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Summary

Shun lives alone with his sister Yuna after their father remarries. Yuna acts harshly to Shun and often yells at him for the slightest mistakes. Suddenly Haruka arrives unannounced and claims to be Shun and Yuna's new sister. Since she's Shun's new sister she believes that must mean they love each other and if they love each other that must mean they're engaged to be married and if they're engaged to be married that must mean they should do ecchi things together. Yuna fights back for her brother and announces that she won't give Shun up to Haruka or anyone! Haruka then concludes that Yuna must love Shun too and if she loves Shun too that must mean they're engaged to be married as well and if they're engaged to be married as well that must mean they should all do ecchi things together!

Hoka no Onna no Ko to H o Shiteiru Ore o Mite Koufun Suru Kanojo
Hoka no Onna no Ko to H o Shiteiru Ore o Mite Koufun Suru Kanojo
NAN%
Tags
  • Reverse Netorase
  • Protagonist's Girlfriend as a Heroine
  • Central Heroine
  • Sex in Front of an Audience
  • Protagonist in Relationship
Rating 6.28250 Users
Yome no Imouto to no In
Yome no Imouto to no In'ai ~Tsuma ni Kakurete Majiwaru Otto to Gimai~
NAN%
Tags
  • Secret Romance
  • In-law Incest
  • Reverse Netorare
  • Protagonist's Sister-in-Law as a Heroine
  • Forbidden Love
Rating 5.56322 Users
relations sister×sister.
relations sister×sister.
NAN%
Tags
  • Heroine Sisters
  • Waitress Heroine
  • Protagonist's Non-blood-related Sister as a Heroine
  • Slice of Life
  • Love Triangle
Rating 6.4633 Users
Honey Coming
Honey Coming
NAN%
Tags
  • Protagonist's Sister-in-Law as a Heroine
  • Emotionless Heroine
  • Sprite Viewer
  • Half-Japanese Heroine
  • Pure Love Story
Rating 7.4956 Users
Natsuiro Shimai ~Osananajimi to Manatsu no Himegoto~
Natsuiro Shimai ~Osananajimi to Manatsu no Himegoto~
NAN%
Tags
  • Shimaidon with Twins
  • Countryside
  • Comedic Love Triangle
  • Homecoming
  • Twin Sisters as Heroines
Rating 6.27196 Users
Imouto Paradise! 3 ~Onii-chan to Gonin no Imouto no Sugo~ku! Ecchi Shimakuri na Mainichi~
Imouto Paradise! 3 ~Onii-chan to Gonin no Imouto no Sugo~ku! Ecchi Shimakuri na Mainichi~
NAN%
Tags
  • Sprite Filter
  • Non-twin Heroine Sisters
  • Protagonist's Full Sister as a Heroine
  • Family Life Comedy
  • Only Protagonist's Sisters as Heroine(s)
Rating 7.09517 Users
Joshikousei Houkago Seikyouiku ~Yowami o Nigitte Nama Hame Seikatsu Shidou~
Joshikousei Houkago Seikyouiku ~Yowami o Nigitte Nama Hame Seikatsu Shidou~
NAN%
Tags
  • Unavoidable Rape
  • Rapist Protagonist
  • Teacher Protagonist
  • School
  • Single Ending
Rating 6.4021 Users
Hara Miko Shimai
Hara Miko Shimai
NAN%
Tags
  • Shinto Shrine
  • Exorcism
  • Miko Heroine
  • Floating Textbox
  • Unlockable Harem Ending
Rating 5.97121 Users
NekoMiko
NekoMiko
NAN%
Tags
  • Modern Day Akihabara
  • No "Keep Voice on Click" Option
  • Catgirl Heroine
  • Apartment Building
  • Extremely (un)Lucky Protagonist
Rating 6.22470 Users
