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Summary

Without asking for his opinion, the protagonist's father announces that he is going to remarry. As such, "Kousuke" has to suddenly live with his two new step sisters. Although the sisters have opposite personalities, they get along very well. Kana, the older sister, calls herself Kousuke's "onee-chan" despite being younger than him, and has a very sunny and mature disposition. Saya, the younger sister, hates men and does nothing but glare at Kousuke when he's around. While Kousuke is still confused about the sudden developments and change in his life, his father moves to a new house with his new wife only a month later. As a result, Kousuke has to take care of his sisters. Luckily, as the sisters get along well with each other, all Kousuke needs to do is do the housework and manage the money their parents send them. And so, their peaceful life together begins. A few weeks later, Kousuke wakes up in the same bed as Kana... [Translated from Getchu]

Garudoma -Joshiryou no Kanrinin- After
Garudoma -Joshiryou no Kanrinin- After
NAN%
Tags
  • Twin Boobjob
  • Legwear Footjob
  • Single Footjob
  • Group Sex of One Male and Several Females
  • High School Student Heroine
Rating 6.7129 Users
Yome no Imouto to H na Kankei ni Natte Yabai!?
Yome no Imouto to H na Kankei ni Natte Yabai!?
NAN%
Tags
  • Protagonist's Sister-in-Law as a Heroine
  • Salaryman Protagonist
  • In-law Incest
  • Used Condoms Exposition
  • Infidelity
Rating 6.9847 Users
Natsu Ecchi 2 ~Futago to Inaka no Natsuyasumi~
Natsu Ecchi 2 ~Futago to Inaka no Natsuyasumi~
NAN%
Tags
  • Blood-related Uncle/Niece Incest
  • Unnamed Protagonist
  • Protagonist's Niece as a Heroine
  • Oppai Loli Heroine
  • Sister/Sister Incest
Rating 5.4828 Users
Gachinko! Bitch Club - Sensation
Gachinko! Bitch Club - Sensation
NAN%
Tags
  • Skin Color Selection
  • Group (4+) Footjob
  • Promiscuous Heroine
  • Legwear Footjob
  • High Sexual Content
Rating 6.8240 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
Kamisama no Shippo ~Etogami-sama tachi no Ongaeshi~
Kamisama no Shippo ~Etogami-sama tachi no Ongaeshi~
NAN%
Tags
  • Kemonomimi
  • Mousegirl Heroine
  • Usamimi Heroine
  • Cowgirl Heroine
  • Kemonomimi Heroine
Rating 6.9946 Users
Yuunagi-sou no S-kyuu no Kanojo-tachi 2
Yuunagi-sou no S-kyuu no Kanojo-tachi 2
NAN%
Tags
  • Share House
  • Unavoidable Harem Ending
  • Seiyuu Heroine
  • Mirror Sex
  • Peace Sign Ahegao
Rating 7.3446 Users
Koi wa Mofumofu! Love Me Teddy
Koi wa Mofumofu! Love Me Teddy
NAN%
Tags
  • Shapeshifting
  • Yandere Heroine
  • Heroine with Tights
  • Otaku Heroine
  • Modern Tsundere Heroine
Rating 6.9624 Users
Densetsu no Yuusha to Saiyaku no Maou no Ren
Densetsu no Yuusha to Saiyaku no Maou no Ren'ai Jijou ~Yuusha wa Maou no Haha ni, Maou wa Yuusha no Mama ni Koi o Shita~
NAN%
Tags
  • Completion Status Indicator
  • Widow Heroine
  • Heroine with Children
  • Protagonist's Blood-related Mother as a Heroine
  • Only Non-Virgin Heroines
Rating 6.7122 Users
Kanojo no Imouto no Kyonyuu Yuuwaku ~Onii-chan, Watashi to Ii Koto... Shimasho?~
Kanojo no Imouto no Kyonyuu Yuuwaku ~Onii-chan, Watashi to Ii Koto... Shimasho?~
NAN%
Tags
