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Summary

Our protagonist lives out in the city but one summer decides to return to his rural hometown and it is there he once again meets his childhood friend, Ion… who is now a mermaid!? Soon after he also meets Petakko, a mermaid who has lost her memory, and Rin, a priestess who looks after mermaids but also has a split personality. It is these encounters that brings our protagonist in contact with the legend surrounding mermaid. Together with Ion, who is at the center of this mysterious legend, as well as Petakko and Rin, our protagonist’s strange summer vacation begins…

Bai Qu
Bai Qu
NAN%
Tags
  • Illness
  • Modern Day China
  • Non-Japanese Voice Acting
  • Few Choices
  • Multiple Endings
Rating 6.5933 Users
Yan Moe Futago Shimai ~Yande Harande Ai Sarete...~
Yan Moe Futago Shimai ~Yande Harande Ai Sarete...~
NAN%
Tags
  • Heroine with Baby Complex
  • Shimaidon with Twins Ending
  • Shimaidon Ending
  • Twin Sisters as Heroines
  • Yandere Heroine
Rating 6.4640 Users
Yandere Imouto ni Aisaresugite Kozukuri Seikatsu
Yandere Imouto ni Aisaresugite Kozukuri Seikatsu
NAN%
Tags
  • Yandere Heroine
  • Heroine with Baby Complex
  • Brocon Heroine
  • Sexual Content
  • Male Protagonist
Rating 6.8325 Users
Amamane
Amamane
NAN%
Tags
  • Baseball
  • Slice of Life
  • Only Younger Heroines
  • Protagonist's Kouhai as a Heroine
  • Single Ending
Rating 6.7156 Users
Seishukujo e no Aiiku Choukyou ~Somerareru Junketsu~
Seishukujo e no Aiiku Choukyou ~Somerareru Junketsu~
NAN%
Tags
  • Poor Heroine
  • Wealthy Protagonist
  • Inter-class Romance
  • Homeless Heroine
  • Group Sex of Several Females
Rating 6.1470 Users
Darashi ga nai Kyonyuu Onee-san no Osewa o Yaitara Tanetsuke Harem Seikatsu o Suru Koto ni Natta Ken
Darashi ga nai Kyonyuu Onee-san no Osewa o Yaitara Tanetsuke Harem Seikatsu o Suru Koto ni Natta Ken
NAN%
Tags
  • Aunt/Nephew Incest
  • Protagonist's Aunt as a Heroine
  • Office Lady Heroine
  • Masochist Heroine
  • Yamato Nadeshiko Heroine
Rating 5.5039 Users
Kirakira Stars -idol project Nagisa-
Kirakira Stars -idol project Nagisa-
NAN%
Tags
  • Detached Sexual Content
  • Cliffhanger Ending
  • No Quick Save/Load
  • Meaningless Choices
  • Idol Heroine
Rating 5.8452 Users
Kira☆Kano
Kira☆Kano
NAN%
Tags
  • Online Streamer Protagonist
  • Online Streamer Heroine
  • Virtual Youtubers
  • Gyaru Heroine
  • Highly Animated Sprites
Rating 6.8427 Users
Tsuma ni Naisho no JK Anal Choukyou ~Imouto ni Shiriana no Yosa o Oshieru Gikei~
Tsuma ni Naisho no JK Anal Choukyou ~Imouto ni Shiriana no Yosa o Oshieru Gikei~
NAN%
Tags
  • Anal Fisting
  • Anal Penetration
  • Ojousama Heroine
  • Anal Toys
  • Reverse Cowgirl
Rating 6.2625 Users
