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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!

Ore ni Kanojo ga Dekite kara Imouto-tachi no Yousu ga Okashii!?
Ore ni Kanojo ga Dekite kara Imouto-tachi no Yousu ga Okashii!?
NAN%
Tags
  • Reverse Netorare
  • Protagonist's Sister as a Heroine
  • Only Protagonist's Sisters as Heroine(s)
  • Only Younger Heroines
  • Brother/Sister Incest
Rating 6.8735 Users
Ririshiki Bushin Reiha to Amalove Nakadashi Seikatsu! ~Watashi to Ko o Nashitekure... Ongi ni wa Kono Karada de Seishin Seii Kotaeyou~
Ririshiki Bushin Reiha to Amalove Nakadashi Seikatsu! ~Watashi to Ko o Nashitekure... Ongi ni wa Kono Karada de Seishin Seii Kotaeyou~
NAN%
Tags
  • Sudden Girlfriend Appearance
  • Deities
  • Curse
  • Sex Under the Necessity
  • Goddess Heroine
Rating 6.4042 Users
Pure Marriage ~Akai Ito Monogatari - Sakura Hen~
Pure Marriage ~Akai Ito Monogatari - Sakura Hen~
NAN%
Tags
  • Protagonist's Wife as a Heroine
  • Childhood Friend Support Character
  • Protagonist's Full Sister as a Heroine
  • Wedding
  • Blood-related Brother/Sister Incest
Rating 6.6523 Users
Onii-chan!! Shasei no Kanri wa Imouto ni Makasete!!
Onii-chan!! Shasei no Kanri wa Imouto ni Makasete!!
NAN%
Tags
  • Full Chastity Belt
  • Quadruple+ Blowjob
  • Clothed Female Naked Male
  • Protagonist's Sister as a Heroine
  • Cosplay
Rating 7.0731 Users
Love La Bride
Love La Bride
NAN%
Tags
  • Ordered Choices
  • Blind Choices
  • Protagonist's Fiancee as a Heroine
  • Homemaker Protagonist
  • Butler Support Character
Rating 7.1576 Users
No! body knows ~Sono Karada ga Shitteiru~
No! body knows ~Sono Karada ga Shitteiru~
NAN%
Tags
  • Romancing a Family
  • Hikikomori Heroine
  • White Haired Heroine
  • Twin Sisters as Heroines
  • Voiced Thoughts
Rating 6.5123 Users
Uruwashi no Seimegami Cecil o Sukuu Nakadashi Shinkon Seikatsu! ~Amaete Ii kara... Anata no Kodane o Takusan Shikyuu ni Sosoide?~
Uruwashi no Seimegami Cecil o Sukuu Nakadashi Shinkon Seikatsu! ~Amaete Ii kara... Anata no Kodane o Takusan Shikyuu ni Sosoide?~
NAN%
Tags
  • Goddess Heroine
  • Heroine with Sport Bloomers
  • Cosplay
  • Single Ending
  • Linear Plot
Rating 6.4233 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
  • Brother/Sister Incest
  • Only Blood-related Heroines
  • Blood-related Brother/Sister Incest
  • Only Protagonist's Sisters as Heroine(s)
  • Only Younger Heroines
Rating 6.3826 Users
Namaiki!
Namaiki!
