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Summary

It's summer vacation for twin lolita-esque rural country girls! Sadistic free spirit Ruka-chan, taciturn shy girl Hina-chan, and dirty uncle-like "Oji-san" have a hot wet summer of experimental c*ck and perversity!? It's all deliciously detailed in Oji-san's Diary of Summer Loli. [from Dlsite English]

Shoukoujo
Shoukoujo
NAN%
Tags
  • Protagonist's Younger Sister as a Heroine
  • Protagonist's Full Sister as a Heroine
  • Wake-up Sex
  • Urination Fetish
  • Perverted Protagonist
Rating 7.3685 Users
Let
Let's la Go! Bokura no Jiyuu Kenkyuu
NAN%
Tags
  • Lesbian Lolicon
  • Shota Protagonist
  • Straight Shotacon
  • Shotacon
  • Exhibitionism
Rating 6.7138 Users
Koki Kano ~Ikasete, Kokoa-chan!~
Koki Kano ~Ikasete, Kokoa-chan!~
NAN%
Tags
  • Non-penetrative Sex
  • Single Bodyjob
  • Single Leg Legjob
  • Skull-fucking
  • Bellyjob
Rating 6.9032 Users
The Guts! -Maximum Maternity!-
The Guts! -Maximum Maternity!-
NAN%
Tags
  • Shotacon Heroine
  • Muscular Heroine
  • Co-worker Heroine
  • Orekko Heroine
  • Protagonist's Boss as a Heroine
Rating 7.0731 Users
Ijikuri Mama 2
Ijikuri Mama 2
NAN%
Tags
  • Shotacon
  • Straight Shotacon
  • Protagonist's Blood-related Mother as a Heroine
  • Shota Protagonist
  • Blood-related Mother/Son Incest
Rating 5.4233 Users
Mama no Sakuranbo Gari♪
Mama no Sakuranbo Gari♪
NAN%
Tags
  • Shotacon Heroine
  • Nympho Protagonist
  • Infidelity
  • Incest
  • Heroine with Garter Belt
Rating 5.8231 Users
Midara na Mansion
Midara na Mansion
NAN%
Tags
  • Janitor Protagonist
  • Promiscuous Heroine
  • Apartment Building
  • Married Heroine
  • Adult Heroine
Rating 6.7121 Users
Otouto Shibori ~Ane-tachi no Sei Kyouiku~
Otouto Shibori ~Ane-tachi no Sei Kyouiku~
NAN%
Tags
  • Shotacon
  • Pegging
  • Footjob
  • Shota Protagonist
  • Oneesan-type Heroine
Rating 6.1321 Users
Lovecha ~Tsumasakidachi de, Hitomi o Tojite~
Lovecha ~Tsumasakidachi de, Hitomi o Tojite~
NAN%
Tags
  • Elementary School
  • Elementary School Student Heroine
  • Only Loli Heroines
  • Student-Teacher Romance
  • Armpit Licking
Rating 6.2225 Users
Little ☆ Twins ~Sugu ni Toriko ni Shiteageru♪~
Little ☆ Twins ~Sugu ni Toriko ni Shiteageru♪~
NAN%
Tags
  • Cousin Incest
  • Protagonist's Cousin as a Heroine
  • Twin Sisters as Heroines
  • Only Loli Heroines
  • Threesome Ending
Rating 6.2120 Users
Love Fetish ~Tekoki Hen~
Love Fetish ~Tekoki Hen~
NAN%
Tags
  • Flat Tints Only
  • High Sexual Content
  • Modern Day
  • Tsundere Heroine
  • Heroine with Zettai Ryouiki
Rating 6.7722 Users
Ai Suru Musuko no Shitsukekata ~Mama-tachi no Otoko no Ko M Ka Kyouiku~
Ai Suru Musuko no Shitsukekata ~Mama-tachi no Otoko no Ko M Ka Kyouiku~
NAN%
Tags
  • Straight Shotacon
  • Protagonist's Blood-related Mother as a Heroine
  • Shotacon
  • Shota Protagonist
  • Female Domination
Rating 5.3428 Users
Son of a ☆ Bitch ~Saotome Nobara-chan, Maji Bitch!~
Son of a ☆ Bitch ~Saotome Nobara-chan, Maji Bitch!~
NAN%
Tags
  • Male on Trap
  • Student Council President Heroine
  • Legwear Footjob
  • Group Sex of Multiple Females and Males
  • Female Domination
Rating 6.2024 Users
Immoral Little DS
Immoral Little DS
NAN%
Tags
  • Mesugaki Heroine
  • Female Domination Only
  • Lolicon Protagonist
  • Twin Footjob
  • Only Loli Heroines
Rating 6.6634 Users
Yuzuminatsu
Yuzuminatsu
NAN%
Tags
  • Only Loli Heroines
  • Defloration During Common Route
  • Siscon Protagonist
  • Heroine with Shorts
  • Imouto-type Heroine
Rating 6.6048 Users
Eroge Shiyou yo!
Eroge Shiyou yo!