  • Reverse Netorare
  • Tutor Protagonist
  • Protagonist in Relationship
  • Promiscuous Heroine
  • Netori
Rating 5.9223 Users
Mama Haha wa Musuko o Aishiteru! ~Okaa-san ni Amaete Ii no yo...Rinko Mama no Ecchi na Osewa Jijou~
Mama Haha wa Musuko o Aishiteru! ~Okaa-san ni Amaete Ii no yo...Rinko Mama no Ecchi na Osewa Jijou~
NAN%
Tags
  • Non-blood-related Mother/Son Incest
  • Widow Heroine
  • Protagonist's Non-blood-related Mother as a Heroine
  • Mother/Son Romance
  • Incest Romance
Rating 7.1946 Users
Shimojimo no Seikatsu o Tashinamu Tame no Tsudoi ~Muchi de Kouki na Ojou-sama wa Shomin no Seikatsu ni Kyoumi Shinshin~
Shimojimo no Seikatsu o Tashinamu Tame no Tsudoi ~Muchi de Kouki na Ojou-sama wa Shomin no Seikatsu ni Kyoumi Shinshin~
NAN%
Tags
  • Foolish Protagonist
  • Stockings
  • No Common Sense Heroine
  • Ojousama Heroine
  • Nursing Handjob
Rating 7.3021 Users
Gyaru Shimai ~Harem Time ga Tomaranai!~
Gyaru Shimai ~Harem Time ga Tomaranai!~
NAN%
Tags
  • Skin Color Selection
  • Shimaidon
  • Gyaru Heroine
  • Twin Boobjob
  • Non-twin Heroine Sisters
Rating 6.5227 Users
Saimin Datsujo 3 ~Subete ga Boku no Jiyuu ni Naru Sekai e Youkoso~ Kurihara Shizuru Hen
Saimin Datsujo 3 ~Subete ga Boku no Jiyuu ni Naru Sekai e Youkoso~ Kurihara Shizuru Hen
NAN%
Tags
  • Shimaidon
  • Heroine in Relationship with Other(s)
  • Erotic Mind Control
  • Blood-related Sister/Sister Incest
  • Teacher Heroine
Rating 6.9053 Users
Iegami Nyoubou ~Nanashi Nekomata wa KamiTuber~
Iegami Nyoubou ~Nanashi Nekomata wa KamiTuber~
NAN%
Tags
  • Lazy Heroine
  • Catgirl Heroine
  • Tailjob
  • Armpit Sex
  • Heroine with Kimono
Rating 6.8825 Users
God Sisters
God Sisters
NAN%
Tags
  • Only Protagonist's Sisters as Heroine(s)
  • Protagonist's Non-blood-related Sister as a Heroine
  • Background Moans
  • Ejaculation Forewarner
  • Heroine with a Fang
Rating 6.6936 Users
Seisokei Futago Idol no Ura Jijou ~Ore Dake ga Shiru Midara na Futari~
Seisokei Futago Idol no Ura Jijou ~Ore Dake ga Shiru Midara na Futari~
NAN%
Tags
  • Shimaidon with Twins
  • Twin Sisters as Heroines
  • Idol Heroine
  • Unavoidable Harem Ending
  • Protagonist's Childhood Friend as a Heroine
Rating 7.1034 Users
Oshino Ruka wa Iyashite Agetai
Oshino Ruka wa Iyashite Agetai
NAN%
Tags
  • Maid Heroine
  • Heroine with Wings
  • Unavoidable Harem Ending
  • Ejaculation Forewarner
  • Voiced Thoughts
Rating 7.2227 Users
Saimin Datsujo 4 ~Subete ga Boku no Jiyuu ni Naru Sekai e Youkoso~ Tennouji Karen Hen
Saimin Datsujo 4 ~Subete ga Boku no Jiyuu ni Naru Sekai e Youkoso~ Tennouji Karen Hen
NAN%
Tags
  • Erotic Mind Control
  • Idol Heroine
  • White Haired Heroine
  • Student Protagonist
  • Twin Tail Heroine
Rating 6.7841 Users
Suspicion - Giwaku no Sei -
Suspicion - Giwaku no Sei -
NAN%
Tags
  • Reverse Netorare
  • European Heroine
  • Protagonist's Girlfriend as a Heroine
  • Promiscuous Heroine
  • High School Student Protagonist
Rating 6.0922 Users
Teakamamire no Fukushuu
Teakamamire no Fukushuu
NAN%
Tags
  • Japanese Idols
  • Idol Heroine
  • Twin Blowjob
  • Heroine with Sexual Experience
  • Lesbian Sex
Rating 6.5423 Users
Haishinsha no Chouten ni Ore wa Tatsu! - Subete o Ubae! Mezase 100 Man Shasei!!
