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Summary

Yuu has just started his sophomore year but his cousin, Rin, suddenly comes to his school to work as a trainee teacher. Since they haven't seen each other for a long time and Rin has become quite beautiful, he starts to see her as a woman. However, she still treats him like a younger brother. One day, he accidently picks up Rin's underwear and is discoverd by her. Surprisingly, she tells him that she would help him. And so, his erotic life guided by her begins. [Translated from Official Site]

Nee-chan, Mou Dechau yo! ~In Ane wa Ore no Ai Gangu~
Nee-chan, Mou Dechau yo! ~In Ane wa Ore no Ai Gangu~
NAN%
Tags
  • Protagonist's Older Sister as a Heroine
  • Protagonist's Full Sister as a Heroine
  • Inbreeding
  • Pubic Hair Option
  • Only Older Heroines
Rating 6.4347 Users
Yankatsu! ~Yandere Futago to Hone no Zui made Icharabu Seikatsu Suru Hibi~
Yankatsu! ~Yandere Futago to Hone no Zui made Icharabu Seikatsu Suru Hibi~
NAN%
Tags
  • Shimaidon with Twins Ending
  • Shimaidon Ending
  • Balls Sucking
  • Yandere Heroine
  • Tribadism on Penis
Rating 5.8423 Users
Meimon Joshikou Ryokou ~Ore Dake Otoko Nandesu ga!?~
Meimon Joshikou Ryokou ~Ore Dake Otoko Nandesu ga!?~
NAN%
Tags
  • Trap Protagonist
  • All-girls School
  • Single Buttjob
  • Half-Japanese Heroine
  • Only Virgin Heroines
Rating 7.0724 Users
Shuukatsu!
Shuukatsu!
NAN%
Tags
  • School Nurse Heroine
  • Protagonist as the Only Male
  • Long Sexual Scenes
  • Highly Animated Sprites
  • Gynophobic/Androphobic Protagonist
Rating 6.8521 Users
Pure Marriage ~Akai Ito Monogatari - Madoka Hen~
Pure Marriage ~Akai Ito Monogatari - Madoka Hen~
NAN%
Tags
  • Wedding
  • Protagonist's Sister as a Support Character
  • Modern Tsundere Heroine
  • Donkan Protagonist
  • Naked Heroine with Apron
Rating 6.3638 Users
Gyaru Shojo!?
Gyaru Shojo!?
NAN%
Tags
  • Gyaru Heroine
  • Narrating Others' Thoughts
  • Prostitute Heroine
  • Heroine with Beauty Mark
  • Promiscuous Heroine
Rating 6.0219 Users
Kon
Kon'ya mo Aitsu ni Dakareru Kanojo - Kairaku ni Oborete Iku Ai Suru Kanojo Miori
NAN%
Tags
  • Dream
  • Promiscuous Heroine
  • Heroine Having Sex with Others
  • Netorare
  • Flashback
Rating 5.7323 Users
Hitozuma Zakari no Seishidou
Hitozuma Zakari no Seishidou
NAN%
Tags
  • Heroine with Children
  • Married Heroine
  • Teacher Heroine
  • Intercrural Sex
  • Big Breast Sizes Heroine
Rating 5.7818 Users
Binyuu Inmai Haruka "Watashi ni Iyarashii Cosplay Saseru nante... Kono Hentai!"
Binyuu Inmai Haruka "Watashi ni Iyarashii Cosplay Saseru nante... Kono Hentai!"
