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Summary

This is the second title in feng’s low-price Seiiki series, focusing on younger sister Yukana Nase. When Youhei was small, he used to visit Akiba often. Even though it was for his younger sister Yukana, he soon got hooked on game centres and that’s how he became friends with his ojou-sama classmate Fuyuka. One day, Fuyuka gifted Yukana with a Christmas trip and the siblings enjoyed their time alone together like a couple. Looking at his younger sister, he realized that still hasn’t saved her from that time. “You won’t let your younger sister take your virginity even though you’re into Akiba stuff… I hate you, onii-chan!” [From Hau~ Omochikaeri!]

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
Raspberry Cube
Raspberry Cube
NAN%
Tags
  • Short Common Route
  • Petplay
  • Anal Plug Tail
  • Varying Ending Songs
  • Heroine with a Fang
Rating 7.27189 Users
Koiyasumi ~Yuudachi ni Nureta Osananajimi~
Koiyasumi ~Yuudachi ni Nureta Osananajimi~
NAN%
Tags
  • Countryside
  • Rain
  • Grandmother Support Character
  • Mischievous Heroine
  • Deredere Heroine
Rating 6.8797 Users
Kiss kara Hajimeru Egoism
Kiss kara Hajimeru Egoism
NAN%
Tags
  • Robot Heroine
  • Sex Under the Necessity
  • Parting Ending
  • Tsundere Heroine
  • Slice of Life Comedy
Rating 7.1479 Users
Tamayura Mirai
Tamayura Mirai
NAN%
Tags
  • Sexually Oblivious Heroine
  • Short Heroine
  • Youkai Heroine
  • Episodic Story
  • Protagonist's Older Sister as a Heroine
Rating 7.43374 Users
Loca Love - Jinja x Senpai
Loca Love - Jinja x Senpai
NAN%
Tags
  • Pillow Talk
  • Shinto Shrine
  • Pure Love Story
  • Ear-Cleaning
  • Unlockable Concept Art
Rating 6.72308 Users
Ama Koi Syrups ~Hajirau Koigokoro de Shitaku Naru Amagami-sama no Koi Matsuri~
Ama Koi Syrups ~Hajirau Koigokoro de Shitaku Naru Amagami-sama no Koi Matsuri~
NAN%
Tags
  • Family Life Comedy
  • Transfer Student Heroine
  • Protagonist's Blood-related Sister as a Heroine
  • Foreigner Heroine
  • Under the Same Roof
Rating 7.1865 Users
Uchi no Kanojo
Uchi no Kanojo
NAN%
Tags
  • Salaryman Protagonist
  • Backlog Jump
  • Ejaculation Forewarner
  • Deredere Heroine
  • Slice of Life
Rating 6.74270 Users
Kakenuke★Seishun Sparking!
Kakenuke★Seishun Sparking!