NAN%
Tags
  • Non-twin Heroine Sisters
  • Only Protagonist's Sisters as Heroine(s)
  • Siscon Protagonist
  • Brother/Sister Incest
  • Submissive Protagonist
Rating 6.7162 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 6.64385 Users
Miinasan, Kakkee Desu! -Love Icha Doukyo Seikatsu no Susume-
Miinasan, Kakkee Desu! -Love Icha Doukyo Seikatsu no Susume-
NAN%
Tags
  • Reverse Netorare
  • Defloration During Common Route
  • Protagonist's Girlfriend as a Heroine
  • Betrayal
  • Infidelity
Rating 6.8845 Users
Fudeoroshi Mama ~Afureru Hakudaku & Milk~
Fudeoroshi Mama ~Afureru Hakudaku & Milk~
NAN%
Tags
  • Obacon
  • Non-blood-related Mother/Son Incest
  • Protagonist's Non-blood-related Mother as a Heroine
  • Only Older Heroines
  • Widow Heroine
Rating 5.9422 Users
Hara Miko Shimai
Hara Miko Shimai
NAN%
Tags
  • Shinto Shrine
  • Exorcism
  • Miko Heroine
  • Floating Textbox
  • Unlockable Harem Ending
Rating 6.01121 Users
Wanko no Yomeiri ~Inu no Shippo e Youkoso!~
Wanko no Yomeiri ~Inu no Shippo e Youkoso!~
NAN%
Tags
  • Doggirl Heroine
  • Kemonomimi Heroine
  • Heroine with Kimono
  • Heroine with Spats
  • Shinto Shrine
Rating 6.5763 Users
Kyoudai Hiai ~Iya na no ni, Kanjichau~
Kyoudai Hiai ~Iya na no ni, Kanjichau~
NAN%
Tags
  • Twincest
  • Consensual Chikan
  • Correct Choice Indicator
  • Protagonist's Full Sister as a Heroine
  • Protagonist's Younger Sister as a Heroine
Rating 5.52329 Users
NekoMiko
NekoMiko
NAN%
Tags
  • Modern Day Akihabara
  • No "Keep Voice on Click" Option
  • Apartment Building
  • Catgirl Heroine
  • Only One Bad Ending
Rating 6.23448 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 6.4731 Users
Aka-chan Hoshii na ~Kyou kara Hajimaru Love Love Ecchi~
Aka-chan Hoshii na ~Kyou kara Hajimaru Love Love Ecchi~
NAN%
Tags
  • Pure Love Story
  • Heroine with Baby Complex
  • Cousin Incest
  • Only Protagonist's Relatives as Heroine(s)
  • Protagonist's Wife as a Heroine
Rating 6.9020 Users
Musuko ga Osewa ni Narimashite ~Miboujin Kanrinin-san to Kaa-san to~
Musuko ga Osewa ni Narimashite ~Miboujin Kanrinin-san to Kaa-san to~
NAN%
Tags
  • Mother/Son Incest
  • Only Adult Heroines
  • Masochist Heroine
  • Clothed Male Naked Female
  • Pregnancy Ending
Rating 6.5736 Users
Hara ☆ Para!! ~Swan Nakadashi Paradise~
Hara ☆ Para!! ~Swan Nakadashi Paradise~
NAN%
Tags
  • Confinement in a Simulated Reality
  • Unnamed Protagonist
  • Half-demon Heroine
  • Crossover
  • Vampire Heroine
Rating 6.03119 Users
Hinata Terrace ~We Don
Hinata Terrace ~We Don't Abandon You.~
NAN%
Tags
  • Popular Protagonist
  • Class President Heroine
  • School Dormitory
  • Orphan Protagonist
  • Imouto-type Heroine
Rating 6.9628 Users
Koi Shiyo?
Koi Shiyo?