Haishinsha no Chouten ni Ore wa Tatsu! - Subete o Ubae! Mezase 100 Man Shasei!!
NAN%
Tags
  • Online Streamer Protagonist
  • Live Sexual Broadcast
  • Dancer Heroine
  • Haraguro Heroine
  • Social Networking Service
Rating 6.6422 Users
Ai Suru Tsuma wa, Kyou mo Hoka no Otoko ni Dakarete Iku ~ Taninbou de Midare Nikuyoku o Mitashite Iku Ore no Tsuma
Ai Suru Tsuma wa, Kyou mo Hoka no Otoko ni Dakarete Iku ~ Taninbou de Midare Nikuyoku o Mitashite Iku Ore no Tsuma
NAN%
Tags
  • Protagonist's Wife as a Heroine
  • Condoms
  • Heroine Having Sex with Others
  • Adult Heroine
  • Adult Protagonist
Rating 6.3820 Users
Ane Tsumami ~Miwaku no Osananajimi Onee-san Hitozuma to no Mecha Ero Dousei LoveLife~
Ane Tsumami ~Miwaku no Osananajimi Onee-san Hitozuma to no Mecha Ero Dousei LoveLife~
NAN%
Tags
  • Blood-related Aunt/Nephew Incest
  • Protagonist's Aunt as a Heroine
  • Sex on a Beach
  • Highly Animated Sprites
  • Lip Sync
Rating 7.5058 Users
Onii-chan Chou Suki 99 Jikan Ecchi Shiyo!
Onii-chan Chou Suki 99 Jikan Ecchi Shiyo!
40%
Tags
  • Only Protagonist's Sisters as Heroine(s)
  • Brother/Sister Romance
  • Unnamed Protagonist
  • Protagonist's Younger Sister as a Heroine
  • Shimaidon with Twins Ending
Rating 7.2140 Users
Low na Imouto ni Succubus ga Toritsuita node Tanetsuke Yoyuu deshita.
Low na Imouto ni Succubus ga Toritsuita node Tanetsuke Yoyuu deshita.
39%
Tags
  • Possession
  • Succubus Heroine
  • Unlockable Sexual Content
  • Protagonist's Younger Sister as a Heroine
  • Fake Choices
Rating 6.5623 Users
Saimin Datsujo 3 ~Subete ga Boku no Jiyuu ni Naru Sekai e Youkoso~ Kurihara Shizuru Hen
Saimin Datsujo 3 ~Subete ga Boku no Jiyuu ni Naru Sekai e Youkoso~ Kurihara Shizuru Hen
35%
Tags
  • Shimaidon
  • Heroine in Relationship with Other(s)
  • Erotic Mind Control
  • Blood-related Sister/Sister Incest
  • Teacher Heroine
Rating 6.9053 Users
Gyaru Shimai ~Harem Time ga Tomaranai!~
Gyaru Shimai ~Harem Time ga Tomaranai!~
35%
Tags
  • Skin Color Selection
  • Shimaidon
  • Gyaru Heroine
  • Twin Boobjob
  • Non-twin Heroine Sisters
Rating 6.5227 Users
Shimojimo no Seikatsu o Tashinamu Tame no Tsudoi ~Muchi de Kouki na Ojou-sama wa Shomin no Seikatsu ni Kyoumi Shinshin~
Shimojimo no Seikatsu o Tashinamu Tame no Tsudoi ~Muchi de Kouki na Ojou-sama wa Shomin no Seikatsu ni Kyoumi Shinshin~
34%
Tags
  • Foolish Protagonist
  • Stockings
  • No Common Sense Heroine
  • Ojousama Heroine
  • Nursing Handjob
Rating 7.3021 Users
Kanojo no Imouto no Kyonyuu Yuuwaku ~Onii-chan, Watashi to Ii Koto... Shimasho?~
Kanojo no Imouto no Kyonyuu Yuuwaku ~Onii-chan, Watashi to Ii Koto... Shimasho?~