Wanko no Yomeiri ~Youkoso! Inu no Shippo e~
Wanko no Yomeiri ~Youkoso! Inu no Shippo e~
NAN%
Tags
  • Doggirl Heroine
  • Kemonomimi Heroine
  • Heroine with Kimono
  • Heroine with Spats
  • Shinto Shrine
Rating 6.5568 Users
Youkoso♪ Seerua Gakuen Nakadashi Festival
Youkoso♪ Seerua Gakuen Nakadashi Festival
NAN%
Tags
  • Student Council President Protagonist
  • Student Council Member Heroine
  • Student Council
  • School Festival
  • Exhibitionism
Rating 5.54132 Users
Natsu no Osananajimi to, Fuyu no Kanojo
Natsu no Osananajimi to, Fuyu no Kanojo
NAN%
Tags
  • Student-Teacher Romance
  • Siscon Protagonist
  • Cousin Incest
  • Half-Japanese Heroine
  • Foreigner Heroine
Rating 7.0028 Users
Hara ☆ Kano!! ~Ano Ko to Lovelove Harabote Seikatsu~
Hara ☆ Kano!! ~Ano Ko to Lovelove Harabote Seikatsu~
NAN%
Tags
  • Mahjong as Story Element
  • Harem Ending with Theme
  • Homemaker Protagonist
  • Incest Romance
  • Mother/Son Incest
Rating 6.64388 Users
Dear Sister ~Mayu wa Onii-chan no Mono nan Dakara ne!!~
Dear Sister ~Mayu wa Onii-chan no Mono nan Dakara ne!!~
NAN%
Tags
  • Only Blood-related Heroines
  • Blood-related Brother/Sister Incest
  • Only Protagonist's Sisters as Heroine(s)
  • Only Younger Heroines
  • Hidden Vibrator
Rating 6.3627 Users
Imouto to Hokentaiiku
Imouto to Hokentaiiku
NAN%
Tags
  • Protagonist's Blood-related Sister as a Heroine
  • Straight Lolicon
  • Blood-related Brother/Sister Incest
  • Only Blood-related Heroines
  • Only Protagonist's Sisters as Heroine(s)
Rating 6.0255 Users
Aerial Life
Aerial Life
NAN%
Tags
  • Gaming
  • Confinement in a Simulated Reality
  • Virtual Reality
  • Gamer Heroine
  • Protagonist's Kouhai as a Heroine
Rating 6.2923 Users
Uchi no Imouto
Uchi no Imouto
NAN%
Tags
  • Protagonist's Sister as a Heroine
  • Protagonist's Blood-related Sister as a Heroine
  • Brother/Sister Romance
  • Protagonist's Full Sister as a Heroine
  • Incest Romance
Rating 6.79313 Users
Maman Kyoushitsu ~Mirai no H na Obenkyou~
Maman Kyoushitsu ~Mirai no H na Obenkyou~
NAN%
Tags
  • Human Childbirth
  • Pregnant Heroine
  • Quiz Game
  • Pregnancy Good Ending
  • Divorcee Heroine
Rating 6.72490 Users
Wan Nyan ☆ A La Mode! ~Docchi ni Suru no? Wan Nyan H na Café Jijou!~
Wan Nyan ☆ A La Mode! ~Docchi ni Suru no? Wan Nyan H na Café Jijou!~
NAN%
Tags
  • Comedic Love Triangle
  • Baker Protagonist
  • Clothed Boobjob
  • Changeable Clothes
  • Donkan Protagonist
Rating 6.56188 Users
Imouto Paradise! ~Onii-chan to Gonin no Imouto no Ecchi Shimakuri na Mainichi~
Imouto Paradise! ~Onii-chan to Gonin no Imouto no Ecchi Shimakuri na Mainichi~
NAN%
Tags
  • Harem Ending with Theme
  • Family Life Comedy
  • Siscon Protagonist
  • Domicile
  • Non-twin Heroine Sisters
Rating 6.561,792 Users
Osananajimi wa Daitouryou: My girlfriend is the PRESIDENT. Fandisc
Osananajimi wa Daitouryou: My girlfriend is the PRESIDENT. Fandisc
NAN%
Tags
  • Threesome Ending
  • Student Council Member Protagonist
  • Heroine with Small Breasts (Non-Loli)
  • Russian Heroine
  • Threesome
Rating 6.78739 Users
Namaiki!
Namaiki!