NAN%
Tags
  • Foolish Parent Support Character
  • Androphobic Heroine
  • Student Council Member Heroine
  • Perverted Friend
  • Student-Teacher Romance
Rating 7.4744 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 5.58317 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 6.0653 Users
Natsu no Osananajimi to, Fuyu no Kanojo
Natsu no Osananajimi to, Fuyu no Kanojo
16%
Tags
  • Student-Teacher Romance
  • Siscon Protagonist
  • Cousin Incest
  • Half-Japanese Heroine
  • Foreigner Heroine
Rating 7.0828 Users
Mai Yome ~My Yome~
Mai Yome ~My Yome~
16%
Tags
  • Sex Involving Children
  • Only Younger Heroines
  • Only Protagonist's Sisters as Heroine(s)
  • Elementary School Student Heroine
  • Only Loli Heroines
Rating 5.6520 Users
Wanko no Yomeiri ~Inu no Shippo e Youkoso!~
Wanko no Yomeiri ~Inu no Shippo e Youkoso!~
15%
Tags
  • Doggirl Heroine
  • Kemonomimi Heroine
  • Heroine with Kimono
  • Heroine with Spats
  • Shinto Shrine
Rating 6.5763 Users
Hara Miko Shimai
Hara Miko Shimai
14%
Tags
  • Shinto Shrine
  • Exorcism
  • Miko Heroine
  • Floating Textbox
  • Unlockable Harem Ending
Rating 6.01121 Users
Fudeoroshi Mama ~Afureru Hakudaku & Milk~
Fudeoroshi Mama ~Afureru Hakudaku & Milk~
14%
Tags
  • Obacon
  • Non-blood-related Mother/Son Incest
  • Protagonist's Non-blood-related Mother as a Heroine
  • Only Older Heroines
  • Widow Heroine
Rating 5.9422 Users
Hara ☆ Kano!! ~Ano Ko to Lovelove Harabote Seikatsu~
Hara ☆ Kano!! ~Ano Ko to Lovelove Harabote Seikatsu~
14%
Tags
  • Mahjong as Story Element
  • Harem Ending with Theme
  • Homemaker Protagonist
  • Incest Romance
  • Mother/Son Incest
Rating 6.64385 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 6.8845 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
  • Brother/Sister Incest
  • Only Blood-related Heroines
  • Blood-related Brother/Sister Incest
  • Only Protagonist's Sisters as Heroine(s)
  • Only Younger Heroines
Rating 6.3826 Users
Namaiki!
Namaiki!
13%
Tags
  • Non-twin Heroine Sisters
  • Only Protagonist's Sisters as Heroine(s)
  • Siscon Protagonist
  • Brother/Sister Incest
  • Submissive Protagonist
Rating 6.7162 Users
NekoMiko
NekoMiko
13%
Tags
  • Modern Day Akihabara
  • No "Keep Voice on Click" Option
  • Apartment Building
  • Catgirl Heroine
  • Only One Bad Ending
Rating 6.23448 Users
Aka-chan Hoshii na ~Kyou kara Hajimaru Love Love Ecchi~
Aka-chan Hoshii na ~Kyou kara Hajimaru Love Love Ecchi~
13%
Tags
  • Pure Love Story
  • Heroine with Baby Complex
  • Cousin Incest
  • Only Protagonist's Relatives as Heroine(s)
  • Protagonist's Wife as a Heroine
Rating 6.9020 Users
Hara ☆ Para!! ~Swan Nakadashi Paradise~
Hara ☆ Para!! ~Swan Nakadashi Paradise~
13%
Tags
  • Confinement in a Simulated Reality
  • Unnamed Protagonist
  • Half-demon Heroine
  • Crossover
  • Vampire Heroine
Rating 6.03119 Users
Koi Shiyo?
Koi Shiyo?