NAN%
Tags
  • Discipline Committee Leader Protagonist
  • Twin Bellyjob
  • Protagonist's Blood-related Sister as a Heroine
  • Heroine with Spats
  • Bunnygirl Cosplay
Rating 7.0626 Users
Siscon -Saiminjutsushi Onii-chan to Namaiki na Imouto-
Siscon -Saiminjutsushi Onii-chan to Namaiki na Imouto-
NAN%
Tags
  • Brother/Sister Incest
  • Chuunibyou Protagonist
  • Erotic Mind Control
  • Only Blood-related Heroines
  • Siscon Protagonist
Rating 6.2422 Users
Aerial Life
Aerial Life
NAN%
Tags
  • Gaming
  • Confinement in a Simulated Reality
  • Virtual Reality
  • Gamer Heroine
  • Protagonist's Kouhai as a Heroine
Rating 6.3023 Users
Tonari ni Kanojo no Iru Shiawase ~Curious Queen~
Tonari ni Kanojo no Iru Shiawase ~Curious Queen~
NAN%
Tags
  • Naked Sprites
  • Only a Single Heroine
  • Heroine with Big Breasts
  • High School Student Heroine
  • Sexual Content
Rating 6.0825 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
Iegami Nyoubou ~Zannen Bijin na Byakko to Dousei Hajimemashita.~
Iegami Nyoubou ~Zannen Bijin na Byakko to Dousei Hajimemashita.~
NAN%
Tags
  • Kitsune Heroine
  • Goddess Heroine
  • Kemonomimi Heroine
  • White Haired Heroine
  • Intercrural Sex
Rating 6.4215 Users
Haishin Seido ~Kanojo ga Toukou Sareru Wake~
Haishin Seido ~Kanojo ga Toukou Sareru Wake~
NAN%
Tags
  • Protagonist's Girlfriend as a Heroine
  • Urination Fetish
  • Double Handjob
  • Sexual Blindfold
  • Fingering
Rating 6.0815 Users
Zutto Mae Kara Joshi Deshita
Zutto Mae Kara Joshi Deshita
NAN%
Tags
  • Protagonist as the Only Male
  • High School
  • Protagonist's Childhood Friend as a Heroine
  • Shy Heroine
  • Sex with Protagonist Only
Rating 6.9530 Users
Ane wa Kanojo de Senzoku Maid
Ane wa Kanojo de Senzoku Maid
NAN%
Tags
  • Homemaker Protagonist
  • Stockings
  • Wedding
  • Condoms
  • Oneesan-type Heroine
Rating 6.3839 Users
Torotoro Ricchi ~Nee-chan to Sono Tomodachi to Boku.~
Torotoro Ricchi ~Nee-chan to Sono Tomodachi to Boku.~
NAN%
Tags
  • Straight Shotacon
  • Background Moans
  • Nursing Handjob
  • Only Older Heroines
  • Gyaru Heroine
Rating 6.6620 Users
Venus Resort: Kyonyuu Rankou Island ~Tajika Ui Hen~
Venus Resort: Kyonyuu Rankou Island ~Tajika Ui Hen~
NAN%
Tags
  • Photographer Protagonist
  • Cosplay
  • Drug Use
  • Nipple Piercing
  • Bleep Censor
Rating 7.1820 Users
Momojiri Instructor Netori Lesson ~Kyouei Mizugi de Ero Zanmai~
Momojiri Instructor Netori Lesson ~Kyouei Mizugi de Ero Zanmai~
NAN%
Tags
  • Chubby Protagonist
  • Coach Heroine
  • Heroine in Relationship with Other(s)
  • Swimming Club
  • Netori
Rating 6.4721 Users
Ai Suru Tsuma, Haruka ga Netorareru Wake ~Hoka no Otoko ni Dakare Iki Kuruu Inran Shitai~
Ai Suru Tsuma, Haruka ga Netorareru Wake ~Hoka no Otoko ni Dakare Iki Kuruu Inran Shitai~
NAN%
Tags
  • Netorare Type B
  • Heroine Having Sex with Others
  • Mirror Sex
  • Rape with Blackmail
  • Production of Pornography (Amateur)
Rating 6.1832 Users
Nyotai-ka Shitara Shouta na Otouto ga Hatsujou Shisugite Yabai! ~Hitamuki ni Motomerare Makuru Doukyo Seikatsu ga Yosugite Kokoro made Onee-chan ni Nacchau!?~
Nyotai-ka Shitara Shouta na Otouto ga Hatsujou Shisugite Yabai! ~Hitamuki ni Motomerare Makuru Doukyo Seikatsu ga Yosugite Kokoro made Onee-chan ni Nacchau!?~
NAN%
Tags
  • Non-blood-related Incest
  • Sex Change
  • Genderbent Sex
  • Suction on Nipples
  • Straight Shotacon
Rating 6.2321 Users
Seikan Esute - AKARI - Maki (28)
Seikan Esute - AKARI - Maki (28)
NAN%
Tags
  • Erotic Massage
  • Salaryman Protagonist
  • Sex Scene Recollection
  • Only a Single Heroine
  • Male Protagonist
Rating 6.3221 Users
Suspicion - Giwaku no Sei -
Suspicion - Giwaku no Sei -
NAN%
Tags
