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Summary

Minase ── an isolated island due to its poor accessibility. However, the protagonist used to go there a lot in his childhood. After entering medical school, his parents were worried about him losing his edge due to the daily study schedule. They wanted to refresh him. The protagonist comes to the island again after being advised to visit his cousins during his summer vacation. He remembers his childhood with them, and being treated like a real family member. Suiren was beautiful when she was a child, and she was very kind and was like a real sister to him. Shion was like a tomboy little sister and used to follow him around. The protagonist wonders how the two of them have grown up. He can hear their voices afar from their house. Upon his arrival, he reunited with the two grown-up sisters. Suiren has become a gorgeous woman with a beautiful feminine body overflowing with tolerance and kindness. Shion, who has grown into a pretty girl, has a somewhat disgruntled look and only talks to the bare minimum necessary. An older sister who never changes and a younger sister who has changed. Feeling puzzled, as recommended by Suiren, who seems to have been waiting for the main character, the protagonist stay at their house for a while. How will he spend his time with them on the island under the summer sun? [From Getchu]

Sister Lesson
Sister Lesson
NAN%
Tags
  • System Time Events
  • Oneesan-type Heroine
  • Ear-Cleaning
  • Shimaidon
  • Homecoming
Rating 7.4960 Users
Shigokare ~Ecchi na Joshi Daisei to Doki x2 Love Lesson!!~
Shigokare ~Ecchi na Joshi Daisei to Doki x2 Love Lesson!!~
NAN%
Tags
  • Slice of Life Comedy
  • University Student Heroine
  • Charming Protagonist
  • Triple Boobjob
  • Only Good Endings
Rating 7.85159 Users
Sex Open World e Youkoso!
Sex Open World e Youkoso!
NAN%
Tags
  • Dancer Heroine
  • Heroine with Baby Complex
  • Protagonist from a Different World
  • Kitsune Heroine
  • Pregnancy
Rating 7.43106 Users
Baku Ane 2 ~Otouto, Ippai Shibocchau zo!~
Baku Ane 2 ~Otouto, Ippai Shibocchau zo!~
NAN%
Tags
  • Blood-related Cousin Incest
  • Protagonist's Older Sister as a Heroine
  • Non-penetrative Sex
  • Breast Smothering
  • Big Ass Heroine
Rating 7.81199 Users
H de Hajimaru Share House
H de Hajimaru Share House
NAN%
Tags
  • Share House
  • Discreet Sex
  • Homecoming
  • White Haired Protagonist
  • Gamer Heroine
Rating 6.9059 Users
Tonari no Sanshimai-san ga Totsuide Kimashita!?
Tonari no Sanshimai-san ga Totsuide Kimashita!?
NAN%
Tags
  • Shimaidon
  • Salaryman Protagonist
  • Non-twin Heroine Sisters
  • Healer Heroine
  • Heroine from a Different World
Rating 6.9424 Users
Shibora Renkare Keiyaku Hataraku Otona no Onee-san to H na Rental Kareshi Seikatsu
Shibora Renkare Keiyaku Hataraku Otona no Onee-san to H na Rental Kareshi Seikatsu
NAN%
Tags
  • Nurse Protagonist
  • Prostitute Protagonist
  • Twin Footjob
  • Sex Involving Prostitution
  • Pregnancy
Rating 7.0335 Users
Mama×Holic ~Miwaku no Mama to Ama Ama Kankei~
Mama×Holic ~Miwaku no Mama to Ama Ama Kankei~
NAN%
Tags
  • Yuki-onna Heroine
  • Oni Heroine
  • Non-human Heroine
  • Incest Roleplay
  • Heroine with Children
Rating 8.51342 Users
Re CATION ~Melty Healing~
Re CATION ~Melty Healing~
NAN%
Tags
  • Protagonist with Voiced Changeable Names
  • Dormitory Manager Heroine
  • Save Memo Function
  • Spring
  • Sexual Roleplay
Rating 7.90131 Users
Love Cafe ~Doutei na Ore demo, Kyonyuu Onna Senpai to Dousei Dekirutte Maji Desu ka?
Love Cafe ~Doutei na Ore demo, Kyonyuu Onna Senpai to Dousei Dekirutte Maji Desu ka?