12%
Tags
  • Foolish Parent Support Character
  • Androphobic Heroine
  • Student Council Member Heroine
  • Perverted Friend
  • Student-Teacher Romance
Rating 7.4744 Users
Imouto to Hokentaiiku
Imouto to Hokentaiiku
12%
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 6.0653 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 5.54127 Users
Aerial Life
Aerial Life
12%
Tags
  • Gaming
  • Virtual Reality
  • Gamer Heroine
  • Confinement in a Simulated Reality
  • Kinetic Novel
Rating 6.3120 Users
Oppai Café ~Oyako de Cos Chichi~
Oppai Café ~Oyako de Cos Chichi~
12%
Tags
  • Braless Heroine
  • Incest Romance
  • Only Blood-related Heroines
  • Forbidden Love
  • Heroine with Inverted Nipples
Rating 5.91259 Users
Kemomimi Harem Vacation ~Inaka de Nonbiri Mofumofu Kemonomimi Shoujo-tachi to Kozukuri Zanmai~
Kemomimi Harem Vacation ~Inaka de Nonbiri Mofumofu Kemonomimi Shoujo-tachi to Kozukuri Zanmai~
12%
Tags
  • Fictional Modern Day Japanese Countryside
  • Youkai Heroine
  • Youkai
  • Unavoidable Harem Ending
  • Inumimi Heroine
Rating 5.97277 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~
12%
Tags
  • Harem Ending with Theme
  • Family Life Comedy
  • Incest Romance
  • Non-twin Heroine Sisters
  • Siscon Protagonist
Rating 6.561,759 Users
Neko-nin exHeart
Neko-nin exHeart
12%
Tags
  • Interracial/interspecies Romance
  • Kunoichi Heroine
  • Catgirl Heroine
  • Shimaidon Ending
  • Brief Branches Only
Rating 6.39783 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♪~
12%
Tags
  • Kitsune Heroine
  • Goddess Heroine
  • Pregnancy Good Ending
  • Single Ending
  • Under the Same Roof
Rating 6.2252 Users
Hara ☆ Chuchu!! ~Kameba Ano Ko mo H na Tenshi~
Hara ☆ Chuchu!! ~Kameba Ano Ko mo H na Tenshi~
12%
Tags
  • Heroine with Visible Panties
  • Sex Under the Necessity
  • Protagonist's Full Sister as a Heroine
  • Highly Animated Sprites
  • Half-demon Heroine
Rating 6.84149 Users
Himegoto Masquerade ~Ojousama-tachi no Tawamure~
Himegoto Masquerade ~Ojousama-tachi no Tawamure~
11%
Tags
  • Trap Protagonist
  • Spring
  • All-girls School
  • Pantyjob
  • Simulation Game
Rating 6.7725 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!~
11%
Tags
  • Baker Protagonist
  • Comedic Love Triangle
  • Clothed Boobjob
  • Changeable Clothes
  • Donkan Protagonist
Rating 6.54182 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 Appearance3.002.748.21
Protagonist's Full Sister as a Heroine3.001.915.74
Protagonist's Younger Sister as a Heroine3.001.905.70
Protagonist's Fiancee as a Heroine2.252.495.60
Imouto-type Heroine3.001.725.17
Harem Ending with Theme2.002.565.11
Non-blood-related Brother/Sister Incest2.801.754.91
Protagonist's Non-blood-related Sister as a Heroine2.751.744.78
Comedic Love Triangle2.002.364.72
Blood-related Brother/Sister Incest3.001.484.43
Non-twin Heroine Sisters2.002.054.11
Airhead Heroine2.251.773.99
Tribadism on Penis2.001.853.70
Few Choices2.751.343.68
Soapy Massage2.001.823.65
Heroine with Visible Panties1.752.073.63
Threesome Ending2.001.723.45
Twin Boobjob2.001.673.34
Unlockable Harem Ending1.751.863.25
Brocon Heroine2.001.603.21
Side Portraits2.501.162.91
Tsundere Heroine2.001.402.80
Harem Ending2.001.392.77
Only Virgin Heroines2.501.072.68
Reverse Cowgirl2.001.322.64
Twin Blowjob2.001.282.56