NAN%
Tags
  • Back Skip Function
  • System Time Events
  • Voice Saving
  • Festival
  • Student Club Member Heroine
Rating 7.59303 Users
Uchi no Koibito
Uchi no Koibito
NAN%
Tags
  • Threesome
  • Musician Heroine
  • Siscon Protagonist
  • Unlockable Epilogue
  • Twin Handjob
Rating 7.30187 Users
Aikagi
Aikagi
NAN%
Tags
  • Pillow Talk
  • Pure Love Story
  • Ejaculation Forewarner
  • Secret Romance
  • Slice of Life
Rating 6.65385 Users
DraPri Guu-ta-life 3
DraPri Guu-ta-life 3
NAN%
Tags
  • NEET Protagonist
  • Airhead Protagonist
  • Royal Heroine
  • Dragon Heroine
  • Comedic Love Triangle
Rating 7.27147 Users
Nekogami-sama to, Nanatsuboshi -Imouto no Ane-
Nekogami-sama to, Nanatsuboshi -Imouto no Ane-
NAN%
Tags
  • Protagonist's Half-sister as a Heroine
  • Protagonist's Younger Sister as a Heroine
  • Brother/Sister Romance
  • Blood-related Brother/Sister Incest
  • Forbidden Love
Rating 6.73222 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
Yakimochi Stream
Yakimochi Stream
NAN%
Tags
  • Hikikomori Heroine
  • Jealousy
  • Painter Heroine
  • Nude Filter
  • Protagonist's Rival as a Heroine
Rating 7.18145 Users
Ouchi ni Kaeru made ga Mashimaro Desu
Ouchi ni Kaeru made ga Mashimaro Desu
NAN%
Tags
  • Baker Heroine
  • Cook Heroine
  • Varying Ending Songs
  • Bookworm Heroine
  • Slice of Life Comedy
Rating 7.41806 Users
Boku to Joi no Shinsatsu Nisshi
Boku to Joi no Shinsatsu Nisshi
NAN%
Tags
  • Sadist Heroine
  • Medical Doctor Heroine
  • Hospital
  • Children Ending
  • Medical Doctor Protagonist
Rating 6.87140 Users
Shugaten! -sugarfull tempering-
Shugaten! -sugarfull tempering-
NAN%
Tags
  • Baker Protagonist
  • Cafe
  • Sex Scene Recollection
  • Waitress Heroine
  • Amnesiac Protagonist
Rating 7.35259 Users
Boku to Nurse no Kenshuu Nisshi
Boku to Nurse no Kenshuu Nisshi
NAN%
Tags
  • Highly Animated Sprites
  • Nurse Heroine
  • Ear-Cleaning
  • Medical Doctor Protagonist
  • Hospital
Rating 6.76264 Users
Aikagi ~After Days~
Aikagi ~After Days~
NAN%
Tags
  • Protagonist's Girlfriend as a Heroine
  • Summer
  • Slice of Life
  • Modern Day Japan
  • Protagonist in Relationship
Rating 7.13117 Users
Amatsutsumi
Amatsutsumi
NAN%
Tags
  • Ladder Structure
  • Defloration During Common Route
  • Protagonist's Fiancee as a Heroine
  • Food Discussions
  • Backlog Jump
Rating 7.771,235 Users
PRIMAL×HEARTS2
PRIMAL×HEARTS2
NAN%
Tags
  • Choosing Factions
  • Varying Ending Songs
  • Support Character with Ahoge
  • Student Council
  • Rimming Handjob
Rating 7.46689 Users
Sakura Hitohira Koi Moyou
Sakura Hitohira Koi Moyou
NAN%
Tags
  • Half-orphan Protagonist
  • Protagonist's Ex as a Heroine
  • Protagonist's Half-sister as a Heroine
  • Incest Romance
  • Nude Filter
Rating 7.09215 Users
Boku to Koi Suru Ponkotsu Akuma. Suggoi Ecchi!
Boku to Koi Suru Ponkotsu Akuma. Suggoi Ecchi!
