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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!]

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
Raspberry Cube
Raspberry Cube
NAN%
Tags
  • Short Common Route
  • Petplay
  • Anal Plug Tail
  • Varying Ending Songs
  • Heroine with a Fang
Rating 7.28190 Users
QUINTUPLE☆SPLASH
QUINTUPLE☆SPLASH
NAN%
Tags
  • Former All-girls School
  • Swimming Club
  • Brother/Sister Romance
  • Protagonist's Full Sister as a Heroine
  • Nude Filter
Rating 7.1145 Users
Ore no Sugata ga, Toumei ni!? Invisible to Suuki na Unmei
Ore no Sugata ga, Toumei ni!? Invisible to Suuki na Unmei
NAN%
Tags
  • Invisibility
  • Student Council Member Protagonist
  • Student Council
  • Athletics Festival
  • System Time Events
Rating 7.47205 Users
Trinoline: Genesis
Trinoline: Genesis
NAN%
Tags
  • Discipline Committee Member Heroine
  • Gentle Protagonist
  • Scientist Heroine
  • No Common Sense Heroine
  • Lots of Character Sprites
Rating 7.05109 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 7.1177 Users
Ren
Ren'ai, Karichaimashita - Emi & Hasumi Mini After Story
NAN%
Tags
  • Tsundere Protagonist
  • Restart from Chapter Index
  • Protagonist's Girlfriend as a Heroine
  • Pillow Talk
  • Protagonist's Sister as a Support Character
Rating 7.38126 Users
Uchi no Kanojo
Uchi no Kanojo
NAN%
Tags
  • Salaryman Protagonist
  • Backlog Jump
  • Ejaculation Forewarner
  • Deredere Heroine
  • Slice of Life
Rating 6.75269 Users
Shugaten! -sugarfull tempering-
Shugaten! -sugarfull tempering-
NAN%
Tags
  • Baker Protagonist
  • Sex Scene Recollection
  • Cafe
  • Waitress Heroine
  • Amnesiac Protagonist
Rating 7.36258 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 6.66381 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 7.32146 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
  • Forbidden Love
  • Blood-related Brother/Sister Incest
Rating 6.74220 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 6.79312 Users
DraPri Guu-ta-life LOVE + PLUS
DraPri Guu-ta-life LOVE + PLUS
NAN%
Tags
  • Dragon Heroine
  • Comedic Love Triangle
  • Poor Protagonist
  • Muted Obscenities
  • Unavoidable Harem Ending
Rating 6.43218 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 7.41799 Users
Ore no Cupid ga Ponkotsu Sugite Kowa~i.
Ore no Cupid ga Ponkotsu Sugite Kowa~i.
NAN%
Tags
  • Cupid Heroine
  • Destiny
  • Heroine with Expressive Ahoge
  • Voice Saving
  • Virtual Youtubers
Rating 7.17551 Users
PRIMAL×HEARTS2
PRIMAL×HEARTS2
NAN%
Tags
  • Choosing Factions
  • Varying Ending Songs
  • Support Character with Ahoge
  • Student Council
  • Rimming Handjob
Rating 7.46688 Users
Study § Steady
Study § Steady
NAN%
Tags
  • Protagonist with Voiced Changeable Names
  • Archer Heroine
  • Sexually Oblivious Heroine
  • Hairstyle Option
  • Artificial Intelligence
Rating 7.09720 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 7.12116 Users
QUALIA ~Yakusoku no Kiseki~
QUALIA ~Yakusoku no Kiseki~
NAN%
Tags
  • Scientist Protagonist
  • Artificial Intelligence
  • Time Jump
  • Robot Heroine
  • Nakige
Rating 7.24130 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
  • Angel Heroine
Rating 7.20534 Users
Otome * Domain
Otome * Domain
NAN%
Tags
  • Trap on Female
  • Free Camera
  • Trap Protagonist
  • Newspaper Club
  • Sprite Viewer
Rating 7.44960 Users
Kakenuke★Seishun Sparking!
Kakenuke★Seishun Sparking!
