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Summary

The protagonist Nanase Suzuna is a very normal college student. Her father died when she was a child, but suddenly one day her mother introduced her to the person she was going to get remarried to. Because of her mother's happy smile and how nice her new father seemed Suzuna approved of the marriage and she prepared to move into her new fathers house but... On the day of the move, at the imposing gated mansion, she learned that her new father had four sons! Suzuna was shocked! More than that, her mother and new father were going away for a week and leaving her to live alone with her four new brothers (and their servant Kageyama) under the same roof. Then Suzuna received a proposal from those brothers. "If you can make us approve of you as our little sister within one week, we'll bless those two's marriage." She hoped for her parent's happiness so Suzuna happily accepted but... In truth the brothers already objected to the marriage, little did Suzuna know but to them this was just the start of another game. "How about we bet on which one of us brothers Suzuna will fall for first?" It's one week until her father and mother come back, will Suzuna be able to protect herself!? Will she be able to build sibling bonds with her new brothers!? What is the true nature of Kageyama who is always watching over the five of them!? Now this skillfully dangerous battle of one little sister VS four big brothers + one man will start――! [Translated from the official site]

Gakuen Heaven: Boy
Gakuen Heaven: Boy's Love Scramble!
NAN%
Tags
  • Extremely (un)Lucky Protagonist
  • Archer Hero
  • All-boys School
  • Student Club President Hero
  • Student Club Member Hero
Rating 6.8546 Users
Kago no Naka no Alicis
Kago no Naka no Alicis
NAN%
Tags
  • Noble Hero
  • Fighting Hero
  • Unlockable Routes
  • Long Common Route
  • Combat Capable Friends
Rating 6.0423 Users
Ikemen Bakumatsu ◆ Unmei no Koi
Ikemen Bakumatsu ◆ Unmei no Koi
NAN%
Tags
  • Shinsengumi
  • Samurai Hero
  • Bakumatsu Era
  • Hero Based on Real Person
  • Hero in Kimono
Rating 6.0235 Users
Mononoke Kiss
Mononoke Kiss
NAN%
Tags
  • Youkai Hero
  • Kitsune Hero
  • Bodyguard Hero
  • Hime Protagonist
  • Hero with a Sword
Rating 6.5341 Users
Crazy★Rabbits -Wakaresasegyou no Usagiri Jimusho-
Crazy★Rabbits -Wakaresasegyou no Usagiri Jimusho-
NAN%
Tags
  • Albino Hero
  • Modern Day Tokyo
  • Okama Support Character
  • Lawyer Hero
  • Bartender Hero
Rating 6.2322 Users
Black Wolves Saga -Bloody Nightmare-
Black Wolves Saga -Bloody Nightmare-
NAN%
Tags
  • Genocide
  • Obsession
  • Gothic Romance
  • Catboy Hero
  • Discrimination
Rating 8.19333 Users
Will o
Will o' Wisp
NAN%
Tags
  • Living Doll Hero
  • 19th Century
  • Hero with Gothic Look
  • Past British Isles
  • Living Doll Support Character
Rating 6.6838 Users
Bloody Call
Bloody Call
NAN%
Tags
  • Personal Armed Combat
  • Fictional Modern Day Japanese Town
  • Sword Combat
  • Animated Ending
  • Action
Rating 7.79109 Users
Akazukin to Mayoi no Mori
Akazukin to Mayoi no Mori
NAN%
Tags
  • May-December Romance
  • Strong Female Protagonist
  • Kemonomimi Hero
  • Non-human Hero
  • Protagonist Based on a Fictional Person
Rating 6.78141 Users
Under the Moon
Under the Moon
NAN%
Tags
  • Princess Protagonist
  • Protagonist with Gothic Look
  • Loli Protagonist
  • Maou Hero
  • Hero with Gothic Look
Rating 7.21104 Users
Under the Moon ~Tsukiiro Ehon~
Under the Moon ~Tsukiiro Ehon~
NAN%
Tags
  • Catboy Hero
  • Twin Brothers as Heroes
  • Maou Hero
  • Demon Protagonist
  • Demon Hero
Rating 7.4736 Users
Enkan no Memoria
Enkan no Memoria
NAN%
Tags
  • God Hero
  • Inventor Hero
  • Chosen Choices Marking
  • Correct Choice Indicator
  • Transfer Student Hero
Rating 6.2538 Users
Torikago no Marriage
Torikago no Marriage
NAN%
Tags
  • Completion Status Indicator
  • Voice Saving
  • Unavoidable Protagonist Rape
  • Masochist Hero
  • Romancing a Family
Rating 6.4457 Users
Kuro to Kin no Akanai Kagi.