NAN%
Tags
  • Poor Protagonist
  • Cafe
  • Bunnygirl Cosplay
  • Only Adult Heroines
  • Nursing Handjob
Rating 7.0022 Users
Ane wa Tsurezure Naru Mama ni ~Otouto no Ecchi na Osewa wa Ama-Ero JK Sisters ni Omakase!~
Ane wa Tsurezure Naru Mama ni ~Otouto no Ecchi na Osewa wa Ama-Ero JK Sisters ni Omakase!~
NAN%
Tags
  • Only Protagonist's Sisters as Heroine(s)
  • Nursing Handjob
  • Siscon Protagonist
  • Love Hotel
  • Legwear Footjob
Rating 6.7353 Users
Nee Nee Nee
Nee Nee Nee
NAN%
Tags
  • Oneesan-type Heroine
  • Straight Shotacon
  • Blood-related Cousin Incest
  • Only Older Heroines
  • Protagonist's Cousin as a Heroine
Rating 7.74143 Users
Nee-chan no Susume ~Onee-chan no Itazura Seiseikatsu~
Nee-chan no Susume ~Onee-chan no Itazura Seiseikatsu~
NAN%
Tags
  • Non-blood-related Mother/Son Incest
  • Twin Buttjob
  • Protagonist's Non-blood-related Mother as a Heroine
  • Charming Protagonist
  • Protagonist's Older Sister as a Heroine
Rating 7.77272 Users
Role player: Tororo Shimai no Nenmaku Portrait - Gurigucha LIVE!
Role player: Tororo Shimai no Nenmaku Portrait - Gurigucha LIVE!
NAN%
Tags
  • Voice Saving
  • Non-twin Heroine Sisters
  • Sexual Cosplay
  • Nude Filter
  • Shimaidon Ending
Rating 7.85130 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 6.8853 Users
Mamagoto ~Mama to Naisho no Ecchi Shimasho~
Mamagoto ~Mama to Naisho no Ecchi Shimasho~
NAN%
Tags
  • Mother/Son Romance
  • Voiced Default Name
  • Forbidden Love
  • Protagonist's Blood-related Mother as a Heroine
  • Secret Romance
Rating 8.16408 Users
Nyonin-jima -Yaru dake Kanrinin no Hame Pako Ijuu Seikatsu-
Nyonin-jima -Yaru dake Kanrinin no Hame Pako Ijuu Seikatsu-
NAN%
Tags
  • Oyakodon
  • Polyamory
  • Heroine's Mother as a Heroine
  • Has Window Transparency Setting
  • Masturbation with Object
Rating 7.29158 Users
Role player: Okayu Shimai no Nenmaku Portrait - Gurigucha LIVE!
Role player: Okayu Shimai no Nenmaku Portrait - Gurigucha LIVE!
NAN%
Tags
  • Resort
  • Mangaka Protagonist
  • Sexual Roleplay
  • Backlog Jump
  • Island
Rating 8.15274 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 7.2846 Users
Mesu Tsumami ~Sewayaki Toshiue Tsuma to Majime na Tsuntsun Tsuma to no Aiyoku Seikatsu~
Mesu Tsumami ~Sewayaki Toshiue Tsuma to Majime na Tsuntsun Tsuma to no Aiyoku Seikatsu~
NAN%
Tags
  • Heroine in Relationship with Other(s)
  • Netori
  • Sex at Work
  • Bunnygirl Cosplay
  • Married Heroine
Rating 7.5484 Users
Muchimuchi Dakara Mukumuku Shita ~Osananajimi to no Sugoshikata~
Muchimuchi Dakara Mukumuku Shita ~Osananajimi to no Sugoshikata~
NAN%
Tags
  • Share House
  • Only Younger Heroines
  • Wet and Messy
  • Sex with Sleepers
  • Masturbation with Object
Rating 7.3267 Users
Isekai Heat Massage ~Ken to Mahou no Sekai o H na Shiatsu Skill de Musou Seiatsu!!~
Isekai Heat Massage ~Ken to Mahou no Sekai o H na Shiatsu Skill de Musou Seiatsu!!~
NAN%
Tags
  • Erotic Massage
  • Massage Therapist Protagonist
  • Maou Heroine
  • Thief Heroine
  • Onahole
Rating 7.1943 Users
Otokano ~Otouto no Kanojo ga Bunkei de Tsuyome!?~
Otokano ~Otouto no Kanojo ga Bunkei de Tsuyome!?~
NAN%
Tags
  • Protagonist's Older Sister as a Heroine
  • Long Common Route
  • Protagonist's Girlfriend as a Heroine
  • Protagonist's Full Sister as a Heroine
  • Pragmatic Heroine
Rating 7.6072 Users
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
  • Heroine with Big Breasts
Rating 6.7229 Users
Onee-chan no Yuuwaku
Onee-chan no Yuuwaku
38%
Tags
  • Secret Romance
  • Protagonist's Older Sister as a Heroine
  • Forbidden Love
  • Protagonist's Full Sister as a Heroine
  • Dirty Talk
Rating 7.34670 Users
Aa Mama ni Naru! ~Anata o Omotte Afureru Oppai~
Aa Mama ni Naru! ~Anata o Omotte Afureru Oppai~
35%
Tags
  • Incest Roleplay
  • Paraphilic Infantilism
  • Salaryman Protagonist
  • Protagonist's Boss as a Heroine
  • Office Lady Heroine
Rating 7.36135 Users
Role player: Tororo Shimai no Nenmaku Portrait - Gurigucha LIVE!