Yandere na Majo San Shimai ni Shinuhodo Aishi Tsukusareru Isekai Seikatsu
Yandere na Majo San Shimai ni Shinuhodo Aishi Tsukusareru Isekai Seikatsu
NAN%
Tags
  • Prince Protagonist
  • Witch Heroine
  • Non-twin Heroine Sisters
  • Yandere Heroine
  • Shimaidon
Rating 5.9839 Users
Fuyu no Polaris
Fuyu no Polaris
NAN%
Tags
  • Tomboy Protagonist
  • Epidemic
  • Journey
  • Multiple Protagonists
  • Apocalypse
Rating 7.22128 Users
Kakurete! Doki Doki Idol H! ~Manager to no Ikenai Lesson?~
Kakurete! Doki Doki Idol H! ~Manager to no Ikenai Lesson?~
NAN%
Tags
  • Manager Protagonist
  • Japanese Idols
  • Exhibitionism
  • Discreet Masturbation
  • Idol Heroine
Rating 6.4220 Users
Miraeui Yeochinnimi Naege Insareul Geonnewatda
Miraeui Yeochinnimi Naege Insareul Geonnewatda
NAN%
Tags
  • Sudden Girlfriend Appearance
  • Pure Love Story
  • Nakige
  • Time Travel
  • Protagonist's Girlfriend as a Heroine
Rating 6.2939 Users
Milaesegyeui Maeng-in
Milaesegyeui Maeng-in
NAN%
Tags
  • School Art Club
  • Near Future
  • Painter Protagonist
  • Painter Heroine
  • Ladder Structure
Rating 6.8830 Users
G-Senjou no Maou - Dai Bangaihen "Sharin no Kuni no Maou"
G-Senjou no Maou - Dai Bangaihen "Sharin no Kuni no Maou"
NAN%
Tags
  • Sexual Content
  • Male Protagonist
  • ADV
Rating 6.0724 Users
Otome no Kyouren ~Modae Ochi Yuku Junjou~
Otome no Kyouren ~Modae Ochi Yuku Junjou~
NAN%
Tags
  • Yandere Heroine
  • Heroine with Latex
  • Only Virgin Heroines
  • Strap-on Dildos
  • High School Student Heroine
Rating 5.7323 Users
Traumermaid
Traumermaid
NAN%
Tags
  • Multiple True Endings
  • Timid Heroine
  • Fairy Tale
  • Unique Routes
  • Love Triangle
Rating 6.6131 Users
Kemo Ane ~Kemomimi Onee-san o Oyome-san ni Shite Isekai Haramase Slow Life~
Kemo Ane ~Kemomimi Onee-san o Oyome-san ni Shite Isekai Haramase Slow Life~
NAN%
Tags
  • Doggirl Heroine
  • Kemonomimi Heroine
  • Discrimination
  • Protagonist from a Different World
  • Unnamed Protagonist
Rating 6.5045 Users
Ecchi na Onee-san Bakari no Ryou no Kanrinin ni Nattara Tanetsuke Sex ga Tomaranai
Ecchi na Onee-san Bakari no Ryou no Kanrinin ni Nattara Tanetsuke Sex ga Tomaranai
NAN%
Tags
  • Only Older Heroines
  • Group (4+) Boobjob
  • Dormitory Manager Protagonist
  • Nympho Heroine
  • Athlete Heroine
Rating 5.9066 Users
Otacir no Hime wa Watashi nan Dakara! ~Ano Ko, Doutei Minna de Kowashichae~
Otacir no Hime wa Watashi nan Dakara! ~Ano Ko, Doutei Minna de Kowashichae~
NAN%
Tags
  • Otaku Protagonist
  • Completion Status Indicator
  • Remote-controlled Vibrator
  • Hairjob
  • Sexual Cosplay
Rating 5.0237 Users
Ie no Kagi
Ie no Kagi
NAN%
Tags
  • Elementary School
  • Lolicon Protagonist
  • Elementary School Student Heroine
  • Vertically Oriented Text
  • Infodumping
Rating 6.4958 Users