NAN%
Tags
  • Back Skip Function
  • Student Club President Protagonist
  • System Time Events
  • Festival
  • Skippable Gameplay
Rating 7.51269 Users
Kanojo no Seiiki
Kanojo no Seiiki
52%
Tags
  • Brocon Support Character
  • Modern Day Akihabara
  • Reunion
  • Master and Servant
  • Late Branching Plot
Rating 6.43500 Users
Gakkou no Seiiki
Gakkou no Seiiki
50%
Tags
  • Protagonist's Older Sister as a Heroine
  • Tsukkomi Protagonist
  • Brocon Heroine
  • Heroine with Garter Belt
  • Protagonist's Sister as a Heroine
Rating 6.43206 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 6.79312 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
  • Forbidden Love
  • Blood-related Brother/Sister Incest
Rating 6.74220 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 7.32146 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 6.66381 Users
Uchi no Kanojo
Uchi no Kanojo
21%
Tags
  • Salaryman Protagonist
  • Backlog Jump
  • Ejaculation Forewarner
  • Deredere Heroine
  • Slice of Life
Rating 6.75269 Users
Shugaten! -sugarfull tempering-
Shugaten! -sugarfull tempering-
21%
Tags
  • Baker Protagonist
  • Sex Scene Recollection
  • Cafe
  • Waitress Heroine
  • Amnesiac Protagonist
Rating 7.36258 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 7.41799 Users
PRIMAL×HEARTS2
PRIMAL×HEARTS2
20%
Tags
  • Choosing Factions
  • Varying Ending Songs
  • Support Character with Ahoge
  • Student Council
  • Rimming Handjob
Rating 7.46688 Users
Aikagi ~After Days~
Aikagi ~After Days~
20%
Tags
  • Protagonist's Girlfriend as a Heroine
  • Summer
  • Slice of Life
  • Modern Day Japan
  • Protagonist in Relationship
Rating 7.12116 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
  • Angel Heroine
Rating 7.20534 Users
Kakenuke★Seishun Sparking!
Kakenuke★Seishun Sparking!
20%
Tags
  • Back Skip Function
  • Student Club President Protagonist
  • System Time Events
  • Festival
  • Skippable Gameplay
Rating 7.51269 Users
Amairo Chocolata 2
Amairo Chocolata 2
20%
Tags
  • Co-worker Support Character
  • Waiting Staff Protagonist
  • Kemonomimi Support Character
  • Track Display
  • Interracial/interspecies Romance
Rating 7.61187 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 7.84262 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 7.11202 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 7.2646 Users
Kemonomichi ☆ Girlish Square
Kemonomichi ☆ Girlish Square
20%
Tags
  • Indecisive Protagonist
  • Mahou Shoujo Heroine
  • Unavoidable Harem Ending
  • Kemonomimi Heroine
  • Comedic Love Triangle
Rating 6.57142 Users
Clover Day
Clover Day's
19%
Tags
  • Theater
  • Group of Friends
  • Love Triangle
  • Twin Sisters as Heroines
  • Childhood Promise
Rating 7.72884 Users
Honey*Honey*Honey!
Honey*Honey*Honey!