NAN%
Tags
  • Romancing a Family
  • Production of Pornography (Drawn)
  • Otaku Protagonist
  • Armpit Sex
  • Twin Handjob
Rating 5.8727 Users
Zettai Majiiki!? Ichazura Happening! ~Henkei! Hentai!? Te ni Ireta Nouryoku de Eromero Power o Shuushuu Seyo!~
Zettai Majiiki!? Ichazura Happening! ~Henkei! Hentai!? Te ni Ireta Nouryoku de Eromero Power o Shuushuu Seyo!~
NAN%
Tags
  • Support Character with Kansai Accent
  • Shapeshifting
  • Built-in Flowchart
  • Inbreeding
  • Penis Growth
Rating 6.8726 Users
Tsuboi-kun no Switch!
Tsuboi-kun no Switch!
NAN%
Tags
  • Erotic Massage
  • Lotion Play
  • Shota Protagonist
  • Non-blood-related Mother/Son Incest
  • Pegging
Rating 7.1867 Users
Kyonyuu Seido Kaichou Chijoku no Hakudaku Kuro Tights ~Konna Yatsu no Okazu ni Naru nante!~
Kyonyuu Seido Kaichou Chijoku no Hakudaku Kuro Tights ~Konna Yatsu no Okazu ni Naru nante!~
NAN%
Tags
  • Student Council President Protagonist
  • Skip Scenes
  • Built-in Flowchart
  • Peace Sign Ahegao
  • Blowjob Duck Face
Rating 6.4431 Users
Love Fetish ~Paizuri Hen~
Love Fetish ~Paizuri Hen~
NAN%
Tags
  • Flat Tints Only
  • Reverse Trap Heroine
  • Naizuri
  • Small Breast Sizes Heroine (Non-Loli)
  • Bokukko Heroine
Rating 6.8020 Users
HOTOTOGISU -Messenu Mono no Arubeki ka-
HOTOTOGISU -Messenu Mono no Arubeki ka-
NAN%
Tags
  • Government
  • Sadist Protagonist
  • Politics
  • Rape Involving Drugs
  • Sexual Slavery (Choukyou Variation)
Rating 7.2441 Users
Princess Ultima ~Chijo to Noroi no Yubiwa~
Princess Ultima ~Chijo to Noroi no Yubiwa~
NAN%
Tags
  • Princess Protagonist
  • Lesbian Rape
  • Non-consensual Erotic Humiliation
  • Butler Hero
  • Perverted Protagonist
Rating 5.7831 Users
Ryoujoku Celeb Tsuma ~Kutsujoku!! Niku Dorei e no Daraku~
Ryoujoku Celeb Tsuma ~Kutsujoku!! Niku Dorei e no Daraku~
NAN%
Tags
  • Maid Support Character
  • Roses
  • Rapist Protagonist
  • Master and Servant
  • Netori
Rating 6.8027 Users
Demiparadoxia ∞ Hookerstic - Hokujou Hen
Demiparadoxia ∞ Hookerstic - Hokujou Hen
NAN%
Tags
  • Prostitute Heroine
  • Heroine with Anal Hair
  • Heroine with Armpit Hair
  • Pubic Hair Option
  • Hotel
Rating 6.4723 Users
Majo-gari no Kishi ~Jinkaku Ten
Majo-gari no Kishi ~Jinkaku Ten'i no Ori~
33%
Tags
  • Medieval Fantasy
  • Brother/Sister Incest
  • Body Swapping
  • Gaping
  • Incest
Rating 6.0823 Users
Oppai Kaijuu Akanegon ~Katei Kyoushi wa do S Chijo~
Oppai Kaijuu Akanegon ~Katei Kyoushi wa do S Chijo~
30%
Tags
  • Shota Protagonist
  • Straight Shotacon
  • Female Domination
  • Impregnation
  • Nympho Heroine
Rating 6.6826 Users
Immoral Little DS
Immoral Little DS
30%
Tags
  • Mesugaki Heroine
  • Female Domination Only
  • Lolicon Protagonist
  • Twin Footjob
  • Only Loli Heroines
Rating 6.6634 Users
Son of a ☆ Bitch ~Saotome Nobara-chan, Maji Bitch!~
Son of a ☆ Bitch ~Saotome Nobara-chan, Maji Bitch!~
28%
Tags
  • Male on Trap
  • Student Council President Heroine
  • Legwear Footjob
  • Group Sex of Multiple Females and Males
  • Female Domination
Rating 6.2024 Users
Ai Suru Musuko no Shitsukekata ~Mama-tachi no Otoko no Ko M Ka Kyouiku~
Ai Suru Musuko no Shitsukekata ~Mama-tachi no Otoko no Ko M Ka Kyouiku~
28%
Tags
  • Straight Shotacon
  • Protagonist's Blood-related Mother as a Heroine
  • Shotacon
  • Shota Protagonist
  • Female Domination
Rating 5.3428 Users
Little ☆ Twins ~Sugu ni Toriko ni Shiteageru♪~
Little ☆ Twins ~Sugu ni Toriko ni Shiteageru♪~
27%
Tags
  • Cousin Incest
  • Protagonist's Cousin as a Heroine
  • Twin Sisters as Heroines
  • Only Loli Heroines
  • Threesome Ending
Rating 6.2120 Users
Love Fetish ~Tekoki Hen~
Love Fetish ~Tekoki Hen~
27%
Tags
  • Flat Tints Only
  • High Sexual Content
  • Modern Day
  • Tsundere Heroine
  • Heroine with Zettai Ryouiki
Rating 6.7722 Users
Otouto Shibori ~Ane-tachi no Sei Kyouiku~
Otouto Shibori ~Ane-tachi no Sei Kyouiku~
27%
Tags
  • Shotacon
  • Pegging
  • Footjob
  • Shota Protagonist
  • Oneesan-type Heroine
Rating 6.1321 Users
Lovecha ~Tsumasakidachi de, Hitomi o Tojite~
Lovecha ~Tsumasakidachi de, Hitomi o Tojite~
27%
Tags
  • Elementary School
  • Elementary School Student Heroine
  • Only Loli Heroines
  • Student-Teacher Romance
  • Armpit Licking
Rating 6.2225 Users
Eroge Shiyou yo!