NAN%
Tags
  • Non-twin Heroine Sisters
  • Only Protagonist's Sisters as Heroine(s)
  • Siscon Protagonist
  • Submissive Protagonist
  • Naizuri
Rating 6.6563 Users
Hanairo Heptagram
Hanairo Heptagram
NAN%
Tags
  • Broadcasting Club
  • Impulsive Protagonist
  • Cook Support Character
  • Exorcism
  • Principal Heroine
Rating 7.36109 Users
Neko-nin exHeart
Neko-nin exHeart
NAN%
Tags
  • Sex Scene Recollection
  • Interracial/interspecies Romance
  • Kunoichi Heroine
  • Catgirl Heroine
  • Shimaidon Ending
Rating 6.38828 Users
Mai Yome ~My Yome~
Mai Yome ~My Yome~
16%
Tags
  • Sex Involving Children
  • Only Younger Heroines
  • Only Protagonist's Sisters as Heroine(s)
  • Only Loli Heroines
  • Deredere Heroine
Rating 5.6020 Users
Miinasan, Kakkee Desu! -Love Icha Doukyo Seikatsu no Susume-
Miinasan, Kakkee Desu! -Love Icha Doukyo Seikatsu no Susume-
14%
Tags
  • Reverse Netorare
  • Defloration During Common Route
  • Protagonist's Girlfriend as a Heroine
  • Betrayal
  • Infidelity
Rating 6.8744 Users
Dear Sister ~Mayu wa Onii-chan no Mono nan Dakara ne!!~
Dear Sister ~Mayu wa Onii-chan no Mono nan Dakara ne!!~
14%
Tags
  • Only Blood-related Heroines
  • Blood-related Brother/Sister Incest
  • Only Protagonist's Sisters as Heroine(s)
  • Only Younger Heroines
  • Hidden Vibrator
Rating 6.3627 Users
Hara ☆ Kano!! ~Ano Ko to Lovelove Harabote Seikatsu~
Hara ☆ Kano!! ~Ano Ko to Lovelove Harabote Seikatsu~
13%
Tags
  • Mahjong as Story Element
  • Harem Ending with Theme
  • Homemaker Protagonist
  • Incest Romance
  • Mother/Son Incest
Rating 6.64388 Users
Natsu no Osananajimi to, Fuyu no Kanojo
Natsu no Osananajimi to, Fuyu no Kanojo
13%
Tags
  • Student-Teacher Romance
  • Siscon Protagonist
  • Cousin Incest
  • Half-Japanese Heroine
  • Foreigner Heroine
Rating 7.0028 Users
Wanko no Yomeiri ~Youkoso! Inu no Shippo e~
Wanko no Yomeiri ~Youkoso! Inu no Shippo e~
12%
Tags
  • Doggirl Heroine
  • Kemonomimi Heroine
  • Heroine with Kimono
  • Heroine with Spats
  • Shinto Shrine
Rating 6.5568 Users
Youkoso♪ Seerua Gakuen Nakadashi Festival
Youkoso♪ Seerua Gakuen Nakadashi Festival
12%
Tags
  • Student Council President Protagonist
  • Student Council Member Heroine
  • Student Council
  • School Festival
  • Exhibitionism
Rating 5.54132 Users
Hara Miko Shimai
Hara Miko Shimai
12%
Tags
  • Shinto Shrine
  • Exorcism
  • Miko Heroine
  • Floating Textbox
  • Unlockable Harem Ending
Rating 5.97121 Users
NekoMiko
NekoMiko
12%
Tags
  • Modern Day Akihabara
  • No "Keep Voice on Click" Option
  • Catgirl Heroine
  • Apartment Building
  • Extremely (un)Lucky Protagonist
Rating 6.22470 Users
Aerial Life
Aerial Life
11%
Tags
  • Gaming
  • Confinement in a Simulated Reality
  • Virtual Reality
  • Gamer Heroine
  • Protagonist's Kouhai as a Heroine
Rating 6.2923 Users
Maman Kyoushitsu ~Mirai no H na Obenkyou~
Maman Kyoushitsu ~Mirai no H na Obenkyou~
11%
Tags
  • Human Childbirth
  • Pregnant Heroine
  • Quiz Game
  • Pregnancy Good Ending
  • Divorcee Heroine
Rating 6.72490 Users
Imouto Paradise! ~Onii-chan to Gonin no Imouto no Ecchi Shimakuri na Mainichi~
Imouto Paradise! ~Onii-chan to Gonin no Imouto no Ecchi Shimakuri na Mainichi~
11%
Tags
  • Harem Ending with Theme
  • Family Life Comedy
  • Siscon Protagonist
  • Domicile
  • Non-twin Heroine Sisters
Rating 6.561,792 Users
Namaiki!
Namaiki!