Kuro to Kin no Akanai Kagi.
NAN%
Tags
  • Siscon Hero
  • Beautician Hero
  • Hikikomori Protagonist
  • Protagonist's Non-blood-related Brother as a Hero
  • Softcore
Rating 6.25104 Users
Heart no Kuni no Alice ~Wonderful Wonder World~
Heart no Kuni no Alice ~Wonderful Wonder World~
NAN%
Tags
  • Protagonist Based on a Fictional Person
  • Wonderland
  • Hero Based on a Fictional Person
  • Clock Tower
  • Identity Crisis
Rating 7.68190 Users
Orfleurs
Orfleurs
NAN%
Tags
  • Noble Hero
  • Hikikomori Hero
  • Wealthy Hero
  • Maid Protagonist
  • Mischievous Hero
Rating 6.7748 Users
Geinoukai wa Abunai Kankei Ari Desu ka?
Geinoukai wa Abunai Kankei Ari Desu ka?
NAN%
Tags
  • Forbidden Love
  • Model Hero
  • Singer Hero
  • Idol Hero
  • Actor Hero
Rating 5.4129 Users
Onedari ShareMate
Onedari ShareMate
NAN%
Tags
  • Host Club Hero
  • Sibling Rivalry
  • Share House
  • Half-orphan Hero
  • Half-Japanese Hero
Rating 6.3934 Users
Trick or Alice
Trick or Alice
NAN%
Tags
  • Androgynous Hero
  • Protagonist Based on a Fictional Person
  • Protagonist's Side Image Toggle
  • Wonderland
  • Hero Based on a Fictional Person
Rating 6.7545 Users
Mashou Megane
Mashou Megane
NAN%
Tags
  • Protagonist's Side Image Toggle
  • Chosen Choices Marking
  • Necrophilia
  • Read Text Marking
  • Hero Based on a Fictional Person
Rating 6.7252 Users
Kichiku Megane R Kichiku Megane Fan Disc
Kichiku Megane R Kichiku Megane Fan Disc
NAN%
Tags
  • Homosexual Male Protagonist
  • Protagonist with Multiple Personalities
  • Typing Game
  • Salaryman Hero
  • Selfcest
Rating 7.7659 Users
Danna-sama ga 7-nin iru!?
Danna-sama ga 7-nin iru!?
NAN%
Tags
  • Performing Arts Director Hero
  • Lawyer Hero
  • Singer Hero
  • Bartender Hero
  • Western-style Manor
Rating 6.2320 Users
Garnet Cradle
Garnet Cradle
NAN%
Tags
  • Arabian-Style Palace
  • Hero with a Sword
  • Reincarnation
  • Palace
  • Ojousama Protagonist
Rating 7.5060 Users
Love☆Drops ~Miracle Doukyo Monogatari~
Love☆Drops ~Miracle Doukyo Monogatari~
NAN%
Tags
  • Non-human Hero
  • Interracial/interspecies Romance
  • Student Hero
  • Playboy Hero
  • Protagonist's Kouhai as a Hero
Rating 6.4027 Users
Butlers ~Meshimase Ojou-sama~
Butlers ~Meshimase Ojou-sama~
30%
Tags
  • Butler Hero
  • Hero with Heterochromia
  • Cook Hero
  • Orphan Protagonist
  • Only Adult Heroes
Rating 6.5629 Users
Asaki, Yumemishi
Asaki, Yumemishi
24%
Tags
  • Fictional Modern Day Japanese Countryside
  • Japanese Mythology
  • Asian-style Manor
  • Forest
  • Combat Capable Friends
Rating 7.4646 Users
Kuro to Kin no Akanai Kagi.
Kuro to Kin no Akanai Kagi.