NAN%
Tags
  • Mummy
  • Yuki-onna Heroine
  • Dragon Heroine
  • Heroine with Demon Blood
  • Long Sexual Scenes
Rating 7.19535 Users
Kanojo no Seiiki
Kanojo no Seiiki
52%
Tags
  • Brocon Support Character
  • Modern Day Akihabara
  • Reunion
  • Master and Servant
  • Late Branching Plot
Rating 6.43503 Users
Gakkou no Seiiki
Gakkou no Seiiki
50%
Tags
  • Protagonist's Older Sister as a Heroine
  • Protagonist's Full Sister as a Heroine
  • Tsukkomi Protagonist
  • Brocon Heroine
  • Heroine with Garter Belt
Rating 6.42209 Users
Uchi no Imouto
Uchi no Imouto
27%
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
Nekogami-sama to, Nanatsuboshi -Imouto no Ane-
Nekogami-sama to, Nanatsuboshi -Imouto no Ane-
24%
Tags
  • Protagonist's Half-sister as a Heroine
  • Protagonist's Younger Sister as a Heroine
  • Brother/Sister Romance
  • Blood-related Brother/Sister Incest
  • Forbidden Love
Rating 6.73222 Users
DraPri Guu-ta-life 3
DraPri Guu-ta-life 3
22%
Tags
  • NEET Protagonist
  • Airhead Protagonist
  • Royal Heroine
  • Dragon Heroine
  • Comedic Love Triangle
Rating 7.27147 Users
Uchi no Koibito
Uchi no Koibito
22%
Tags
  • Threesome
  • Musician Heroine
  • Siscon Protagonist
  • Unlockable Epilogue
  • Twin Handjob
Rating 7.30187 Users
Aikagi
Aikagi
21%
Tags
  • Pillow Talk
  • Pure Love Story
  • Ejaculation Forewarner
  • Secret Romance
  • Slice of Life
Rating 6.65385 Users
Uchi no Kanojo
Uchi no Kanojo
21%
Tags
  • Salaryman Protagonist
  • Backlog Jump
  • Ejaculation Forewarner
  • Deredere Heroine
  • Slice of Life
Rating 6.74270 Users
Kakenuke★Seishun Sparking!
Kakenuke★Seishun Sparking!
21%
Tags
  • Back Skip Function
  • System Time Events
  • Voice Saving
  • Festival
  • Student Club Member Heroine
Rating 7.59303 Users
Ouchi ni Kaeru made ga Mashimaro Desu
Ouchi ni Kaeru made ga Mashimaro Desu
21%
Tags
  • Baker Heroine
  • Cook Heroine
  • Varying Ending Songs
  • Bookworm Heroine
  • Slice of Life Comedy
Rating 7.41806 Users
Shugaten! -sugarfull tempering-
Shugaten! -sugarfull tempering-
21%
Tags
  • Baker Protagonist
  • Cafe
  • Sex Scene Recollection
  • Waitress Heroine
  • Amnesiac Protagonist
Rating 7.35259 Users
Aikagi ~After Days~
Aikagi ~After Days~
21%
Tags
  • Protagonist's Girlfriend as a Heroine
  • Summer
  • Slice of Life
  • Modern Day Japan
  • Protagonist in Relationship
Rating 7.13117 Users
PRIMAL×HEARTS2
PRIMAL×HEARTS2
20%
Tags
  • Choosing Factions
  • Varying Ending Songs
  • Support Character with Ahoge
  • Student Council
  • Rimming Handjob
Rating 7.46689 Users
Boku to Koi Suru Ponkotsu Akuma. Suggoi Ecchi!
Boku to Koi Suru Ponkotsu Akuma. Suggoi Ecchi!
20%
Tags
  • Mummy
  • Yuki-onna Heroine
  • Dragon Heroine
  • Heroine with Demon Blood
  • Long Sexual Scenes
Rating 7.19535 Users
Amairo Chocolata 2
Amairo Chocolata 2
20%
Tags
  • Co-worker Support Character
  • Waiting Staff Protagonist
  • Kemonomimi Support Character
  • Track Display
  • Reiwa Era
Rating 7.59190 Users
Making * Lovers: Geki Icha After Story
Making * Lovers: Geki Icha After Story
20%
Tags
  • Heroine with Pre-story Virginity Loss to the Protagonist
  • Announcer Heroine
  • Boke Protagonist
  • Hairstyle Option
  • Hero(ine) Selection
Rating 7.43639 Users
Kemonomichi ☆ Girlish Square
Kemonomichi ☆ Girlish Square
20%
Tags
  • Indecisive Protagonist
  • Mahou Shoujo Heroine
  • Unavoidable Harem Ending
  • Kemonomimi Heroine
  • Comedic Love Triangle
Rating 6.55143 Users
Maid-san no Iru Kurashi
Maid-san no Iru Kurashi
20%
Tags
  • Donkan Protagonist
  • Maid Heroine
  • No Common Sense Heroine
  • Sexual Fantasizing
  • Bleep Censor
Rating 7.09203 Users
Wagamama High Spec OC
Wagamama High Spec OC
20%
Tags
  • Mangaka Protagonist
  • Jump to Prior Choices
  • Long-distance Relationship
  • Jump to Next Choice
  • Mangaka Heroine
Rating 7.83263 Users
Honey*Honey*Honey!