33%
Tags
  • Reverse Netorare
  • Tutor Protagonist
  • Protagonist in Relationship
  • Promiscuous Heroine
  • Netori
Rating 5.9223 Users
Mama Haha wa Musuko o Aishiteru! ~Okaa-san ni Amaete Ii no yo...Rinko Mama no Ecchi na Osewa Jijou~
Mama Haha wa Musuko o Aishiteru! ~Okaa-san ni Amaete Ii no yo...Rinko Mama no Ecchi na Osewa Jijou~
33%
Tags
  • Non-blood-related Mother/Son Incest
  • Widow Heroine
  • Protagonist's Non-blood-related Mother as a Heroine
  • Mother/Son Romance
  • Incest Romance
Rating 7.1946 Users
Koi wa Mofumofu! Love Me Teddy
Koi wa Mofumofu! Love Me Teddy
33%
Tags
  • Shapeshifting
  • Yandere Heroine
  • Heroine with Tights
  • Otaku Heroine
  • Modern Tsundere Heroine
Rating 6.9624 Users
Densetsu no Yuusha to Saiyaku no Maou no Ren
Densetsu no Yuusha to Saiyaku no Maou no Ren'ai Jijou ~Yuusha wa Maou no Haha ni, Maou wa Yuusha no Mama ni Koi o Shita~
32%
Tags
  • Completion Status Indicator
  • Widow Heroine
  • Heroine with Children
  • Protagonist's Blood-related Mother as a Heroine
  • Only Non-Virgin Heroines
Rating 6.7122 Users
God Sisters
God Sisters
31%
Tags
  • Only Protagonist's Sisters as Heroine(s)
  • Protagonist's Non-blood-related Sister as a Heroine
  • Background Moans
  • Ejaculation Forewarner
  • Heroine with a Fang
Rating 6.6936 Users
Oshino Ruka wa Iyashite Agetai
Oshino Ruka wa Iyashite Agetai
30%
Tags
  • Maid Heroine
  • Heroine with Wings
  • Unavoidable Harem Ending
  • Ejaculation Forewarner
  • Voiced Thoughts
Rating 7.2227 Users
Suspicion - Giwaku no Sei -
Suspicion - Giwaku no Sei -
30%
Tags
  • Reverse Netorare
  • European Heroine
  • Protagonist's Girlfriend as a Heroine
  • Promiscuous Heroine
  • High School Student Protagonist
Rating 6.0922 Users
Haishinsha no Chouten ni Ore wa Tatsu! - Subete o Ubae! Mezase 100 Man Shasei!!
Haishinsha no Chouten ni Ore wa Tatsu! - Subete o Ubae! Mezase 100 Man Shasei!!
29%
Tags
  • Online Streamer Protagonist
  • Live Sexual Broadcast
  • Dancer Heroine
  • Haraguro Heroine
  • Social Networking Service
Rating 6.6422 Users
Ane Tsumami ~Miwaku no Osananajimi Onee-san Hitozuma to no Mecha Ero Dousei LoveLife~
Ane Tsumami ~Miwaku no Osananajimi Onee-san Hitozuma to no Mecha Ero Dousei LoveLife~
29%
Tags
  • Blood-related Aunt/Nephew Incest
  • Protagonist's Aunt as a Heroine
  • Sex on a Beach
  • Highly Animated Sprites
  • Lip Sync
Rating 7.5058 Users
Aniyome Oyako
Aniyome Oyako
29%
Tags
  • Masturbation Involving Food
  • Romancing a Family
  • In-law Incest
  • Body Food
  • Protagonist's Sister-in-Law as a Heroine
Rating 6.4836 Users
Otouto-kun Chou Suki 99 Jikan Amaenasai!
