protagonist
  • Built-in Encyclopedia
  • Martial Artist Heroine
  • Jump to Prior Choices
Rating 7.66107 Users
Guardian ☆ Place ~Do S na Imouto to 3-nin no Yome~
Guardian ☆ Place ~Do S na Imouto to 3-nin no Yome~
26%
Tags
  • Fictional Island Near Futuristic Japan
  • Mayadere Heroine
  • Fairy Support Character
  • Protagonist's Half-sister as a Heroine
  • Tournament
Rating 6.5544 Users
Kouyoku no Soleil -VII
Kouyoku no Soleil -VII's World-
25%
Tags
  • Valkyrie Heroine
  • Norse Mythology
  • Youkai Heroine
  • Goddess Heroine
  • Cthulhu Mythos
Rating 6.9121 Users
Fall in Love x 4 Tune
Fall in Love x 4 Tune
25%
Tags
  • Gentle Protagonist
  • Cupid Heroine
  • Goddess Heroine
  • Choices with 4 or More Options
  • Stockings
Rating 7.1267 Users
Kodomo no Asobi
Kodomo no Asobi
25%
Tags
  • Slice of Life Drama
  • Curse
  • Demon Heroine
  • Pure Love Story
  • Kneepit Sex
Rating 7.5773 Users
Mirai Kanojo
Mirai Kanojo
25%
Tags
  • Dormitory Manager Heroine
  • Selfcest
  • Comedic Love Triangle
  • Time Travel
  • Albino Heroine
Rating 7.0266 Users
Koisuru Shimai no Sextet
Koisuru Shimai no Sextet
24%
Tags
  • Heroine Sisters
  • Foolish Parent Support Character
  • Food Play
  • Perverted Friend
  • Blood-related Sister/Sister Incest
Rating 7.0270 Users

Prism Princess ~Futari no Himekishi to Kokan no Monshou~ 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.

Traits (171 total)