Role player: Tororo Shimai no Nenmaku Portrait - Gurigucha LIVE!
33%
Tags
  • Voice Saving
  • Non-twin Heroine Sisters
  • Sexual Cosplay
  • Nude Filter
  • Shimaidon Ending
Rating 7.85130 Users
Nee-chan no Susume ~Onee-chan no Itazura Seiseikatsu~
Nee-chan no Susume ~Onee-chan no Itazura Seiseikatsu~
33%
Tags
  • Non-blood-related Mother/Son Incest
  • Twin Buttjob
  • Protagonist's Non-blood-related Mother as a Heroine
  • Charming Protagonist
  • Protagonist's Older Sister as a Heroine
Rating 7.77272 Users
Nee Nee Nee
Nee Nee Nee
32%
Tags
  • Oneesan-type Heroine
  • Straight Shotacon
  • Blood-related Cousin Incest
  • Only Older Heroines
  • Protagonist's Cousin as a Heroine
Rating 7.74143 Users
Love Cafe ~Doutei na Ore demo, Kyonyuu Onna Senpai to Dousei Dekirutte Maji Desu ka?
Love Cafe ~Doutei na Ore demo, Kyonyuu Onna Senpai to Dousei Dekirutte Maji Desu ka?
31%
Tags
  • Poor Protagonist
  • Cafe
  • Bunnygirl Cosplay
  • Only Adult Heroines
  • Nursing Handjob
Rating 7.0022 Users
Ane wa Tsurezure Naru Mama ni ~Otouto no Ecchi na Osewa wa Ama-Ero JK Sisters ni Omakase!~
Ane wa Tsurezure Naru Mama ni ~Otouto no Ecchi na Osewa wa Ama-Ero JK Sisters ni Omakase!~
30%
Tags
  • Only Protagonist's Sisters as Heroine(s)
  • Nursing Handjob
  • Siscon Protagonist
  • Love Hotel
  • Legwear Footjob
Rating 6.7353 Users
Mama×Holic ~Miwaku no Mama to Ama Ama Kankei~
Mama×Holic ~Miwaku no Mama to Ama Ama Kankei~
30%
Tags
  • Yuki-onna Heroine
  • Oni Heroine
  • Non-human Heroine
  • Incest Roleplay
  • Heroine with Children
Rating 8.51342 Users
Re CATION ~Melty Healing~
Re CATION ~Melty Healing~
30%
Tags
  • Protagonist with Voiced Changeable Names
  • Dormitory Manager Heroine
  • Save Memo Function
  • Spring
  • Sexual Roleplay
Rating 7.90131 Users
Mamagoto ~Mama to Naisho no Ecchi Shimasho~
Mamagoto ~Mama to Naisho no Ecchi Shimasho~
29%
Tags
  • Mother/Son Romance
  • Voiced Default Name
  • Forbidden Love
  • Protagonist's Blood-related Mother as a Heroine
  • Secret Romance
Rating 8.16408 Users
Role player: Okayu Shimai no Nenmaku Portrait - Gurigucha LIVE!
Role player: Okayu Shimai no Nenmaku Portrait - Gurigucha LIVE!