19%
Tags
  • Unlockable Sexual Content
  • Sex in Karaoke Box
  • Early Branching Plot
  • Varied Title Screens
  • Nude Filter
Rating 6.40302 Users
Making * Lovers: Geki Icha After Story
Making * Lovers: Geki Icha After Story
19%
Tags
  • Heroine with Pre-story Virginity Loss to the Protagonist
  • Announcer Heroine
  • Boke Protagonist
  • Hairstyle Option
  • Hero(ine) Selection
Rating 7.43631 Users
Himukai Chihiro wa Shigoto ga Tsuzukanai
Himukai Chihiro wa Shigoto ga Tsuzukanai
19%
Tags
  • Office
  • Pillow Talk
  • Reunion
  • Track Display
  • Heroine with Beauty Mark
Rating 7.35569 Users
Onigokko! Fandisc
Onigokko! Fandisc
19%
Tags
  • Phantom Thieves
  • Shinobi
  • Sacred Treasure
  • Slice of Life Comedy
  • Poor Heroine
Rating 7.22182 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 Heroine3.001.945.83
Late Branching Plot3.001.915.72
Protagonist's Younger Sister as a Heroine3.001.885.63
Brocon Heroine3.001.614.84
Childhood Friend Support Character2.002.414.81
Blood-related Brother/Sister Incest3.001.494.46
Only Blood-related Heroines2.002.104.21
Heroine with Intake Hairstyle2.002.014.02
Few Choices3.001.344.01
Only Protagonist's Sisters as Heroine(s)2.001.993.98
Only Younger Heroines2.001.943.89
Modern Tsundere Heroine2.001.763.53
Only a Single Heroine3.001.023.06
Super Deformed CG's2.001.523.04
Deepthroat2.001.523.04
Spoons2.001.492.98
Anal Fingering2.001.482.95
Anilingus2.001.472.95
Sex in Water2.001.412.82
Perverted Heroine2.001.402.80
Female Ejaculation2.001.272.55
High School2.001.222.44
Sex with Protagonist Only2.001.132.26
Quickie Fix Position2.001.112.23
Only Virgin Heroines2.001.082.17
Standing Sex2.001.062.11
Sitting Sex2.001.062.11
Outdoor Sex2.001.001.99
Heroine with Big Breasts2.000.851.71
Cowgirl2.000.841.68
Defloration2.000.761.52
Male Protagonist3.000.300.91
ADV2.000.150.29
2.000.000.00

Traits (191 total)

NameCharactersImportanceWeight
Hazel Eyes32.042.83
Modern Tsundere Personality22.432.66
Bondage Sex Engages in (Sexual)22.272.50
Boobs on Glass Subject of (Sexual)22.152.36
Pissing Engages in (Sexual)41.462.36
Brother Complex Personality22.062.26
Naked Ribbon Clothes13.262.26
Ninth Grader Role13.182.20
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 Hair21.771.95
Masturbation Engages in (Sexual)31.391.92
Bathroom Sex Engages in (Sexual)31.391.92
Sleep Sex Engages in (Sexual)12.771.92
Pet Collar Clothes12.731.89
Loafers Clothes21.711.88
Multicolored Eyes Eyes12.681.86
Ribbon Hair Wrap Clothes12.621.82
Fishnet Stockings Clothes12.621.81
Pantyjob Engages in (Sexual)12.601.80
Russian Role12.571.78
Naizuri Engages in (Sexual)12.561.78
Nursing Handjob Engages in (Sexual)12.531.76
Tsukkomi Role12.501.73
Full Sister Role21.571.72
Boobjob Engages in (Sexual)41.071.72
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 Eyes12.331.62
Half-Japanese Role12.321.61
Handjob Engages in (Sexual)31.161.61
Outdoor Sex Engages in (Sexual)31.161.60
School Swimsuit Clothes12.301.60
Sex on Roof Engages in (Sexual)12.291.59
Anal Plug Tail Subject of (Sexual)12.291.58
High Heeled Boots Clothes12.251.56
Cooking Engages in21.421.56
V Bangs Hair21.411.55
Missionary Subject of (Sexual)31.121.55
Reverse Cowgirl Engages in (Sexual)12.221.54
Spoons Engages in (Sexual)12.221.54
Body Ribbon Clothes12.221.54
Gym Shorts Clothes12.221.54
Hairpin Clothes21.401.54
Cowgirl Subject of (Sexual)40.951.54
Public Masturbation Engages in (Sexual)12.211.53
Torn Pantyhose (damaged) Clothes12.211.53
Virgin Sex Engages in (Sexual)50.851.52
Seventh Posture Engages in (Sexual)12.191.52
Lesbian Sex Engages in (Sexual)21.381.51
Footjob Subject of (Sexual)12.181.51
