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Summary

Yuta Yamauchi and Kei Higashide became a couple on a sunny day. The two started living together and lived in peace, but Yuta's sister and Kei's nemesis, Otoha Yamauchi, came over. When Otoha learns that his younger brother lives with Kei, she refuses to recognize the relationship between the two and comes up with certain conditions. Yuta and Kei struggle together to get Otoha's recognition. [From Wikipedia]

AneDeath. ~Ane-jini Kakugo no "Otouto-shibori" na Natsu ga Kuru!~
AneDeath. ~Ane-jini Kakugo no "Otouto-shibori" na Natsu ga Kuru!~
NAN%
Tags
  • Sex Scene Recollection
  • Non-twin Heroine Sisters
  • Foreskin Play
  • Drop-Out Protagonist
  • Protagonist with Phimosis
Rating 7.0359 Users
Paizuri Cheerleader VS Sakunyuu Ouendan!
Paizuri Cheerleader VS Sakunyuu Ouendan!
NAN%
Tags
  • Cheerleader Heroine
  • Student Club
  • Harem Ending
  • Heroine with a Fang
  • Non-blood-related Brother/Sister Incest
Rating 7.0137 Users
Natsuyo ni Modaeru Nananin no Sasoime
Natsuyo ni Modaeru Nananin no Sasoime
NAN%
Tags
  • Triple Boobjob
  • Triple Blowjob
  • Sex on a Beach
  • Twin Handjob
  • Single Buttjob
Rating 6.8329 Users
Kyonyuu Onsen Kozukuri no Yu ~Yama no Naka no Hitou de Deatta no wa Bijin Oyako Deshita~
Kyonyuu Onsen Kozukuri no Yu ~Yama no Naka no Hitou de Deatta no wa Bijin Oyako Deshita~
NAN%
Tags
  • Oyakodon Ending
  • Student Council
  • Onsen
  • Widow Heroine
  • Heroine with Kimono
Rating 6.3632 Users
Kuudere Makai Princess Sara to Kyuusei Haramase Life! ~Suki na dake Shikyuu ni Sosoide Ninshin Sasenasai~
Kuudere Makai Princess Sara to Kyuusei Haramase Life! ~Suki na dake Shikyuu ni Sosoide Ninshin Sasenasai~
NAN%
Tags
  • Heroine with Demon Blood
  • Demon Heroine
  • Domicile
  • Brief Branches Only
  • Oneesan-type Heroine
Rating 6.6825 Users
Chu Shite Agechau ~Oshikake Onee-san no Seikou Chiryou~
Chu Shite Agechau ~Oshikake Onee-san no Seikou Chiryou~
NAN%
Tags
  • Illness
  • Medical Doctor Heroine
  • Triple Blowjob
  • Group Sex of Several Females
  • Long Sexual Scenes
Rating 6.9439 Users
Yobai Suru Nananin no Harame 2
Yobai Suru Nananin no Harame 2
NAN%
Tags
  • Triple Boobjob
  • Medical Doctor Heroine
  • Triple Blowjob
  • Island
  • Twin Sisters as Heroines
Rating 7.2745 Users
Mamapuri!? ~Wagaya no Dousei Tsuushinbo~
Mamapuri!? ~Wagaya no Dousei Tsuushinbo~
NAN%
Tags
  • Short Sexual Scenes
  • Non-blood-related Mother/Son Incest
  • Protagonist's Non-blood-related Mother as a Heroine
  • Discreet Phone Sex
  • Classic Tsundere Heroine
Rating 6.5634 Users
3jigen Shoujo o Hogo Shimashita
3jigen Shoujo o Hogo Shimashita
NAN%
Tags
  • Family Life Comedy
  • Otaku Protagonist
  • Nympho Heroine
  • Modern Day
  • Blood-related Brother/Sister Incest
Rating 6.6533 Users
Amayakashitari Shinai zo! ~Chiisaku Natte Junjou Kachiki na Aoba Onee-chan ni Shikari Kawaigarareru Tsundere Kozukuri~
Amayakashitari Shinai zo! ~Chiisaku Natte Junjou Kachiki na Aoba Onee-chan ni Shikari Kawaigarareru Tsundere Kozukuri~
NAN%
Tags
  • Cosplay
  • Shota Protagonist
  • Straight Shotacon
  • Heroine with Swimsuits
  • Sex in Water
Rating 6.4822 Users
Toraba!