29%
Tags
  • Resort
  • Mangaka Protagonist
  • Sexual Roleplay
  • Backlog Jump
  • Island
Rating 8.15274 Users
Mesu Tsumami ~Sewayaki Toshiue Tsuma to Majime na Tsuntsun Tsuma to no Aiyoku Seikatsu~
Mesu Tsumami ~Sewayaki Toshiue Tsuma to Majime na Tsuntsun Tsuma to no Aiyoku Seikatsu~
29%
Tags
  • Heroine in Relationship with Other(s)
  • Netori
  • Sex at Work
  • Bunnygirl Cosplay
  • Married Heroine
Rating 7.5484 Users
Isekai Heat Massage ~Ken to Mahou no Sekai o H na Shiatsu Skill de Musou Seiatsu!!~
Isekai Heat Massage ~Ken to Mahou no Sekai o H na Shiatsu Skill de Musou Seiatsu!!~
28%
Tags
  • Erotic Massage
  • Massage Therapist Protagonist
  • Maou Heroine
  • Thief Heroine
  • Onahole
Rating 7.1943 Users
Garudoma -Joshiryou no Kanrinin- After
Garudoma -Joshiryou no Kanrinin- After
28%
Tags
  • Twin Boobjob
  • Legwear Footjob
  • Single Footjob
  • Group Sex of One Male and Several Females
  • Heroine with Big Breasts
Rating 6.7229 Users
Yuunagi-sou no S-kyuu no Kanojo-tachi
Yuunagi-sou no S-kyuu no Kanojo-tachi
28%
Tags
  • Share House
  • Dormitory Manager Heroine
  • Writer Heroine
  • Braless Heroine
  • Unavoidable Harem Ending
Rating 7.4188 Users
Bunny
Bunny's Mama Daikou Service
28%
Tags
  • Only Older Heroines
  • Incest Roleplay
  • Shota Protagonist
  • Shotacon Heroine
  • Netori
Rating 8.17144 Users
Homestay a la Mode
Homestay a la Mode
28%
Tags
  • Russian Heroine
  • American Heroine
  • Triple Boobjob
  • Pantyjob
  • Foreigner Heroine
Rating 7.5585 Users
Boku to Sensei no Nyuuin Seikatsu
Boku to Sensei no Nyuuin Seikatsu
27%
Tags
  • Medical Doctor Heroine
  • Pregnancy Good Ending
  • Wake-up Sex
  • Adult Breast Feeding
  • Reverse Missionary
Rating 7.5474 Users
Mama x Kano+ ~Oshiego no Okaa-san ga Ecchi na Sensei de, Musume mo Ecchi ni Nattara Dame Desu ka?~
Mama x Kano+ ~Oshiego no Okaa-san ga Ecchi na Sensei de, Musume mo Ecchi ni Nattara Dame Desu ka?~
27%
Tags
  • Oyakodon Ending
  • Sex with Protagonist Only
  • Rope Bondage
  • Naked Heroine with Apron
  • Threesome
Rating 7.6542 Users
Bosei Kanojo -Shikyuu Kikan Hen-
Bosei Kanojo -Shikyuu Kikan Hen-
27%
Tags
  • Ejaculation Forewarner
  • Office Lady Heroine
  • Pure Love Story
  • Nursing Handjob
  • Ejaculation Choice
Rating 7.3891 Users
Game (=Eroge) Mitai na, Suteki na Koi ga Shitai!
Game (=Eroge) Mitai na, Suteki na Koi ga Shitai!
27%
Tags
  • Production of Pornography (Professional)
  • Protagonist's Older Sister as a Heroine
  • Production of Pornography (Drawn)
  • Piss Drinking
  • Twin Buttjob
Rating 7.6580 Users
Love×Holic ~Miwaku no Otome to Hakudaku Kankei~
Love×Holic ~Miwaku no Otome to Hakudaku Kankei~
27%
Tags
  • Yuki-onna Heroine
  • Oni Heroine
  • Dragon Heroine
  • Vampire Heroine
  • Witch Heroine
Rating 7.91283 Users
Bubble de House de OOO ~Ofuro Maker no Showroom ga Sharehouse de...~
Bubble de House de OOO ~Ofuro Maker no Showroom ga Sharehouse de...~
26%
Tags
  • Share House
  • Twin Buttjob
  • Group (4+) Boobjob
  • Sex on a Roof
  • Nursing Handjob
Rating 7.2948 Users
Boku to Kanojo no Kojin Lesson
Boku to Kanojo no Kojin Lesson
26%
Tags
  • Only Older Heroines
  • Student-Teacher Romance
  • Pillow Talk
  • Has Window Transparency Setting
  • Only Adult Heroines
Rating 7.64103 Users

Suiren to Shion 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 (29 total)

NameScoreImportanceWeight