Female Ejaculation Engages in (Sexual)21.371.50
Quickie Fix Subject of (Sexual)31.081.50
Vaginal Fingering Subject of (Sexual)31.081.50
Lazy Personality12.151.49
Off-The-Shoulder Shirt Clothes12.151.49
Sexual Sadism Engages in (Sexual)12.141.49
Petplay Subject of (Sexual)12.101.46
Old Type School Swimsuit Clothes12.091.45
Food Lover Personality12.091.45
Domestic Partner Role12.081.45
Short Body12.071.43
Corset Clothes12.061.43
Anal Fingering Engages in (Sexual)12.051.42
Anilingus Subject of (Sexual)12.051.42
Otaku Personality12.051.42
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
Sex in Public Places Engages in (Sexual)21.261.38
Sixty-nine Engages in (Sexual)21.261.38
Beret Clothes11.991.38
Watashi Personality21.261.38
Childhood Friend Role21.261.38
Full Brother Role11.951.35
Miko's Dress Clothes11.941.35
Over The Knee Socks Clothes11.941.35
One Piece Swimsuit Clothes11.921.33
Blazer School Uniform Clothes11.921.33
Atashi Personality11.911.32
Masturbation in front of an Audience Engages in (Sexual)11.901.32
Part-time Worker Role11.901.32
Eleventh Grader Role11.901.32
Anal Sex Subject of (Sexual)21.191.31
Quickie Fix Engages in (Sexual)11.881.31
Naked Apron Clothes11.871.30
Standing Sex Engages in (Sexual)11.871.30
Boobjob Subject of (Sexual)11.861.29
Sexual Blindfold Subject of (Sexual)11.851.28
Knee-high Boots Clothes11.831.27
Sitting Sex Engages in (Sexual)11.831.27
Pretending Personality11.821.26
Younger Appearance Body11.821.26
Waitstaff Role11.821.26
Big Breasts Body21.141.25
Evening Gloves Clothes11.811.25
Deepthroat Engages in (Sexual)11.801.25
Flirting Engages in11.801.25
Blowjob Engages in (Sexual)40.761.23
Hair Flower Clothes11.771.22
Anal Sex Engages in (Sexual)11.761.22
Handjob Subject of (Sexual)11.751.22
Pajamas Clothes11.751.21
Mobile Phone Items11.751.21
Skirt Suit Clothes11.741.21
Missionary Engages in (Sexual)11.741.21
Teal Eyes11.731.20
Footjob Engages in (Sexual)11.721.19
Cowgirl Engages in (Sexual)11.721.19
Anal Fingering Subject of (Sexual)11.711.19
Hoodie Clothes11.711.18
Nipple Sucking Engages in (Sexual)11.701.18
Stoic Personality11.701.18
Naive Personality11.691.17
Sitting Sex Subject of (Sexual)21.061.17
Intake Hair11.671.16
Spoons Subject of (Sexual)11.671.16
Small Breasts Body11.671.15
Collar Clothes11.661.15
Teasing Subject of11.661.15
Wealthy Role11.651.15
Ribbon Hair Accessory Clothes11.651.15
Reverse Cowgirl Subject of (Sexual)11.631.13
Pervert Personality11.631.13
Maid's Headdress Clothes11.631.13
Drinking Engages in11.621.12
Garter Belt Stockings Clothes11.621.12
Vaginal Fingering Engages in (Sexual)11.621.12
Waist Length+ Hair30.811.12
Sex in Classroom Engages in (Sexual)11.611.11
Spiky Bangs Hair21.001.10
Clothing with Ribbons Clothes11.571.09
Bondage Sex Subject of (Sexual)11.571.09
Kimono Clothes11.561.08
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)11.521.06
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)11.491.03
Blouse Clothes11.471.02
Seventh Posture Subject of (Sexual)11.461.01
Smart Personality11.461.01
Daughter Role11.461.01
Teasing Engages in11.451.00
Younger Sister Role11.441.00
Pantyhose Clothes11.420.99
Black Eyes11.420.99
Earrings Clothes11.420.99
Nipple Sucking Subject of (Sexual)11.380.96
Knee-high Socks Clothes11.380.96
Kid Body11.370.95
Wavy Hair11.360.94
Tominagi Subject of (Sexual)11.360.94
High School Student Role20.850.93
White Hair11.330.92
Black Hair20.810.88
Belt Clothes11.270.88
Ribbon Tie Clothes11.250.87
Teen Body30.620.86
Classmate Role11.230.85
Friendly Personality11.220.85
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 Hair10.950.66
Pale Body40.370.60
Blue Eyes10.800.56
Young-adult Body10.760.53
10.000.00