23%
Tags
  • Siscon Hero
  • Beautician Hero
  • Hikikomori Protagonist
  • Protagonist's Non-blood-related Brother as a Hero
  • Softcore
Rating 6.25104 Users
Torikago no Marriage
Torikago no Marriage
23%
Tags
  • Completion Status Indicator
  • Voice Saving
  • Unavoidable Protagonist Rape
  • Masochist Hero
  • Romancing a Family
Rating 6.4457 Users
Enkan no Memoria
Enkan no Memoria
21%
Tags
  • God Hero
  • Inventor Hero
  • Chosen Choices Marking
  • Correct Choice Indicator
  • Transfer Student Hero
Rating 6.2538 Users
Under the Moon
Under the Moon
20%
Tags
  • Princess Protagonist
  • Protagonist with Gothic Look
  • Loli Protagonist
  • Maou Hero
  • Hero with Gothic Look
Rating 7.21104 Users
Under the Moon ~Tsukiiro Ehon~
Under the Moon ~Tsukiiro Ehon~
20%
Tags
  • Catboy Hero
  • Twin Brothers as Heroes
  • Maou Hero
  • Demon Protagonist
  • Demon Hero
Rating 7.4736 Users
Bloody Call
Bloody Call
20%
Tags
  • Personal Armed Combat
  • Fictional Modern Day Japanese Town
  • Sword Combat
  • Animated Ending
  • Action
Rating 7.79109 Users
Akazukin to Mayoi no Mori
Akazukin to Mayoi no Mori
20%
Tags
  • May-December Romance
  • Strong Female Protagonist
  • Kemonomimi Hero
  • Non-human Hero
  • Protagonist Based on a Fictional Person
Rating 6.78141 Users
Orfleurs
Orfleurs
19%
Tags
  • Noble Hero
  • Hikikomori Hero
  • Wealthy Hero
  • Maid Protagonist
  • Mischievous Hero
Rating 6.7748 Users
Onedari ShareMate
Onedari ShareMate
18%
Tags
  • Host Club Hero
  • Sibling Rivalry
  • Share House
  • Half-orphan Hero
  • Half-Japanese Hero
Rating 6.3934 Users
Mashou Megane
Mashou Megane
18%
Tags
  • Protagonist's Side Image Toggle
  • Chosen Choices Marking
  • Necrophilia
  • Read Text Marking
  • Hero Based on a Fictional Person
Rating 6.7252 Users
Danna-sama ga 7-nin iru!?
Danna-sama ga 7-nin iru!?
18%
Tags
  • Performing Arts Director Hero
  • Lawyer Hero
  • Singer Hero
  • Bartender Hero
  • Western-style Manor
Rating 6.2320 Users
Love☆Drops ~Miracle Doukyo Monogatari~
Love☆Drops ~Miracle Doukyo Monogatari~
17%
Tags
  • Non-human Hero
  • Interracial/interspecies Romance
  • Student Hero
  • Playboy Hero
  • Protagonist's Kouhai as a Hero
Rating 6.4027 Users
Diary
Diary
17%
Tags
  • Passage of Time
  • Half-orphan Hero
  • Model Hero
  • Hero with Psychological Problems
  • Middle School Student Hero
Rating 6.0127 Users
Furue, Yurayura to
Furue, Yurayura to
16%
Tags
  • Heian Period
  • Hero Based on Real Person
  • Dark Fantasy
  • Literary Adaptation
  • Voiced Default Name
Rating 5.6422 Users
Okashi na Shima no Peter Pan ~Sweet Never Land~
Okashi na Shima no Peter Pan ~Sweet Never Land~
16%
Tags
  • Hero with Monocle
  • Protagonist's Brother as a Hero
  • Hero with Eye Covering Hairstyle
  • Hero with Eyepatch
  • Fairy Tale
Rating 6.5423 Users
Princess Nightmare
Princess Nightmare
16%
Tags
  • Protagonist's Non-blood-related Father as a Hero
  • Vampire Protagonist
  • Protagonist with Gothic Look
  • Cyborg Hero
  • Vampire Hunter Hero
Rating 7.12169 Users
Ijiwaru MyMaster
Ijiwaru MyMaster
16%
Tags
  • Incubi
  • Hero with Multiple Personalities
  • Roses
  • Dragon Hero
  • Demons
Rating 7.31107 Users
Dare ni Demo Ura ga Aru -True or Lie?-
Dare ni Demo Ura ga Aru -True or Lie?-
16%
Tags
  • Protagonist Selection
  • Slice of Life
  • Modern Day Japan
  • Female Friend
  • Student Hero
Rating 6.2722 Users
Blackish House
Blackish House
16%
Tags
  • Actor/Actress Protagonist