Protagonist with Voiced Changeable Names3.003.089.23
Cousin Romance2.832.396.77
Island3.001.945.83
Non-twin Heroine Sisters2.802.015.63
Cousin Incest2.752.015.53
Threesome Ending3.001.745.22
Protagonist's Cousin as a Heroine2.671.885.03
Oneesan-type Heroine2.751.835.03
Summer3.001.675.00
Track Display2.002.414.83
Threesome2.501.604.01
Armpit Sex2.002.004.00
Read Text Marking2.001.843.68
Sex with Protagonist Only3.001.133.39
Background Moans2.331.443.35
Heroine with Huge Breasts2.331.423.30
Early Sexual Content2.671.233.27
High Sexual Content3.001.053.15
Sounds of Copulation2.331.293.01
Adult Heroine2.251.142.56
Only Virgin Heroines2.331.082.52
High School Student Heroine2.500.852.13
Heroine with Big Breasts2.330.851.99
Nukige3.000.651.95
Defloration2.500.761.90
Nameable Protagonist1.800.911.65
Male Protagonist2.000.300.61
ADV2.330.150.34
2.000.000.00

Traits (73 total)

NameCharactersImportanceWeight
Cousin Role21.872.06
Pajamas Clothes21.751.92
Mobile Phone Items21.751.92
Reverse Missionary Subject of (Sexual)21.731.91
Geta Clothes12.711.88
Camera Items12.561.77
Naked Shirt Clothes12.511.74
Clothing with Ribbons Clothes21.571.73
Sleeveless Sweater Clothes12.481.72
Full Sister Role21.571.72
Armpit Sex Engages in (Sexual)12.481.72
Sex in Water Engages in (Sexual)21.561.72
Incest Engages in (Sexual)21.471.61
Bikini Clothes21.461.61
Seventh Posture Subject of (Sexual)21.461.60
Bathroom Sex Engages in (Sexual)21.391.53
Sex on Beach Engages in (Sexual)12.161.50
Off-The-Shoulder Shirt Clothes12.151.49
Bukkake Subject of (Sexual)21.351.48
Consensual Porn Acting Engages in (Sexual)12.101.45
Sex in a Vehicle Engages in (Sexual)12.041.41
Belt Clothes21.271.40
Mutual Masturbation Engages in (Sexual)11.941.34
Blue Hair21.191.31
Group Sex of One Male and Several Females Engages in (Sexual)21.171.29
Butterfly Subject of (Sexual)21.171.29
Yukata Clothes11.851.28
Handjob Engages in (Sexual)21.161.27
Shirt Clothes21.161.27
Outdoor Sex Engages in (Sexual)21.161.27
Hair Flower Clothes11.771.22
Sport Bloomers Clothes11.721.19
Quickie Fix Subject of (Sexual)21.081.19
Vaginal Masturbation Engages in (Sexual)11.701.18
Boobjob Engages in (Sexual)21.071.17
Reverse Cowgirl Subject of (Sexual)11.631.13
Kimono Clothes11.561.08
Older Sister Role11.561.08
Sidehair Hair20.981.07
Cowgirl Subject of (Sexual)20.951.05
Straight Hair20.951.04
Sailor School Uniform Clothes11.481.03
Younger Sister Role11.441.00
Tank Top Clothes11.420.98
Hair Tie Clothes11.410.97
Hairpin Clothes11.400.97
Pleated Skirt Clothes11.400.97
Blunt Bangs Hair11.400.97
Nipple Sucking Subject of (Sexual)11.380.96
Tsurime Eyes11.380.96
Female Ejaculation Engages in (Sexual)11.370.95
Virgin Sex Engages in (Sexual)20.850.93
Skirt Clothes11.330.93
T-shirt Clothes11.310.91
Blue Eyes20.800.88
Sex in Public Places Engages in (Sexual)11.260.87
Sixty-nine Engages in (Sexual)11.260.87
Blowjob Engages in (Sexual)20.760.84
Long Hair20.750.83
Standing Sex Subject of (Sexual)11.180.82
Cunnilingus Subject of (Sexual)11.160.81
Twin Tails Hair11.130.78
Missionary Subject of (Sexual)11.120.77
Ponytail Hair11.100.76
Vaginal Fingering Subject of (Sexual)11.080.75
Miniskirt Clothes11.060.74
Sitting Sex Subject of (Sexual)11.060.74
Doggy Style Subject of (Sexual)10.930.64
Slim Body20.580.63
High School Student Role10.850.59
Young-adult Body10.760.53
Teen Body10.620.43
Pale Body20.370.41