Toraba!
NAN%
Tags
  • Romancing a Family
  • Swimming Club
  • Class President Heroine
  • Foolish Friend
  • Oyakodon Ending
Rating 6.8524 Users
Tap~puri Ijitte Ageru♪ ~Chiisaku Natte Cool Beauty na Kikyou Onee-chan ni Shiborare Tsukusu Itazura Kozukuri~
Tap~puri Ijitte Ageru♪ ~Chiisaku Natte Cool Beauty na Kikyou Onee-chan ni Shiborare Tsukusu Itazura Kozukuri~
NAN%
Tags
  • Shota Protagonist
  • Straight Shotacon
  • Handjob
  • Anilingus
  • Impregnation
Rating 6.3821 Users
boin
boin
NAN%
Tags
  • Protagonist's Boss as a Heroine
  • Medical Doctor Heroine
  • Protagonist's Cousin as a Heroine
  • Heroine with Beauty Mark
  • Teacher Protagonist
Rating 7.4951 Users
Siskon
Siskon
NAN%
Tags
  • Brother/Sister Romance
  • Blood-related Brother/Sister Incest
  • Salaryman Protagonist
  • Childishly Violent Heroine
  • Childhood Promise
Rating 6.6029 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
Ip~pai Amaete ne♪ ~Chiisaku Natte Yasashii Kasumi Onee-chan ni Osewa Saretsukusu Iyasare Kozukuri~
Ip~pai Amaete ne♪ ~Chiisaku Natte Yasashii Kasumi Onee-chan ni Osewa Saretsukusu Iyasare Kozukuri~
NAN%
Tags
  • Shotacon Heroine
  • Shota Protagonist
  • Oneesan-type Heroine
  • Straight Shotacon
  • Naked Heroine with Apron
Rating 6.5921 Users
Aka-chan Hoshii na ~Kyou kara Hajimaru Love Love Ecchi~
Aka-chan Hoshii na ~Kyou kara Hajimaru Love Love Ecchi~
NAN%
Tags
  • Heroine with Baby Complex
  • Pure Love Story
  • Cousin Incest
  • Only Protagonist's Relatives as Heroine(s)
  • Protagonist's Wife as a Heroine
Rating 6.8221 Users
Onee-san ☆ Hara Mix
Onee-san ☆ Hara Mix
NAN%
Tags
  • Shinigami Heroine
  • Dormitory Manager Heroine
  • Sex Under the Necessity
  • Impregnation
  • Widow Heroine
Rating 6.7725 Users
Kirari☆Nangoku Komugiiro ~Shiofuki Paradise e Youkoso!~
Kirari☆Nangoku Komugiiro ~Shiofuki Paradise e Youkoso!~
NAN%
Tags
  • Group (4+) Boobjob
  • Island
  • Pantyjob
  • Heroine with Swimsuits
  • Sex on a Beach
Rating 7.4356 Users
Aneboku ~Onee-chan wa Bijin 3 Shimai~
Aneboku ~Onee-chan wa Bijin 3 Shimai~
NAN%
Tags
  • Brother/Sister Romance
  • Protagonist with Phimosis
  • Romancing a Family
  • Protagonist's Non-blood-related Sister as a Heroine
  • Single Hole Multiple Objects Insertion (obsolete)
Rating 7.1723 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 6.2842 Users
Ama Ane
Ama Ane
NAN%
Tags
  • Dormitory Manager Protagonist
  • Scary Protagonist
  • Homemaker Protagonist
  • Family Life Comedy
  • Rhythm Game
Rating 6.9038 Users
Korekara Anata o Ubau kara!!! -Yuuwaku ♥ Soudatsu ♥ Sisters-
Korekara Anata o Ubau kara!!! -Yuuwaku ♥ Soudatsu ♥ Sisters-
NAN%
Tags
  • School Nurse Heroine
  • All-boys School
  • Foreigner Heroine
  • Timid Heroine
  • Nursing Handjob
Rating 7.4166 Users
Milk Junkie 2
Milk Junkie 2
NAN%
Tags
  • Shimaidon Ending
  • Blood-related Sister/Sister Incest
  • Big Breast Sizes Heroine
  • Soapy Massage
  • Changeable Font
Rating 7.5924 Users
Nee ♥ Summer! ~Nee ♥ Sama!~