  • Graphic Violence
  • Violence
  • Central Hero
  • Seiyuu Hero
Rating 8.2181 Users
Jooubachi no Oubou
Jooubachi no Oubou
15%
Tags
  • Insects
  • Masochist Hero
  • Royal Protagonist
  • Protagonist with Gothic Look
  • Princess Protagonist
Rating 6.26115 Users
NOISE ―voice of snow―
NOISE ―voice of snow―
15%
Tags
  • Dual Wielding Pistols
  • Protagonist with Superpowered Side
  • Shota Support Character
  • Adult Hero
  • Pistol Combat
Rating 7.4227 Users
Ouji-sama to Ikenai Keiyaku Kekkon
Ouji-sama to Ikenai Keiyaku Kekkon
14%
Tags
  • More Than Seven Heroes
  • Royal Hero
  • Gacha Game
  • Hero with Eyepatch
  • Hero with Beauty Mark
Rating 6.1020 Users

Brothers ~Koi Suru Onii-sama~ 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 (58 total)

NameScoreImportanceWeight
Only Protagonist's Brothers as Hero(es)3.003.7111.14
Brocon Protagonist3.003.199.57
Half-orphan Hero3.002.998.96
Protagonist's Non-blood-related Brother as a Hero3.002.657.94
Siscon Hero2.502.957.37
Softcore3.002.447.33
Avoidable Rape3.002.347.03
Romancing a Family3.002.076.20
Model Hero2.002.915.82
School Sports Club Member Hero2.002.885.76
Non-blood-related Brother/Sister Incest3.001.775.30
Actor Hero2.002.595.18
Adult Hero3.001.695.08
Athlete Hero2.002.505.00
Butler Hero2.002.484.97
Half-orphan Protagonist2.002.474.93
Medical Doctor Hero2.002.414.82
Wedding2.501.904.74
Hero with Sexual Experience2.002.374.74
Musician Hero2.002.304.59
Pre-rendered 3D Backgrounds2.002.274.54
University2.002.274.54
University Student Hero2.002.184.35
Drama3.001.434.28
Wealthy Hero2.002.134.26
Protagonist with Voice Acting3.001.364.08
University Student Protagonist2.501.523.81
Mother Support Character2.001.783.56
Threesome Ending2.001.743.48
Only Adult Heroes2.001.593.18
Otome Game3.001.023.07
Fingering2.001.523.05
Siscon Support Character1.003.033.03
Romance3.000.902.69
More Than Seven Endings2.001.332.66
Modern Day Japan2.001.322.65
Map Movement2.001.312.62
Multiple Protagonists1.501.502.25
Blowjob2.001.112.23
Sex in Public Places2.001.092.17
Group Sex of One Female and Several Males2.001.082.15
Female Protagonist3.000.712.14
Oyaji Hero1.002.102.10
Remote-controlled Vibrator1.002.062.06
Adult Protagonist2.001.032.05
Mirror Sex1.002.032.03
Brocon Support Character0.673.032.03
Multiple Endings3.000.672.01
Outdoor Sex2.001.001.99
Protagonist with a Face3.000.641.93
Missionary Position2.000.941.88
Nameable Protagonist2.000.911.83
Doggy Style2.000.801.61
Sexual Content2.500.631.57
Bathroom Sex1.001.191.19
Protagonist with a Sprite1.001.141.14
Modern Day0.671.571.05
ADV3.000.150.44

Traits (155 total)

NameCharactersImportanceWeight
Step Brother Role42.734.40
Non-blood-related Son Role42.494.00
Non-blood-related Incest Engages in (Sexual)52.163.86
Half-orphan Role52.113.78
Ceremonial Japanese Clothing Clothes23.053.36
Cheerleader Role22.763.03
Driving Engages in32.173.01
Son Role41.822.93
Older Brother Role41.732.78
Cleaning Engages in31.992.75
Younger Brother Role31.902.63
University Student Role41.592.56
Student Club Member Role22.322.55
Mirror Sex Engages in (Sexual)22.312.53
Mature Personality31.812.51
Swordsmanship Engages in22.152.36
Earrings Clothes41.422.29
Cooking Engages in41.422.28
Relaxed Personality31.642.27
Sunglasses Clothes22.002.20
Selfish Personality21.962.15
Ring Clothes21.942.13
Hard Worker Personality31.542.13
Pendant Necklace Clothes31.522.11
Necklace Clothes31.502.08
Superficial Personality12.972.06
Belt Clothes41.272.05