  • Reverse Netorare
  • European Heroine
  • Protagonist's Girlfriend as a Heroine
  • Promiscuous Heroine
  • High School Student Protagonist
Rating 6.2522 Users
Kakeochi
Kakeochi
44%
Tags
  • Heroine with a Sundress
  • Pure Love Story
  • Reunion
  • Protagonist's Childhood Friend as a Heroine
  • Single Handjob
Rating 6.0020 Users
Anikano Minato to Houkago Netori Lesson ♪
Anikano Minato to Houkago Netori Lesson ♪
40%
Tags
  • Cheerleader Heroine
  • Has Window Transparency Setting
  • Heroine in Relationship with Other(s)
  • Background Moans
  • Nursing Handjob
Rating 6.6212 Users
Iegami Nyoubou ~Zannen Bijin na Byakko to Dousei Hajimemashita.~
Iegami Nyoubou ~Zannen Bijin na Byakko to Dousei Hajimemashita.~
39%
Tags
  • Kitsune Heroine
  • Goddess Heroine
  • Kemonomimi Heroine
  • White Haired Heroine
  • Intercrural Sex
Rating 6.4215 Users
Aka-chan Hoshii na ~Kyou kara Hajimaru Love Love Ecchi~
Aka-chan Hoshii na ~Kyou kara Hajimaru Love Love Ecchi~
38%
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
Tonari ni Kanojo no Iru Shiawase ~Curious Queen~
Tonari ni Kanojo no Iru Shiawase ~Curious Queen~
37%
Tags
  • Naked Sprites
  • Only a Single Heroine
  • Heroine with Big Breasts
  • High School Student Heroine
  • Sexual Content
Rating 6.0825 Users
Siscon -Saiminjutsushi Onii-chan to Namaiki na Imouto-
Siscon -Saiminjutsushi Onii-chan to Namaiki na Imouto-
36%
Tags
  • Brother/Sister Incest
  • Chuunibyou Protagonist
  • Erotic Mind Control
  • Only Blood-related Heroines
  • Siscon Protagonist
Rating 6.2422 Users
Aerial Life
Aerial Life
36%
Tags
  • Gaming
  • Confinement in a Simulated Reality
  • Virtual Reality
  • Gamer Heroine
  • Protagonist's Kouhai as a Heroine
Rating 6.3023 Users
Hitozuma Zakari no Seishidou
Hitozuma Zakari no Seishidou
35%
Tags
  • Heroine with Children
  • Married Heroine
  • Teacher Heroine
  • Intercrural Sex
  • Big Breast Sizes Heroine
Rating 5.7818 Users
Binyuu Inmai Haruka "Watashi ni Iyarashii Cosplay Saseru nante... Kono Hentai!"
Binyuu Inmai Haruka "Watashi ni Iyarashii Cosplay Saseru nante... Kono Hentai!"
35%
Tags
  • Discipline Committee Leader Protagonist
  • Twin Bellyjob
  • Protagonist's Blood-related Sister as a Heroine
  • Heroine with Spats
  • Bunnygirl Cosplay
Rating 7.0626 Users
Zutto Mae Kara Joshi Deshita
Zutto Mae Kara Joshi Deshita
35%
Tags
  • Protagonist as the Only Male
  • High School
  • Protagonist's Childhood Friend as a Heroine
  • Shy Heroine
  • Sex with Protagonist Only
Rating 6.9530 Users
Torotoro Ricchi ~Nee-chan to Sono Tomodachi to Boku.~
Torotoro Ricchi ~Nee-chan to Sono Tomodachi to Boku.~
34%
Tags
  • Straight Shotacon
  • Background Moans
  • Nursing Handjob
  • Only Older Heroines
  • Gyaru Heroine
Rating 6.6620 Users
Momojiri Instructor Netori Lesson ~Kyouei Mizugi de Ero Zanmai~
Momojiri Instructor Netori Lesson ~Kyouei Mizugi de Ero Zanmai~
34%
Tags
  • Chubby Protagonist
  • Coach Heroine
  • Heroine in Relationship with Other(s)
  • Swimming Club
  • Netori
Rating 6.4721 Users
Nyotai-ka Shitara Shouta na Otouto ga Hatsujou Shisugite Yabai! ~Hitamuki ni Motomerare Makuru Doukyo Seikatsu ga Yosugite Kokoro made Onee-chan ni Nacchau!?~
Nyotai-ka Shitara Shouta na Otouto ga Hatsujou Shisugite Yabai! ~Hitamuki ni Motomerare Makuru Doukyo Seikatsu ga Yosugite Kokoro made Onee-chan ni Nacchau!?~
34%
Tags
  • Non-blood-related Incest
  • Sex Change
  • Genderbent Sex
  • Suction on Nipples
  • Straight Shotacon
Rating 6.2321 Users
Suspicion - Giwaku no Sei -
Suspicion - Giwaku no Sei -
33%
Tags
  • Reverse Netorare
  • European Heroine
  • Protagonist's Girlfriend as a Heroine
  • Promiscuous Heroine
  • High School Student Protagonist