Otouto-kun Chou Suki 99 Jikan Amaenasai!
29%
Tags
  • Only Blood-related Heroines
  • Nursing Handjob
  • Armpit Sex
  • Single Footjob
  • Heroine with Glasses
Rating 6.6920 Users
Teakamamire no Danshi
Teakamamire no Danshi
28%
Tags
  • Japanese Idols
  • Idol Protagonist
  • Voiced Thoughts
  • Idol Heroine
  • Love Hotel
Rating 6.7225 Users
Kazoku wa (Ore Igai) Succubus Deshita ~ Futari no Ane to Haha to no Seikatsu de Seieki o Shiboritora Remasu ~
Kazoku wa (Ore Igai) Succubus Deshita ~ Futari no Ane to Haha to no Seikatsu de Seieki o Shiboritora Remasu ~
28%
Tags
  • Succubus Heroine
  • Non-blood-related Mother/Son Incest
  • Protagonist's Non-blood-related Mother as a Heroine
  • Only Protagonist's Relatives as Heroine(s)
  • Non-blood-related Brother/Sister Incest
Rating 7.0430 Users
Imosapo! ~Genkin de Low na Kyonyuu Imouto ni, Oppai Momasete Moraimashita~
Imosapo! ~Genkin de Low na Kyonyuu Imouto ni, Oppai Momasete Moraimashita~
28%
Tags
  • Runaway Heroine
  • Slice of Life Comedy
  • Protagonist's Younger Sister as a Heroine
  • Protagonist's Full Sister as a Heroine
  • Clothed Boobjob
Rating 7.0932 Users
Ayakashi Yuukaku ~Karakuri Jochuu no Mukashigatari~
Ayakashi Yuukaku ~Karakuri Jochuu no Mukashigatari~
28%
Tags
  • Living Doll Heroine
  • Heroine with Kimono
  • Kinetic Novel
  • Only a Single Heroine
  • Sexual Content
Rating 6.4920 Users
Haitoku no Kyousei Tanetsuke ~ Ai Suru Tsuma no Naka ni Sosogikomareru Hoka no Otoko no Seieki
Haitoku no Kyousei Tanetsuke ~ Ai Suru Tsuma no Naka ni Sosogikomareru Hoka no Otoko no Seieki
28%
Tags
  • Naked Dogeza
  • Sex in Front of an Audience
  • Protagonist's Wife as a Heroine
  • Only Non-Virgin Heroines
  • Facesitting
Rating 6.3828 Users
Akogare no Seiso na Fuuki Iinchou to Gyaru Imouto no Rannyuu Namahame Live Haishin
Akogare no Seiso na Fuuki Iinchou to Gyaru Imouto no Rannyuu Namahame Live Haishin
28%
Tags
  • Anal Object Insertion
  • Shimaidon
  • Gyaru Heroine
  • Anal Sex
  • Single Blowjob
Rating 6.7423 Users
Koe ni Koi Shite, Koikogare!
Koe ni Koi Shite, Koikogare!