Honey*Honey*Honey!
20%
Tags
  • Unlockable Sexual Content
  • Sex in Karaoke Box
  • Early Branching Plot
  • Varied Title Screens
  • Nude Filter
Rating 6.39301 Users
Neko-nin exHeart SPIN!
Neko-nin exHeart SPIN!
20%
Tags
  • Catgirl Heroine
  • Kunoichi Heroine
  • Protagonist's Younger Sister as a Heroine
  • Otaku Heroine
  • Brocon Heroine
Rating 7.2947 Users
Clover Day
Clover Day's
19%
Tags
  • Theater
  • Group of Friends
  • Love Triangle
  • Twin Sisters as Heroines
  • Childhood Promise
Rating 7.71887 Users
Himukai Chihiro wa Shigoto ga Tsuzukanai
Himukai Chihiro wa Shigoto ga Tsuzukanai
19%
Tags
  • Office
  • Pillow Talk
  • Reunion
  • Heroine with Beauty Mark
  • Track Display
Rating 7.35571 Users
Onigokko! Fandisc
Onigokko! Fandisc
19%
Tags
  • Phantom Thieves
  • Shinobi
  • Sacred Treasure
  • Slice of Life Comedy
  • Poor Heroine
Rating 7.21183 Users

Imouto no Seiiki 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 (34 total)

NameScoreImportanceWeight
Protagonist's Blood-related Sister as a Heroine3.001.955.84
Late Branching Plot3.001.905.71
Protagonist's Younger Sister as a Heroine3.001.875.61
Brocon Heroine3.001.614.82
Childhood Friend Support Character2.002.404.79
Blood-related Brother/Sister Incest3.001.484.45
Only Blood-related Heroines2.002.094.17
Heroine with Intake Hairstyle2.002.014.03
Few Choices3.001.333.98
Only Protagonist's Sisters as Heroine(s)2.001.993.98
Only Younger Heroines2.001.943.88
Modern Tsundere Heroine2.001.753.51
Only a Single Heroine3.001.023.05
Deepthroat2.001.523.04
Super Deformed CG's2.001.523.03
Spoons2.001.492.98
Anal Fingering2.001.482.95
Anilingus2.001.472.94
Sex in Water2.001.412.82
Perverted Heroine2.001.392.79
Female Ejaculation2.001.272.55
High School2.001.222.43
Sex with Protagonist Only2.001.132.26
Quickie Fix Position2.001.112.23
Only Virgin Heroines2.001.082.16
Standing Sex2.001.052.11
Sitting Sex2.001.052.11
Outdoor Sex2.000.991.99
Heroine with Big Breasts2.000.841.68
Cowgirl2.000.841.67
Defloration2.000.761.52
Male Protagonist3.000.300.90
ADV2.000.140.29
2.000.000.00

Traits (191 total)

NameCharactersImportanceWeight
Hazel Eyes32.042.82
Modern Tsundere Personality22.422.66
Bondage Sex Engages in (Sexual)22.282.50
Boobs on Glass Subject of (Sexual)22.152.37
Pissing Engages in (Sexual)41.472.36
Naked Ribbon Clothes13.262.26
Brother Complex Personality22.062.26
Ninth Grader Role13.182.21
Naizuri Subject of (Sexual)13.102.15
Incest Engages in (Sexual)31.472.03
Middle Brother Role12.922.02
Bodysponge Subject of (Sexual)12.892.00
Kemonomimi Hood Clothes12.882.00
Bun Hair21.771.94
Masturbation Engages in (Sexual)31.391.93
Bathroom Sex Engages in (Sexual)31.391.92
Sleep Sex Engages in (Sexual)12.761.92
Pet Collar Clothes12.721.89
Loafers Clothes21.711.88
Multicolored Eyes Eyes12.671.85