Camera o Tomenaide! ~Wakazuma no Kakusareta Yokubou~
Camera o Tomenaide! ~Wakazuma no Kakusareta Yokubou~
NAN%
Tags
  • Photographer Protagonist
  • Infidelity
  • Heroine with Pubic Hair
  • Group Sex of One Female and Several Males
  • Female Protagonist
Rating 5.3136 Users
Kanojo no Imouto to Himitsu no Stay Home ~Uchiki Musume ga Haitoku Netori!~
Kanojo no Imouto to Himitsu no Stay Home ~Uchiki Musume ga Haitoku Netori!~
NAN%
Tags
  • Reverse Netorare
  • Shimaidon
  • Completion Status Indicator
  • Shimaidon Ending
  • Short Sexual Scenes
Rating 5.9768 Users
Onee-san ni Makasenasai! ~Ryoubo to Joushi no Yawaraka Oppai ni Hasamarete~
Onee-san ni Makasenasai! ~Ryoubo to Joushi no Yawaraka Oppai ni Hasamarete~
NAN%
Tags
  • Dormitory Manager Heroine
  • Protagonist's Boss as a Heroine
  • Defloration During Common Route
  • Office Lady Heroine
  • Heroine with Inverted Nipples
Rating 6.6632 Users
Missing Time
Missing Time
15%
Tags
  • Homecoming
  • Psychological Problems
  • Horror
  • Slice of Life
  • Mystery
Rating 6.5227 Users
Death Game
Death Game
13%
Tags
  • Battle Royale
  • Confinement
  • Mystery
  • No Sexual Content
  • Male Protagonist
Rating 5.6220 Users
Milaesegyeui Maeng-in
Milaesegyeui Maeng-in
12%
Tags
  • School Art Club
  • Near Future
  • Painter Protagonist
  • Painter Heroine
  • Ladder Structure
Rating 6.8830 Users
Miraeui Yeochinnimi Naege Insareul Geonnewatda
Miraeui Yeochinnimi Naege Insareul Geonnewatda
12%
Tags
  • Sudden Girlfriend Appearance
  • Pure Love Story
  • Nakige
  • Time Travel
  • Protagonist's Girlfriend as a Heroine
Rating 6.2939 Users
Kakurete! Doki Doki Idol H! ~Manager to no Ikenai Lesson?~
Kakurete! Doki Doki Idol H! ~Manager to no Ikenai Lesson?~
12%
Tags
  • Manager Protagonist
  • Japanese Idols
  • Exhibitionism
  • Discreet Masturbation
  • Idol Heroine
Rating 6.4220 Users
Yandere na Majo San Shimai ni Shinuhodo Aishi Tsukusareru Isekai Seikatsu
Yandere na Majo San Shimai ni Shinuhodo Aishi Tsukusareru Isekai Seikatsu
11%
Tags
  • Prince Protagonist
  • Witch Heroine
  • Non-twin Heroine Sisters
  • Yandere Heroine
  • Shimaidon
Rating 5.9839 Users
Fuyu no Polaris
Fuyu no Polaris
11%
Tags
  • Tomboy Protagonist
  • Epidemic
  • Journey
  • Multiple Protagonists
  • Apocalypse
Rating 7.22128 Users
Kira☆Kano
Kira☆Kano
10%
Tags
  • Online Streamer Protagonist
  • Online Streamer Heroine
  • Virtual Youtubers
  • Gyaru Heroine
  • Highly Animated Sprites
Rating 6.8427 Users
Tsuma ni Naisho no JK Anal Choukyou ~Imouto ni Shiriana no Yosa o Oshieru Gikei~
Tsuma ni Naisho no JK Anal Choukyou ~Imouto ni Shiriana no Yosa o Oshieru Gikei~
9%
Tags
  • Anal Fisting
  • Anal Penetration
  • Ojousama Heroine
  • Anal Toys
  • Reverse Cowgirl
Rating 6.2625 Users
Otome no Kyouren ~Modae Ochi Yuku Junjou~