28%
Tags
  • Twin Handjob
  • Adult Breast Feeding
  • Brocon Heroine
  • Threesome
  • Butterfly
Rating 6.6835 Users
Yuuri to Marin wa Iyashite Agetai
Yuuri to Marin wa Iyashite Agetai
28%
Tags
  • Succubus Heroine
  • Ejaculation Forewarner
  • Harem Ending
  • Voiced Thoughts
  • Gyaru Heroine
Rating 7.0232 Users

Ore to Nakayoshi Shimai no Inma na Himitsu ~Imouto ni Shinu hodo Kiraware Nagara Ane to Sex Suru Kimyou Doukyo Seikatsu~ 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 (33 total)

NameScoreImportanceWeight
Blood-related Sister/Sister Incest2.002.134.26
Completion Status Indicator2.002.134.26
Shimaidon Ending2.002.134.26
Tribadism on Penis2.001.873.73
Sex in a Vehicle2.001.793.58
Naked Heroine with Apron2.001.663.33
Condoms2.001.653.31
Sexual Blindfold2.001.533.05
Spoons2.001.492.98
Background Moans2.001.442.87
Vaginal Masturbation2.001.362.72
Sounds of Copulation2.001.292.58
Twin Blowjob2.001.292.57
Vaginal Fingering2.001.252.50
Single Handjob2.001.242.49
Lesbian Sex2.001.152.30
Sex in Public Places2.001.092.17
Sixty-nine2.001.072.14
Sitting Sex2.001.052.11
Naked Sprites2.001.052.10
Adult Protagonist2.001.022.04
Gokkun1.001.931.93
Single Blowjob2.000.951.91
Missionary Position2.000.941.88
Cunnilingus2.000.931.86
Group Sex of One Male and Several Females2.000.921.83
Heroine with Big Breasts2.000.841.68
Cowgirl2.000.841.67
Doggy Style2.000.801.61
Multiple Endings2.000.671.34
Sexual Content2.000.631.26
Male Protagonist2.000.300.60
ADV2.000.140.29

Traits (56 total)

NameCharactersImportanceWeight
Non-blood-related Incest Engages in (Sexual)32.152.98
Step Sister Role22.432.67
Voyeurism Engages in (Sexual)22.142.35
Tribadism Engages in (Sexual)22.122.32
Domestic Partner Role22.092.29
Tribadism on Penis Engages in (Sexual)22.082.29
Polyamory Engages in22.082.28
Step Brother Role12.731.90
Turtleneck Tank Top Clothes12.701.87
Misandrist Personality12.671.85
Middle Sister Role12.511.74
Full Sister Role21.561.72
Violet Hair31.191.66
Sex in Front of an Audience Engages in (Sexual)21.501.65
Penis Growth Subject of12.331.62
Incest Engages in (Sexual)21.471.61
Intercrural Sex Subject of (Sexual)12.281.58
Balls Sucking Engages in (Sexual)12.251.56
Lesbian Sex Engages in (Sexual)21.381.52
Seduction Engages in12.171.51
Condom Sex Engages in (Sexual)12.141.49
Sex in Public Places Engages in (Sexual)21.261.38
Naked Apron Clothes11.881.30
Group Sex of One Male and Several Females Engages in (Sexual)21.171.29
Mature Personality11.811.26
Eye Covering Hair11.801.25
Hidden Eyes11.801.25
Cheerful Personality11.741.20
Older Brother Role11.731.20
Reserved Personality11.711.19
Group Sex of One Female and Several Males Engages in (Sexual)11.701.18
Doggy Style Engages in (Sexual)11.681.17
Vaginal Masturbation Engages in (Sexual)11.681.16
Spoons Subject of (Sexual)11.671.15
Vaginal Fingering Engages in (Sexual)11.621.12
Lactation Engages in11.591.10
University Student Role11.591.10
Ore Personality11.581.09
Cowgirl Subject of (Sexual)20.951.05
Younger Sister Role11.441.00
Blunt Bangs Hair11.400.97
Bathroom Sex Engages in (Sexual)11.390.96
Waist Length+ Hair20.810.89
Dress Clothes11.250.87
Blowjob Engages in (Sexual)20.760.84
Handjob Engages in (Sexual)11.160.80
Big Breasts Body11.130.78
Twin Tails Hair11.130.78
Vaginal Fingering Subject of (Sexual)11.080.75
Miniskirt Clothes11.060.74
Sitting Sex Subject of (Sexual)11.060.74
Straight Hair10.940.65
Doggy Style Subject of (Sexual)10.920.64
Virgin Sex Engages in (Sexual)10.850.59
Slim Body10.580.40
Pale Body10.370.26