11%
Tags
  • Non-twin Heroine Sisters
  • Only Protagonist's Sisters as Heroine(s)
  • Siscon Protagonist
  • Submissive Protagonist
  • Naizuri
Rating 6.6563 Users
Neko-nin exHeart
Neko-nin exHeart
11%
Tags
  • Sex Scene Recollection
  • Interracial/interspecies Romance
  • Kunoichi Heroine
  • Catgirl Heroine
  • Shimaidon Ending
Rating 6.38828 Users
Kakeochi
Kakeochi
11%
Tags
  • Heroine with a Sundress
  • Pure Love Story
  • Reunion
  • Protagonist's Childhood Friend as a Heroine
  • Single Handjob
Rating 5.9720 Users
Oppai Café ~Oyako de Cos Chichi~
Oppai Café ~Oyako de Cos Chichi~
11%
Tags
  • Braless Heroine
  • Incest Romance
  • Only Blood-related Heroines
  • Forbidden Love
  • Heroine with Inverted Nipples
Rating 5.97280 Users
Hara ☆ Chuchu!! ~Kameba Ano Ko mo H na Tenshi~
Hara ☆ Chuchu!! ~Kameba Ano Ko mo H na Tenshi~
10%
Tags
  • Heroine with Visible Panties
  • Sex Under the Necessity
  • Protagonist's Full Sister as a Heroine
  • Highly Animated Sprites
  • Half-demon Heroine
Rating 6.82152 Users
Kyoudai Hiai ~Iya na no ni, Kanjichau~
Kyoudai Hiai ~Iya na no ni, Kanjichau~
10%
Tags
  • Twincest
  • Correct Choice Indicator
  • Consensual Chikan
  • Protagonist's Younger Sister as a Heroine
  • Protagonist's Full Sister as a Heroine
Rating 5.52328 Users
Maki Fes!
Maki Fes!
10%
Tags
  • Multi-Selection Choices
  • Protagonist's Girlfriend as a Heroine
  • Protagonist as the Only Male
  • Idol Heroine
  • Scenario Selection
Rating 6.40163 Users
Hinata Terrace ~We Don
Hinata Terrace ~We Don't Abandon You.~
10%
Tags
  • Popular Protagonist
  • Class President Heroine
  • School Dormitory
  • Imouto-type Heroine
  • Orphan Protagonist
Rating 6.9629 Users
Kiss + 100 Kiss Tokku, Shidou Seri
Kiss + 100 Kiss Tokku, Shidou Seri
10%
Tags
  • Consensual Group Sex of One Female and Several Males
  • Completely Avoidable Netorare
  • Fictional Modern Day Japanese Countryside
  • Netorare Type A
  • Twin Handjob
Rating 6.5027 Users
Oinari-sama to Dadaama Kozukurikon ~Nuicha Dame! Takusan Dashite Oneesan no Shikyuu Ippai ni Shite Kudasai ne♪~
Oinari-sama to Dadaama Kozukurikon ~Nuicha Dame! Takusan Dashite Oneesan no Shikyuu Ippai ni Shite Kudasai ne♪~
10%
Tags
  • Kitsune Heroine
  • Goddess Heroine
  • Pregnancy Good Ending
  • Single Ending
  • Under the Same Roof
Rating 6.0953 Users
Hara ☆ Para!! ~Swan Nakadashi Paradise~
Hara ☆ Para!! ~Swan Nakadashi Paradise~
10%
Tags
  • Confinement in a Simulated Reality
  • Unnamed Protagonist
  • Half-demon Heroine
  • Crossover
  • Vampire Heroine
Rating 6.00118 Users
Koi Shiyo?
Koi Shiyo?
10%
Tags
  • Foolish Parent Support Character
  • Androphobic Heroine
  • Student Council Member Heroine
  • Perverted Friend
  • Student-Teacher Romance
Rating 7.4444 Users

Iinazuke wa Imouto-sama! has not appeared in our Steam sample enough to calculate it's similar novels... sorry!