Otome no Kyouren ~Modae Ochi Yuku Junjou~
9%
Tags
  • Yandere Heroine
  • Heroine with Latex
  • Only Virgin Heroines
  • Strap-on Dildos
  • High School Student Heroine
Rating 5.7323 Users
Kemo Ane ~Kemomimi Onee-san o Oyome-san ni Shite Isekai Haramase Slow Life~
Kemo Ane ~Kemomimi Onee-san o Oyome-san ni Shite Isekai Haramase Slow Life~
9%
Tags
  • Doggirl Heroine
  • Kemonomimi Heroine
  • Discrimination
  • Protagonist from a Different World
  • Unnamed Protagonist
Rating 6.5045 Users
Otacir no Hime wa Watashi nan Dakara! ~Ano Ko, Doutei Minna de Kowashichae~
Otacir no Hime wa Watashi nan Dakara! ~Ano Ko, Doutei Minna de Kowashichae~
9%
Tags
  • Otaku Protagonist
  • Completion Status Indicator
  • Remote-controlled Vibrator
  • Hairjob
  • Sexual Cosplay
Rating 5.0237 Users
Camera o Tomenaide! ~Wakazuma no Kakusareta Yokubou~
Camera o Tomenaide! ~Wakazuma no Kakusareta Yokubou~
9%
Tags
  • Photographer Protagonist
  • Infidelity
  • Heroine with Pubic Hair
  • Group Sex of One Female and Several Males
  • Female Protagonist
Rating 5.3136 Users
Onee-san ni Makasenasai! ~Ryoubo to Joushi no Yawaraka Oppai ni Hasamarete~
Onee-san ni Makasenasai! ~Ryoubo to Joushi no Yawaraka Oppai ni Hasamarete~
8%
Tags
  • Dormitory Manager Heroine
  • Protagonist's Boss as a Heroine
  • Defloration During Common Route
  • Office Lady Heroine
  • Heroine with Inverted Nipples
Rating 6.6632 Users
Dare ka ga Koi Shita Hankagai ~Butterfly Loved the Street~
Dare ka ga Koi Shita Hankagai ~Butterfly Loved the Street~
8%
Tags
  • Alternate Dimensions
  • Twin Sister Support Character
  • Cook Protagonist
  • Donkan Protagonist
  • Hero(ine) Selection
Rating 6.4150 Users
Bitch Gyaru no Gachi Iki Acme ~Katei Kyoushi no Doutei Kyokon ni Hamari Ochi~
Bitch Gyaru no Gachi Iki Acme ~Katei Kyoushi no Doutei Kyokon ni Hamari Ochi~
8%
Tags
  • Gynophobic/Androphobic Protagonist
  • Timid Protagonist
  • Gyaru Heroine
  • Drastic Character Development
  • Only Non-Virgin Heroines
Rating 6.2726 Users
Winter
Winter's Empty Mask
8%
Tags
  • Horror
  • Mystery
  • RPG
  • Male Protagonist
Rating 5.8320 Users
Ero Item de Haramase Harem Seikatsu ~Isekai no Kyonyuu Mesu-tachi o Niku Onaho Ni!~
Ero Item de Haramase Harem Seikatsu ~Isekai no Kyonyuu Mesu-tachi o Niku Onaho Ni!~
8%
Tags
  • Unavoidable Heroine Rape by the Protagonist
  • Food Gokkun
  • Naked Dogeza
  • Heroine with Slave Tattoo (BDSM)
  • Nose Hook
Rating 6.0834 Users
Shasei no Jikan! ~Boku no Oinari-san wa Babumi Tappuri no Oiroke Onee-san~
Shasei no Jikan! ~Boku no Oinari-san wa Babumi Tappuri no Oiroke Onee-san~
7%
Tags
  • Kitsune Heroine
  • Heroine with Kimono
  • Ear-Cleaning
  • Single Handjob
  • Single Boobjob
Rating 6.1838 Users
Seitenshi Sharlot Ingyaku no Dorei Choukyou ~Goshujin-sama Dake no Harami Tenshi ni Shite Kudasai~