NameCharactersImportanceWeight
Fingerless Evening Gloves Clothes42.614.21
Strapless Dress Clothes52.183.90
Cuffs Clothes52.033.63
Shopping Engages in42.043.29
Mini-dress Clothes51.632.93
Sex with Protagonist Only Engages in (Sexual)41.682.70
Collar Clothes41.662.67
Twin Blade Sword Items13.622.51
Ankle Boots Clothes22.102.31
Transfer Student Role22.022.22
Monk Role13.182.21
Big Breasts Body61.132.20
Princess Role22.002.19
Clothing with Ribbons Clothes31.582.19
High Heeled Shoes Clothes21.952.14
Plate Armor Clothes21.912.10
Fighting Engages in41.292.07
Serious Personality31.492.06
Warawa Personality12.962.05
Sleeveless Turtleneck Sweater Clothes12.932.03
Ballerina Shoes Clothes12.922.03
Kemonomimi Hood Clothes12.882.00
Lace-up Shoes Clothes12.851.97
Flirting Engages in21.791.97
Chuunibyou Personality12.831.96
Pleated Skirt Clothes31.391.93
Teal Eyes21.721.89
Pet Collar Clothes12.721.89
Sports Shoes Clothes21.721.89
Thigh-high Stockings Clothes51.041.87
Microphone Items12.671.85
Pet Role12.641.83
Longsword Items12.621.82
Grandfather Role12.621.82
Dog Role12.541.76
Hair Beads Hair12.531.75
Hair Loopies Hair12.531.75
Wand Items12.521.75
Religion Engages in12.511.74
Apron Clothes21.581.74
Vaginal Fingering Subject of (Sexual)41.081.74
Bracelet Clothes21.561.71
Homeroom Teacher Role12.451.70
Gardening Engages in12.451.70
Ankle-Strap Shoes Clothes12.441.69
Spy Role12.431.69
Priest Role12.431.69
Zouri Clothes12.391.66
Ribbon Hair Tie Clothes31.191.65
Microskirt Clothes12.351.63
Seventh Posture Subject of (Sexual)21.461.61
Outdoor Sex Engages in (Sexual)31.161.60
Flower Clothes12.301.59
Sidehair Hair40.981.57
Bodyguard Role12.261.57
Tabi Clothes12.261.57
Twin Tails Hair31.131.57
Cooking Engages in21.421.56
High Heeled Boots Clothes12.241.55
Bald Hair12.231.54
Tareme Eyes31.111.53
High School Student Role50.851.53
Nipple Sucking Subject of (Sexual)21.381.52
Visible Nipples Body12.161.50
Attempted Murder Engages in12.161.50
Wavy Hair21.361.49
Not Sexually Involved Engages in (Sexual)21.351.49
Veil Clothes12.141.49
Off-The-Shoulder Shirt Clothes12.141.49
Boobjob Engages in (Sexual)31.071.48
Singing Engages in12.131.48
Wrinkles Body12.121.47
Management Role12.121.47
Knight Role12.121.47
White Hair21.331.46
Ahoge Hair21.321.45
Sweets Lover Personality12.101.45
Tiny Braid Hair12.071.44
Idol Role12.071.43
Student Council President Role12.071.43
Curtained Hair21.301.43
Thick Eyebrows Hair12.061.43
Brother Complex Personality12.061.43
Cloak Clothes12.041.41
Kemonomimi Headband Clothes12.041.41
Towel Clothes12.011.39
Demon Role12.011.39
Secretive Personality12.001.39
Spiky Bangs Hair31.001.39
Sex in Public Places Engages in (Sexual)21.261.38
Parted in Middle Hair21.251.37
Virgin Sex Engages in (Sexual)40.851.37
Naked Clothes11.951.35
School Uniform Clothes50.751.35
Handgun Items11.941.34
Old Body11.931.34
Antenna Hair11.931.34
Airhead Personality11.921.33
Schoolmate Role11.901.32
Beard Hair11.891.31
Straight Hair30.941.31
Waist Length+ Hair40.811.30
Naked Apron Clothes11.881.30
Unusual Hair Ornaments Clothes11.871.30
Tsundere Personality11.871.30
Twin Braids Hair11.871.29
Butterfly Subject of (Sexual)21.171.29
Multicolored Hair11.861.29
Twin Sister Role11.861.29
Puffy Sleeves Clothes11.851.28
Short-tempered Personality11.851.28
Handjob Engages in (Sexual)21.161.27
Strict Personality11.831.27
Moustache Hair11.831.27
Pretending Personality11.821.26
Eye Covering Hair11.801.25
Hidden Eyes11.801.25
Missionary Subject of (Sexual)21.121.23
Blowjob Engages in (Sexual)40.761.22
Skirt Suit Clothes11.741.21
Deredere Personality11.741.21
Outgoing Personality11.731.20
Proactive Personality11.711.19
Quickie Fix Subject of (Sexual)21.081.19
Loafers Clothes11.711.19
Arrogant Personality11.701.18
Confident Personality11.691.17
Naive Personality11.691.17
Loyal Personality11.691.17
Miniskirt Clothes21.061.17
Carefree Personality11.681.17
Intake Hair11.681.16
Stubborn Personality11.671.16
Kind Personality21.031.13
Slim Body60.581.12
Garter Belt Stockings Clothes11.621.12
Sex in Classroom Engages in (Sexual)11.611.11
Teen Body50.621.11
Kimono Clothes11.571.09
Magician Role11.571.09
Refined Personality11.541.07
Orange Hair11.511.05
Choker Clothes11.501.04
Necklace Clothes11.501.04
Green Hair11.481.02
Incest Engages in (Sexual)11.471.02
Doggy Style Subject of (Sexual)20.921.02
Daughter Role11.451.01
Younger Sister Role11.441.00
Tank Top Clothes11.410.98
Hair Tie Clothes11.410.97
Hairpin Clothes11.400.97
Blunt Bangs Hair11.400.97
Grey Hair11.380.96
Knee-high Socks Clothes11.380.96
Pink Hair11.330.92
Belt Clothes11.270.88
Childhood Friend Role11.260.87
Watashi Personality11.250.87
Dress Clothes11.250.87
Red Eyes11.200.83
Violet Hair11.190.83
Standing Sex Subject of (Sexual)11.180.81
Pale Body70.370.77
Violet Eyes11.050.72
Amber Eyes11.030.71
Shoulder-length Hair10.920.64
Brown Eyes10.900.63
Blond Hair10.890.62
Young-adult Body10.760.53
Long Hair10.750.52