Nee ♥ Summer! ~Nee ♥ Sama!~
69%
Tags
  • Cousin Incest
  • Oneesan-type Heroine
  • Protagonist's Cousin as a Heroine
  • Only Protagonist's Relatives as Heroine(s)
  • Cousin Romance
Rating 6.8145 Users
Shindan no Kekka, Sore wa Koi no Yamai Desu
Shindan no Kekka, Sore wa Koi no Yamai Desu
38%
Tags
  • Medical Doctor Heroine
  • Genre Savvy Protagonist
  • Protagonist's Non-blood-related Sister as a Heroine
  • Nurse Heroine
  • Spring
Rating 6.6922 Users
Siskon
Siskon
35%
Tags
  • Brother/Sister Romance
  • Blood-related Brother/Sister Incest
  • Salaryman Protagonist
  • Childishly Violent Heroine
  • Childhood Promise
Rating 6.6029 Users
boin
boin
28%
Tags
  • Protagonist's Boss as a Heroine
  • Medical Doctor Heroine
  • Protagonist's Cousin as a Heroine
  • Heroine with Beauty Mark
  • Teacher Protagonist
Rating 7.4951 Users
Tap~puri Ijitte Ageru♪ ~Chiisaku Natte Cool Beauty na Kikyou Onee-chan ni Shiborare Tsukusu Itazura Kozukuri~
Tap~puri Ijitte Ageru♪ ~Chiisaku Natte Cool Beauty na Kikyou Onee-chan ni Shiborare Tsukusu Itazura Kozukuri~
28%
Tags
  • Shota Protagonist
  • Straight Shotacon
  • Handjob
  • Anilingus
  • Impregnation
Rating 6.3821 Users
Amayakashitari Shinai zo! ~Chiisaku Natte Junjou Kachiki na Aoba Onee-chan ni Shikari Kawaigarareru Tsundere Kozukuri~
Amayakashitari Shinai zo! ~Chiisaku Natte Junjou Kachiki na Aoba Onee-chan ni Shikari Kawaigarareru Tsundere Kozukuri~
28%
Tags
  • Cosplay
  • Shota Protagonist
  • Straight Shotacon
  • Heroine with Swimsuits
  • Sex in Water
Rating 6.4822 Users
Toraba!
Toraba!
25%
Tags
  • Romancing a Family
  • Swimming Club
  • Class President Heroine
  • Foolish Friend
  • Oyakodon Ending
Rating 6.8524 Users
Mamapuri!? ~Wagaya no Dousei Tsuushinbo~
Mamapuri!? ~Wagaya no Dousei Tsuushinbo~
25%
Tags
  • Short Sexual Scenes
  • Non-blood-related Mother/Son Incest
  • Protagonist's Non-blood-related Mother as a Heroine
  • Discreet Phone Sex
  • Classic Tsundere Heroine
Rating 6.5634 Users
3jigen Shoujo o Hogo Shimashita
3jigen Shoujo o Hogo Shimashita
24%
Tags
  • Family Life Comedy
  • Otaku Protagonist
  • Nympho Heroine
  • Modern Day
  • Blood-related Brother/Sister Incest
Rating 6.6533 Users
Ip~pai Amaete ne♪ ~Chiisaku Natte Yasashii Kasumi Onee-chan ni Osewa Saretsukusu Iyasare Kozukuri~
Ip~pai Amaete ne♪ ~Chiisaku Natte Yasashii Kasumi Onee-chan ni Osewa Saretsukusu Iyasare Kozukuri~
24%
Tags
  • Shotacon Heroine
  • Shota Protagonist
  • Oneesan-type Heroine
  • Straight Shotacon
  • Naked Heroine with Apron
Rating 6.5921 Users
Onee-san ☆ Hara Mix
Onee-san ☆ Hara Mix
22%
Tags
  • Shinigami Heroine
  • Dormitory Manager Heroine
  • Sex Under the Necessity
  • Impregnation
  • Widow Heroine
Rating 6.7725 Users
Aneboku ~Onee-chan wa Bijin 3 Shimai~
Aneboku ~Onee-chan wa Bijin 3 Shimai~
21%
Tags
  • Brother/Sister Romance
  • Protagonist with Phimosis
  • Romancing a Family
  • Protagonist's Non-blood-related Sister as a Heroine