Ribbon Hair Wrap Clothes12.621.81
Fishnet Stockings Clothes12.621.81
Pantyjob Engages in (Sexual)12.601.80
Russian Role12.571.78
Naizuri Engages in (Sexual)12.571.78
Tsukkomi Role12.501.73
Nursing Handjob Engages in (Sexual)12.501.73
Boobjob Engages in (Sexual)41.071.72
Full Sister Role21.561.72
Sex in Water Engages in (Sexual)21.561.72
Homeroom Teacher Role12.451.70
Discreet Phone Sex Engages in (Sexual)12.441.69
Stylish Personality12.391.66
Bodysponge Engages in (Sexual)12.381.65
Standing Sex Subject of (Sexual)31.181.63
Deepthroat Subject of (Sexual)12.351.63
Sailor School Uniform Clothes21.481.62
Jitome Eyes12.341.62
Half-Japanese Role12.331.61
Outdoor Sex Engages in (Sexual)31.161.60
Handjob Engages in (Sexual)31.161.60
School Swimsuit Clothes12.311.60
Sex on Roof Engages in (Sexual)12.291.59
Anal Plug Tail Subject of (Sexual)12.291.59
Cooking Engages in21.421.56
High Heeled Boots Clothes12.241.55
V Bangs Hair21.411.55
Missionary Subject of (Sexual)31.121.55
Body Ribbon Clothes12.231.54
Hairpin Clothes21.401.54
Reverse Cowgirl Engages in (Sexual)12.221.54
Cowgirl Subject of (Sexual)40.951.53
Spoons Engages in (Sexual)12.211.53
Public Masturbation Engages in (Sexual)12.211.53
Torn Pantyhose (damaged) Clothes12.211.53
Virgin Sex Engages in (Sexual)50.851.52
Gym Shorts Clothes12.191.52
Lesbian Sex Engages in (Sexual)21.381.52
Seventh Posture Engages in (Sexual)12.191.52
Footjob Subject of (Sexual)12.181.51
Quickie Fix Subject of (Sexual)31.081.50
Female Ejaculation Engages in (Sexual)21.361.50
Vaginal Fingering Subject of (Sexual)31.081.50
Lazy Personality12.151.49
Sexual Sadism Engages in (Sexual)12.151.49
Off-The-Shoulder Shirt Clothes12.141.49
Petplay Subject of (Sexual)12.101.46
Old Type School Swimsuit Clothes12.091.45
Food Lover Personality12.091.45
Domestic Partner Role12.091.45
Short Body12.071.43
Corset Clothes12.061.43
Anal Fingering Engages in (Sexual)12.051.42
Otaku Personality12.051.42
Anilingus Subject of (Sexual)12.041.42
Shopping Engages in12.041.42
Transfer Student Role12.021.40
Butterfly Engages in (Sexual)12.021.40
Anal Beads Subject of (Sexual)12.011.39
Anilingus Engages in (Sexual)12.011.39
Beret Clothes11.991.38
Sex in Public Places Engages in (Sexual)21.261.38
Sixty-nine Engages in (Sexual)21.261.38
Childhood Friend Role21.261.38
Watashi Personality21.251.38
Full Brother Role11.951.35
Miko's Dress Clothes11.951.35
Over The Knee Socks Clothes11.941.35
One Piece Swimsuit Clothes11.921.33
Blazer School Uniform Clothes11.911.33
Atashi Personality11.911.32
Masturbation in front of an Audience Engages in (Sexual)11.901.32
Part-time Worker Role11.901.32
Eleventh Grader Role11.901.31
Anal Sex Subject of (Sexual)21.191.31
Quickie Fix Engages in (Sexual)11.881.30
Naked Apron Clothes11.881.30
Standing Sex Engages in (Sexual)11.871.29