Friendly Personality41.221.96
Mullet Hair12.821.95
Soccer Engages in12.771.92
Outgoing Personality21.741.91
Vaginal/Anal Sexual Toys Subject of (Sexual)21.721.90
Not Sexually Involved Engages in (Sexual)31.361.88
Garter Clothes12.711.88
Loyal Personality21.691.85
Stubborn Personality21.681.84
Perfectionist Personality12.611.81
Muscular Body21.641.81
Pacifist Personality12.611.81
Old-fashioned Personality12.581.79
Non-blood-related Father Role12.581.79
Kendo Engages in12.571.78
Pianist Role12.561.78
School Sports Club Member Role12.551.77
Widower Role12.531.75
Model Role12.521.75
Secretary Role12.481.72
Kimono Clothes21.561.72
Goggles Clothes12.481.72
Gardening Engages in12.451.70
Refined Personality21.541.69
Butler Role12.441.69
Step Sister Role12.431.68
Energetic Personality21.521.67
Classic Tsundere Personality12.401.66
Helmet Clothes12.391.66
Kind Personality41.031.65
Trousers Clothes31.191.65
Non-blood-related Mother Role12.371.65
Writer Role12.371.64
Haraguro Personality12.371.64
Serious Personality21.491.63
Actor Role12.361.63
Non-blood-related Daughter Role12.361.63
Spiky Bangs Hair41.001.61
Distrustful Personality12.291.59
Flower Clothes12.291.59
Young-adult Body70.761.59
Suit Clothes21.441.58
Bodyguard Role12.261.57
Tank Top Clothes21.421.56
Jacket Clothes21.421.56
Famous Role12.241.56
Martial Arts Engages in12.241.55
Brooch Clothes12.221.54
Widow Role12.201.53
Nature Lover Personality12.191.52
Pet Owner Role12.171.50
Hosome Eyes21.371.50
Charismatic Personality12.161.50
Wavy Hair21.361.49
Itome Eyes12.131.47
Hotblooded Personality12.101.46
Sports Uniform Clothes12.091.45
Medical Doctor Role12.091.45
T-shirt Clothes21.311.44
Tall Body12.051.42
Shopping Engages in12.041.42
Bow Tie Clothes12.041.42
Optimist Personality12.031.41
Emotional Personality12.021.40
Watch Clothes12.011.40
Sixty-nine Engages in (Sexual)21.261.38
Parted in Middle Hair21.251.38
Katana Items11.971.36
Taciturn Personality11.941.35
Immature Personality11.931.34
Group Sex of Multiple Females and Males Engages in (Sexual)11.911.32
Friend Role21.201.32
Part-time Worker Role11.901.32
Multicolored Hair11.861.29
Shirt Clothes21.161.27
Shoulder-length Hair30.921.27
Strict Personality11.831.27
Husband Role11.801.25
Lab Coat Clothes11.801.25
Nameable Role11.781.24
Necktie Clothes21.111.22
Mischievous Personality11.731.20
Sports Shoes Clothes11.721.20
Reserved Personality11.721.19
Hoodie Clothes11.711.18
Confident Personality11.701.18
Arrogant Personality11.701.18
Stoic Personality11.701.18
Carefree Personality11.681.16
Father Role11.671.16
No Bangs Hair11.661.15
Garnet Eyes11.661.15
Sweater Clothes11.641.14
Popular Role11.631.13
Pervert Personality11.631.13
Shy Personality11.621.12
Green Eyes21.021.12
Grey Eyes11.601.11
Apron Clothes11.591.10
Wife Role11.541.06
Choker Clothes11.501.04
Long Hair30.751.04
Green Hair11.481.02
Mother Role11.461.01
Smart Personality11.461.01
Daughter Role11.461.01
Younger Sister Role11.441.00
V Bangs Hair11.410.98
Gloves Clothes11.410.98
Blond Hair20.890.97
Hairpin Clothes11.400.97
Tsurime Eyes11.380.96
Brown Hair30.680.95
Red Hair11.320.92
Ahoge Hair11.320.91
Blue Eyes20.800.88
Sex in Public Places Engages in (Sexual)11.260.87
Pale Body90.370.85
Short Hair30.610.84
Blue Hair11.190.83
Outdoor Sex Engages in (Sexual)11.160.80
Tareme Eyes11.100.76
Glasses Clothes11.080.75
Miniskirt Clothes11.060.74
Violet Eyes11.040.72
Thigh-high Stockings Clothes11.040.72
Black Hair10.810.56
Slim Body10.580.40