  • Single Hole Multiple Objects Insertion (obsolete)
Rating 7.1723 Users
Ama Ane
Ama Ane
21%
Tags
  • Dormitory Manager Protagonist
  • Scary Protagonist
  • Homemaker Protagonist
  • Family Life Comedy
  • Rhythm Game
Rating 6.9038 Users
Milk Junkie 2
Milk Junkie 2
21%
Tags
  • Shimaidon Ending
  • Blood-related Sister/Sister Incest
  • Big Breast Sizes Heroine
  • Soapy Massage
  • Changeable Font
Rating 7.5924 Users
Oshirikko Venus 2
Oshirikko Venus 2
21%
Tags
  • Non-penetrative Sex
  • Big Ass Heroine
  • Perverted Protagonist
  • Twin Footjob
  • Sex on a Roof
Rating 7.2533 Users
Tsukiakari ni Modaeru Harame
Tsukiakari ni Modaeru Harame
20%
Tags
  • Painter Protagonist
  • Painter Heroine
  • Traditionalist Family
  • Poor Heroine
  • Protagonist's Ex as a Heroine
Rating 7.2645 Users
Jukuren Ganbou ~Himeta Omoi to Midara na Ai no Katachi~
Jukuren Ganbou ~Himeta Omoi to Midara na Ai no Katachi~
20%
Tags
  • Businesswoman Heroine
  • Multiple Credit Rolls
  • Twin Footjob
  • Pure Love Story
  • Sex at Work
Rating 6.9224 Users
Meguri Megureba Meguru Toki!?
Meguri Megureba Meguru Toki!?
20%
Tags
  • Youkai Heroine
  • Youkai
  • Heroine with Shorts
  • Ghost Heroine
  • Nekomimi Heroine
Rating 7.1721 Users
Sweetest Maman!
Sweetest Maman!
20%
Tags
  • Host Club Heroine
  • Landlady Heroine
  • Apartment Building
  • Widow Heroine
  • Heroine with Children
Rating 7.0229 Users
Trouble Home! ~Giri no Haha to Imouto wa Koigataki~
Trouble Home! ~Giri no Haha to Imouto wa Koigataki~
20%
Tags
  • Oyakodon Ending
  • Heroine with Ahoge
  • Non-blood-related Mother/Son Incest
  • Protagonist's Non-blood-related Mother as a Heroine
  • Non-blood-related Incest
Rating 6.9136 Users
Lucky Sukebe na Ore no Nichijou ~Bijin na Hahaoya to Miboujin ga Doukyo Shite Ore ni Sematte Kuru Ken~
Lucky Sukebe na Ore no Nichijou ~Bijin na Hahaoya to Miboujin ga Doukyo Shite Ore ni Sematte Kuru Ken~
19%
Tags
  • Protagonist's Blood-related Mother as a Heroine
  • Blood-related Mother/Son Incest
  • Widow Heroine
  • BDSM
  • Only Adult Heroines
Rating 6.6339 Users
Ikenai Kozukuri 4 ~Namaiki na Aneki ga Jitsu wa Ore no Semen ga Daisuki Datta!?~
Ikenai Kozukuri 4 ~Namaiki na Aneki ga Jitsu wa Ore no Semen ga Daisuki Datta!?~
19%
Tags
  • Rounin Protagonist
  • Brother/Sister Romance
  • Blood-related Brother/Sister Incest
  • Only Blood-related Heroines
  • Only Older Heroines
Rating 6.8149 Users
Kyonyuu Hitozuma Shimai wa Nakadashi Niku Benki ~Oi no Wakai Kyokon ni Soku Ochi Mesu Yorokobi de Netori Haramase Onedari~
Kyonyuu Hitozuma Shimai wa Nakadashi Niku Benki ~Oi no Wakai Kyokon ni Soku Ochi Mesu Yorokobi de Netori Haramase Onedari~
19%
Tags
  • Aunt/Nephew Incest
  • Protagonist's Aunt as a Heroine
  • Shimaidon Ending
  • Heroine with Slave Tattoo (BDSM)
  • Sexual Slavery (Consensual)
Rating 6.3525 Users

Nee ♥ Summer! 2 ~Nee ♥ Sama!~ has not appeared in our Steam sample enough to calculate it's similar novels... sorry!