Boobjob Subject of (Sexual)11.861.29
Sexual Blindfold Subject of (Sexual)11.851.29
Knee-high Boots Clothes11.831.27
Sitting Sex Engages in (Sexual)11.821.26
Younger Appearance Body11.821.26
Pretending Personality11.821.26
Waitstaff Role11.811.26
Evening Gloves Clothes11.811.26
Deepthroat Engages in (Sexual)11.801.25
Big Breasts Body21.131.24
Flirting Engages in11.791.24
Hair Flower Clothes11.771.23
Blowjob Engages in (Sexual)40.761.22
Anal Sex Engages in (Sexual)11.761.22
Handjob Subject of (Sexual)11.751.21
Pajamas Clothes11.751.21
Skirt Suit Clothes11.741.21
Missionary Engages in (Sexual)11.741.21
Mobile Phone Items11.741.20
Teal Eyes11.721.20
Footjob Engages in (Sexual)11.721.19
Cowgirl Engages in (Sexual)11.711.19
Anal Fingering Subject of (Sexual)11.711.19
Hoodie Clothes11.701.18
Stoic Personality11.701.18
Nipple Sucking Engages in (Sexual)11.701.18
Naive Personality11.691.17
Sitting Sex Subject of (Sexual)21.061.17
Intake Hair11.681.16
Spoons Subject of (Sexual)11.671.15
Collar Clothes11.661.15
Small Breasts Body11.661.15
Ribbon Hair Accessory Clothes11.661.15
Wealthy Role11.651.15
Teasing Subject of11.651.14
Reverse Cowgirl Subject of (Sexual)11.631.13
Pervert Personality11.631.13
Maid's Headdress Clothes11.621.13
Waist Length+ Hair30.811.12
Garter Belt Stockings Clothes11.621.12
Vaginal Fingering Engages in (Sexual)11.621.12
Drinking Engages in11.611.12
Sex in Classroom Engages in (Sexual)11.611.11
Spiky Bangs Hair21.001.10
Clothing with Ribbons Clothes11.581.09
Bondage Sex Subject of (Sexual)11.581.09
Kimono Clothes11.571.09
Older Sister Role11.561.08
Cunnilingus Engages in (Sexual)11.551.08
Sidehair Hair20.981.07
Hard Worker Personality11.541.07
Blowjob Subject of (Sexual)11.521.05
Maid's Dress Clothes11.511.05
Choker Clothes11.501.04
Necklace Clothes11.501.04
Slim Body50.581.03
Serious Personality11.491.03
French Kiss Engages in (Sexual)11.481.02
Blouse Clothes11.461.01
Seventh Posture Subject of (Sexual)11.461.01
Smart Personality11.461.01
Daughter Role11.451.01
Younger Sister Role11.441.00
Teasing Engages in11.441.00
Pantyhose Clothes11.420.99
Earrings Clothes11.420.98
Black Eyes11.420.98
Knee-high Socks Clothes11.380.96
Nipple Sucking Subject of (Sexual)11.380.96
Kid Body11.370.95
Wavy Hair11.360.94
Tominagi Subject of (Sexual)11.360.94
High School Student Role20.850.94
White Hair11.330.92
Black Hair20.800.88
Belt Clothes11.270.88
Ribbon Tie Clothes11.250.87
Teen Body30.620.86
Classmate Role11.230.85
Friendly Personality11.220.84
Ribbon Hair Tie Clothes11.190.83
Butterfly Subject of (Sexual)11.170.81
Twin Tails Hair11.130.78
Brown Hair20.680.75
Miniskirt Clothes11.060.74
Thigh-high Stockings Clothes11.040.72
Kind Personality11.030.71
Short Hair20.610.67
Straight Hair10.940.65
Pale Body40.370.59
Blue Eyes10.800.56
Young-adult Body10.760.53
10.000.00