Seitenshi Sharlot Ingyaku no Dorei Choukyou ~Goshujin-sama Dake no Harami Tenshi ni Shite Kudasai~
7%
Tags
  • Rape by Deception
  • Heroine with Wings
  • Angel Heroine
  • Clothed Male Naked Female
  • Energy Transfer via Sex
Rating 5.0962 Users
Hora, Sonna ni Koe o Morasu to Kareshi ni Barechimau ze? ~Eroge Sekai de Mob no Shoujo o Netotte Mita~
Hora, Sonna ni Koe o Morasu to Kareshi ni Barechimau ze? ~Eroge Sekai de Mob no Shoujo o Netotte Mita~
7%
Tags
  • Timid Heroine
  • Heroine with Eye Covering Hairstyle
  • Hero in Relationship with Other(s)
  • Protagonist from a Different World
  • Sexual Slavery (Consensual)
Rating 6.5736 Users
Kuro Gyaru Bitch ni Shasei Kanri Saremashita? ~Aashi ni Ironna Kakkou Sasete Koufun Suru toka Kimoin Desu kedo~
Kuro Gyaru Bitch ni Shasei Kanri Saremashita? ~Aashi ni Ironna Kakkou Sasete Koufun Suru toka Kimoin Desu kedo~
7%
Tags
  • Bimbofication
  • Gyaru Heroine
  • Handjob
  • Dark Skinned Heroine
  • Background Moans
Rating 6.6221 Users
Haishin 2
Haishin 2
7%
Tags
  • Shopping Mall
  • Character Movement
  • Jump Scares
  • Puzzle Game
  • Online Streamer Protagonist
Rating 6.0025 Users

Bangguseoge Ineoagassi has not appeared in our Steam sample enough to calculate it's similar novels... sorry!
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Tags (13 total)

NameScoreImportanceWeight
Mermaid Heroine3.002.597.77
Support Character with Multiple Personalities2.003.496.99
Lazy Heroine2.002.705.40
Summer3.001.664.99
Japanese Voice Acting (For Non-OJLVNs)2.002.354.71
Shy Heroine2.001.703.39
Non-Japanese Voice Acting2.001.462.92
Bad Ending(s)2.001.192.39
Protagonist's Childhood Friend as a Heroine2.001.142.28
Multiple Endings2.000.671.34
No Sexual Content2.000.571.13
Male Protagonist2.000.300.60
ADV2.000.140.29

Traits (36 total)

NameCharactersImportanceWeight
Fish Fins Body23.023.32
Merperson Role22.893.18
Hanbok Clothes13.742.59
Weak Memory Subject of13.022.10
Oversized Clothing Clothes12.801.94
Childishly Violent Personality12.641.83
Mini Hat Clothes12.601.81
Split Personality Subject of12.561.77
Priest Role12.431.69
Gradient Colored Hair Hair12.121.47
Hazel Eyes12.041.41
Cyan Hair12.031.41
Bob Cut Hair11.821.26
Cheerful Personality11.741.20
Outgoing Personality11.731.20
Reserved Personality11.711.19
Garnet Eyes11.661.15
Shy Personality11.621.12
V Bangs Hair11.410.98
Blunt Bangs Hair11.400.97
Grey Hair11.380.96
Kid Body11.370.95
Ahoge Hair11.320.92
Childhood Friend Role11.260.87
Dress Clothes11.250.87
Blue Hair11.190.83
Big Breasts Body11.130.78
Parted to Side Hair11.050.73
Spiky Bangs Hair11.000.69
Sidehair Hair10.980.68
Short Hair20.610.67
Waist Length+ Hair10.810.56
Black Hair10.800.56
Blue Eyes10.800.56
Pale Body30.370.51
Teen Body10.620.43