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Tags (32 total)

NameScoreImportanceWeight
Oneesan-type Heroine3.001.835.48
Cousin Incest2.332.014.69
Incest Romance2.002.254.50
Summer2.671.674.45
Childishly Violent Heroine2.002.184.36
Pregnancy Ending2.002.004.00
Brother/Sister Romance2.001.933.85
Protagonist's Cousin as a Heroine2.001.883.77
Protagonist's Fiancee as a Heroine1.502.493.73
Brocon Heroine2.001.613.23
Date Display2.001.503.00
Blood-related Brother/Sister Incest2.001.492.97
Game Over2.001.492.97
Protagonist in Relationship2.001.452.89
Hetare Protagonist1.332.172.89
Fast Mini-games1.501.882.82
Bonus Side Stories1.671.632.72
Modern Day Japan2.001.322.65
Under the Same Roof2.001.272.54
Female Domination1.501.442.16
High Sexual Content2.001.052.10
Unlockable Routes1.331.491.98
Protagonist's Blood-related Sister as a Heroine1.001.941.94
Sex in Public Places1.501.091.63
Twin Blowjob1.001.291.29
Boobjob0.751.320.99
Footjob0.501.880.94
Group Sex of One Male and Several Females1.000.920.92
Incest0.332.110.70
Male Protagonist2.000.300.61
Big Breast Sizes Heroine0.331.310.43
ADV2.000.150.29

Traits (38 total)

NameCharactersImportanceWeight
Cousin Role31.872.60
Ane Act Role12.731.89
Capri Pants Clothes12.611.81
High Heeled Sandals Clothes12.291.58
Chinese Dress Clothes12.201.52
Nipple Sucking Subject of (Sexual)21.381.52
Boobs on Glass Subject of (Sexual)12.151.49
Brother Complex Personality12.061.43
Ringlet Hair12.001.38
Decorative Belt Clothes11.981.37
Mutual Masturbation Engages in (Sexual)11.941.34
Younger Brother Role11.901.32
Yukata Clothes11.851.28
Twin Boobjob Engages in (Sexual)11.771.23
Footjob Engages in (Sexual)11.721.19
Garnet Eyes11.661.15
Bracelet Clothes11.561.08
Older Sister Role11.561.08
Vest Clothes11.521.06
Pendant Necklace Clothes11.521.06
Cowgirl Subject of (Sexual)20.951.05
Incest Engages in (Sexual)11.471.02
Bikini Clothes11.461.01
Bathroom Sex Engages in (Sexual)11.390.96
Blowjob Engages in (Sexual)20.760.84
Outdoor Sex Engages in (Sexual)11.160.80
Missionary Subject of (Sexual)11.120.77
Quickie Fix Subject of (Sexual)11.080.75
Vaginal Fingering Subject of (Sexual)11.080.75
Boobjob Engages in (Sexual)11.070.74
Sitting Sex Subject of (Sexual)11.060.74
Sidehair Hair10.980.68
Virgin Sex Engages in (Sexual)10.850.59
Waist Length+ Hair10.810.56
Black Hair10.810.56
Blue Eyes10.800.56
Long Hair10.750.52
Brown Hair10.680.47