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Tags (48 total)

NameScoreImportanceWeight
Sudden Girlfriend Appearance3.002.718.13
Protagonist's Younger Sister as a Heroine3.001.875.61
Protagonist's Full Sister as a Heroine3.001.865.58
Protagonist's Fiancee as a Heroine2.252.485.57
Imouto-type Heroine3.001.755.24
Harem Ending with Theme2.002.585.15
Non-blood-related Brother/Sister Incest2.801.764.94
Protagonist's Non-blood-related Sister as a Heroine2.751.754.81
Comedic Love Triangle2.002.384.76
Blood-related Brother/Sister Incest3.001.484.45
Airhead Heroine2.251.784.01
Non-twin Heroine Sisters2.002.004.00
Tribadism on Penis2.001.873.73
Soapy Massage2.001.843.69
Heroine with Visible Panties1.752.103.67
Few Choices2.751.333.65
Threesome Ending2.001.743.48
Twin Boobjob2.001.683.36
Unlockable Harem Ending1.751.883.28
Brocon Heroine2.001.613.21
Side Portraits2.501.162.89
Harem Ending2.001.402.81
Tsundere Heroine2.001.402.80
Only Virgin Heroines2.501.082.70
Reverse Cowgirl2.001.332.66
Twin Blowjob2.001.292.57
Female Ejaculation2.001.272.55
Under the Same Roof2.001.272.54
Bathroom Sex2.001.192.37
Unlockable Choices1.251.752.19
Defloration During Common Route1.002.192.19
Sixty-nine2.001.072.14
Standing Sex2.001.052.11
Only Protagonist's Sisters as Heroine(s)1.001.991.99
Missionary Position2.000.941.88
Unlockable Routes1.251.491.86
Cunnilingus2.000.931.86
Group Sex of One Male and Several Females2.000.921.83
Nukige2.670.651.74
Cowgirl2.000.841.67
Small Breast Sizes Heroine (Non-Loli)0.802.041.63
Doggy Style2.000.801.61
Defloration2.000.761.52
Naked Sprites1.001.051.05
High School Student Heroine1.000.850.85
Heroine with Big Breasts1.000.840.84
Male Protagonist2.330.300.70
ADV2.000.140.29

Traits (80 total)

NameCharactersImportanceWeight
Bodysponge Engages in (Sexual)22.382.62
Domestic Partner Role22.092.29
Tribadism on Penis Engages in (Sexual)22.082.29
Brother Complex Personality22.062.26
Naked Clothes21.952.15
Reverse Spitroast Subject of (Sexual)21.842.02
Bodysponge Subject of (Sexual)12.892.00
Tribadism on Penis Subject of (Sexual)12.861.98
Desu Personality12.781.93
Pajamas Clothes21.751.92
Step Brother Role12.731.90
Reverse Spitroast Engages in (Sexual)12.591.80
Middle Sister Role12.511.74
Baby-doll Clothes12.441.69
Step Sister Role12.431.69
Group Sex Engages in (Sexual)21.511.66
Student Council Member Role12.371.64
Incest Engages in (Sexual)21.471.61
Mirror Sex Engages in (Sexual)12.301.60
Twin Blowjob Engages in (Sexual)21.451.59
Third Person Personality12.121.47
Ringlet Hair12.001.38
Sex in Public Places Engages in (Sexual)21.261.38
Sixty-nine Engages in (Sexual)21.261.38
Betrothed Role11.981.37
Full Brother Role11.951.35
Over The Knee Socks Clothes11.941.35
Clumsy Personality11.931.34
Airhead Personality11.921.33
Quickie Fix Engages in (Sexual)11.881.30
Tsundere Personality11.871.30
Boobjob Subject of (Sexual)11.861.29
Hair Flower Clothes11.771.23
Handjob Subject of (Sexual)11.751.21
Deredere Personality11.741.21
Panties Clothes11.711.19
High School Student Role30.851.18
Virgin Sex Engages in (Sexual)30.851.18
Naive Personality11.691.17
Garnet Eyes11.661.15
Teasing Subject of11.651.14
Full Sister Role11.561.08
Sex in Water Engages in (Sexual)11.561.08
Cunnilingus Engages in (Sexual)11.551.08
Sidehair Hair20.981.07
Cowgirl Subject of (Sexual)20.951.05
Sailor School Uniform Clothes11.481.02
Headband Clothes11.451.01
Cooking Engages in11.420.98
Bathroom Sex Engages in (Sexual)11.390.96
Tsurime Eyes11.380.96
Wavy Hair11.360.94
Pink Hair11.330.92
Ahoge Hair11.320.92
Teen Body30.620.86
School Uniform Clothes20.750.83
Blue Hair11.190.83
Ribbon Hair Tie Clothes11.190.83
Standing Sex Subject of (Sexual)11.180.81
Group Sex of One Male and Several Females Engages in (Sexual)11.170.81
Cunnilingus Subject of (Sexual)11.160.81
Handjob Engages in (Sexual)11.160.80
Outdoor Sex Engages in (Sexual)11.160.80
Big Breasts Body11.130.78
Twin Tails Hair11.130.78
Missionary Subject of (Sexual)11.120.77
Necktie Clothes11.120.77
Tareme Eyes11.110.77
Quickie Fix Subject of (Sexual)11.080.75
Boobjob Engages in (Sexual)11.070.74
Miniskirt Clothes11.060.74
Sitting Sex Subject of (Sexual)11.060.74
Parted to Side Hair11.050.73
Violet Eyes11.050.72
Spiky Bangs Hair11.000.69
Shoulder-length Hair10.920.64
Slim Body20.580.63
Waist Length+ Hair10.810.56
Pale Body20.370.40
10.000.00