Female Ejaculation2.001.272.54
Under the Same Roof2.001.272.53
Bathroom Sex2.001.182.37
Unlockable Choices1.251.752.19
Defloration During Common Route1.002.172.17
Sixty-nine2.001.062.13
Standing Sex2.001.052.10
Only Protagonist's Sisters as Heroine(s)1.002.002.00
Missionary Position2.000.931.87
Unlockable Routes1.251.481.85
Cunnilingus2.000.921.85
Group Sex of One Male and Several Females2.000.901.80
Nukige2.670.641.72
Cowgirl2.000.831.66
Small Breast Sizes Heroine (Non-Loli)0.802.011.61
Doggy Style2.000.791.59
Defloration2.000.751.49
Naked Sprites1.001.051.05
Heroine with Big Breasts1.000.890.89
High School Student Heroine1.000.840.84
Male Protagonist2.330.300.70
ADV2.000.140.29

Traits (80 total)

NameCharactersImportanceWeight
Bodysponge Engages in (Sexual)22.382.62
Domestic Partner Role22.092.30
Tribadism on Penis Engages in (Sexual)22.082.29
Brother Complex Personality22.062.26
Naked Clothes21.952.14
Reverse Spitroast Subject of (Sexual)21.852.03
Bodysponge Subject of (Sexual)12.882.00
Tribadism on Penis Subject of (Sexual)12.861.98
Pajamas Clothes21.751.92
Desu Personality12.771.92
Step Brother Role12.731.90
Reverse Spitroast Engages in (Sexual)12.611.81
Middle Sister Role12.511.74
Step Sister Role12.441.69
Baby-doll Clothes12.431.68
Student Council Member Role12.361.64
Incest Engages in (Sexual)21.471.62
Mirror Sex Engages in (Sexual)12.301.59
Group Sex Engages in (Sexual)21.451.59
Twin Blowjob Engages in (Sexual)21.441.58
Third Person Personality12.111.46
Sex in Public Places Engages in (Sexual)21.261.39
Ringlet Hair11.991.38
Sixty-nine Engages in (Sexual)21.251.38
Betrothed Role11.981.37
Full Brother Role11.951.35
Clumsy Personality11.931.34
Over The Knee Socks Clothes11.931.34
Airhead Personality11.911.33
Quickie Fix Engages in (Sexual)11.891.31
Tsundere Personality11.871.30
Boobjob Subject of (Sexual)11.871.30
Hair Flower Clothes11.761.22
Handjob Subject of (Sexual)11.761.22
Deredere Personality11.751.21
Panties Clothes11.751.21
Naive Personality11.711.18
Virgin Sex Engages in (Sexual)30.841.17
High School Student Role30.841.16
Teasing Subject of11.681.16
Garnet Eyes11.651.14
Full Sister Role11.571.09
Cunnilingus Engages in (Sexual)11.561.08
Sex in Water Engages in (Sexual)11.561.08
Sidehair Hair20.981.07
Cowgirl Subject of (Sexual)20.951.05
Sailor School Uniform Clothes11.481.03
Headband Clothes11.441.00
Cooking Engages in11.410.98
Bathroom Sex Engages in (Sexual)11.390.97
Tsurime Eyes11.380.95
Wavy Hair11.360.94
Pink Hair11.320.92
Ahoge Hair11.310.91
Teen Body30.610.85
Group Sex of One Male and Several Females Engages in (Sexual)11.190.83
Blue Hair11.190.82
Big Breasts Body11.190.82
Ribbon Hair Tie Clothes11.180.82
Standing Sex Subject of (Sexual)11.180.82
Cunnilingus Subject of (Sexual)11.170.81
School Uniform Clothes20.740.81
Handjob Engages in (Sexual)11.160.80
Outdoor Sex Engages in (Sexual)11.160.80
Twin Tails Hair11.120.78
Missionary Subject of (Sexual)11.110.77
Necktie Clothes11.110.77
Tareme Eyes11.090.76
Quickie Fix Subject of (Sexual)11.080.75
Parted to Side Hair11.070.74
Miniskirt Clothes11.070.74
Boobjob Engages in (Sexual)11.060.74
Sitting Sex Subject of (Sexual)11.050.73
Violet Eyes11.040.72
Spiky Bangs Hair11.010.70
Shoulder-length Hair10.910.63
Slim Body20.570.63
Waist Length+ Hair10.800.55
Pale Body20.370.41
10.000.00