Rating 6.2522 Users
Sukebe na Shojo no Tsukurikata
Sukebe na Shojo no Tsukurikata
33%
Tags
  • Consensual Phone Sex
  • Onsen
  • Female Protagonist for a Short Time
  • Only Younger Heroines
  • Condoms
Rating 6.9722 Users
Anekano ~Onee-chan to Ecchi de Amai Himitsu no Kankei~
Anekano ~Onee-chan to Ecchi de Amai Himitsu no Kankei~
31%
Tags
  • Straight Shotacon
  • Siscon Protagonist
  • Homemaker Protagonist
  • Shimaidon
  • Sister/Sister Incest
Rating 6.7323 Users
Shindan no Kekka, Sore wa Koi no Yamai Desu
Shindan no Kekka, Sore wa Koi no Yamai Desu
31%
Tags
  • Medical Doctor Heroine
  • Genre Savvy Protagonist
  • Protagonist's Non-blood-related Sister as a Heroine
  • Nurse Heroine
  • Spring
Rating 6.6922 Users
Boku One ~End of Summer Days After~
Boku One ~End of Summer Days After~
30%
Tags
  • Heroine with Baby Complex
  • Summer
  • Time Jump
  • Pillow Talk
  • Armpit Licking
Rating 7.2632 Users
Siskon
Siskon
30%
Tags
  • Brother/Sister Romance
  • Blood-related Brother/Sister Incest
  • Salaryman Protagonist
  • Childishly Violent Heroine
  • Childhood Promise
Rating 6.6029 Users
Hirusagari no Danchizuma 2 ~Otto ni wa Ienai Himitsu no Houmon Hanbai~
Hirusagari no Danchizuma 2 ~Otto ni wa Ienai Himitsu no Houmon Hanbai~
30%
Tags
  • Netori
  • Heroine with Leotard
  • Discreet Phone Sex
  • Penile Masturbation
  • Highly Animated Sprites
Rating 6.5829 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
29%
Tags
  • Nurse Protagonist
  • Prostitute Protagonist
  • Twin Footjob
  • Sex Involving Prostitution
  • Pregnancy
Rating 7.0335 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!?~
29%
Tags
  • Rounin Protagonist
  • Brother/Sister Romance
  • Blood-related Brother/Sister Incest
  • Only Blood-related Heroines
  • Only Older Heroines
Rating 6.8149 Users
Shiranu Ma ni Inran Kaihatsu Sareteita Saiai Kanojo ~Gomennasai... demo Anata yori Zenzen Kimochi Ii no~
Shiranu Ma ni Inran Kaihatsu Sareteita Saiai Kanojo ~Gomennasai... demo Anata yori Zenzen Kimochi Ii no~
29%
Tags
  • Protagonist's Girlfriend as a Heroine
  • Netorare Type B
  • Netorare
  • Protagonist in Relationship
  • Discreet Phone Sex
Rating 6.3827 Users
Joushi no Tsuma to Buka no Tsuma
Joushi no Tsuma to Buka no Tsuma
29%
Tags
  • Netori
  • Infidelity
  • Only Adult Heroines
  • Married Heroine
  • Harem Ending
Rating 6.5521 Users

One Love ~Yoru no Boku wa Ecchi na Onee-chan no Omocha ni Naru~ has not appeared in our Steam sample enough to calculate it's similar novels... sorry!
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Tags (20 total)

NameScoreImportanceWeight
Only Protagonist's Relatives as Heroine(s)2.002.555.10
Cousin Romance2.002.394.78
Childhood Promise2.002.134.27
Only Older Heroines2.002.104.19
Cousin Incest2.002.014.02
Protagonist's Cousin as a Heroine2.001.883.77
Oneesan-type Heroine2.001.833.66
Condoms2.001.653.31
Only Virgin Heroines3.001.083.25
Teacher Heroine2.001.362.73
Under the Same Roof2.001.272.54
Early Sexual Content2.001.232.45
High School Student Protagonist2.001.212.42
Only a Single Heroine2.001.022.04
Sexual Fantasizing1.001.971.97
Defloration2.000.761.52
Unlockable Routes1.001.491.49
Male Protagonist2.000.300.61
ADV2.000.150.29
2.000.000.00

Traits (15 total)

NameCharactersImportanceWeight
Cousin Role21.872.06
Androphobia Subject of12.871.99
Ane Act Role12.731.89
Tiny Braid Hair12.071.43
Twin Braids Hair11.861.29
Teacher Role11.551.08
Blue Eyes20.800.88
Ribbon Hair Tie Clothes11.190.83
Necktie Clothes11.110.77
High School Student Role10.850.59
Virgin Sex Engages in (Sexual)10.850.59
Waist Length+ Hair10.810.56
Black Hair10.810.56
Brown Hair10.680.47
Short Hair10.610.42