Eroge Shiyou yo!
26%
Tags
  • Romancing a Family
  • Production of Pornography (Drawn)
  • Otaku Protagonist
  • Armpit Sex
  • Twin Handjob
Rating 5.8727 Users
Tsuboi-kun no Switch!
Tsuboi-kun no Switch!
26%
Tags
  • Erotic Massage
  • Lotion Play
  • Shota Protagonist
  • Non-blood-related Mother/Son Incest
  • Pegging
Rating 7.1867 Users
Love Fetish ~Paizuri Hen~
Love Fetish ~Paizuri Hen~
26%
Tags
  • Flat Tints Only
  • Reverse Trap Heroine
  • Naizuri
  • Small Breast Sizes Heroine (Non-Loli)
  • Bokukko Heroine
Rating 6.8020 Users
Princess Ultima ~Chijo to Noroi no Yubiwa~
Princess Ultima ~Chijo to Noroi no Yubiwa~
26%
Tags
  • Princess Protagonist
  • Lesbian Rape
  • Non-consensual Erotic Humiliation
  • Butler Hero
  • Perverted Protagonist
Rating 5.7831 Users
Demiparadoxia ∞ Hookerstic - Hokujou Hen
Demiparadoxia ∞ Hookerstic - Hokujou Hen
25%
Tags
  • Prostitute Heroine
  • Heroine with Anal Hair
  • Heroine with Armpit Hair
  • Pubic Hair Option
  • Hotel
Rating 6.4723 Users
Minna Sasagechau!
Minna Sasagechau!
25%
Tags
  • Occult Club
  • Defloration During Common Route
  • Student Club Member Protagonist
  • Student Club President Heroine
  • Sex Under the Necessity
Rating 6.7631 Users
One x Shota
One x Shota
25%
Tags
  • Elementary School Student Hero
  • Sex Involving Children
  • Straight Shotacon
  • Shota Hero
  • Summer
Rating 6.9023 Users
♥ri na Gakkou Seikatsu
♥ri na Gakkou Seikatsu
25%
Tags
  • Rejuvenation
  • Oppai Loli Heroine
  • Perverted Friend
  • Only Loli Heroines
  • Deities
Rating 6.1524 Users
Cosscos! ~Anatagonomi no Cosplay H Shite Ageru~
Cosscos! ~Anatagonomi no Cosplay H Shite Ageru~
25%
Tags
  • Sex Involving Smegma
  • Shapeshifting
  • Ejaculation Forewarner
  • Pantyjob
  • Heroine with Intake Hairstyle
Rating 6.8827 Users
Aneboku ~Onee-chan wa Bijin 3 Shimai~
Aneboku ~Onee-chan wa Bijin 3 Shimai~
24%
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 7.1623 Users
Douryou no Oku-san ~Netori Tsuma, Netorare Tsuma~
Douryou no Oku-san ~Netori Tsuma, Netorare Tsuma~
24%
Tags
  • Netori
  • Clothed Male Naked Female
  • Wake-up Sex
  • Love Hotel
  • Sex in a Vehicle
Rating 7.0626 Users
Nyotai Kyouran -Haze Otome-
Nyotai Kyouran -Haze Otome-
24%
Tags
  • Multiple Penises
  • Grotesque Nipples
  • Autopenetration
  • Grotesque Body Modification
  • Foreskin Play
Rating 6.5236 Users
Mariko-sanchi no Seijijou ~Oba-san wa Boku no Mono~
Mariko-sanchi no Seijijou ~Oba-san wa Boku no Mono~
23%
Tags
  • Aunt/Nephew Incest
  • Protagonist's Aunt as a Heroine
  • Divorcee Heroine
  • Protagonist's Cousin as a Heroine
  • Childishly Violent Heroine
Rating 6.8628 Users
In
In'yoku Celeb Tsuma 2 ~Chijoku Seisai~
23%
Tags
  • Sexual Slavery
  • Netori
  • Body Piercing
  • Married Heroine
  • Modern Day Japan
Rating 6.8521 Users
Maternity Monsters! ~Jinrou Kaichou to Yuisho Tadashiki Kozukuri Sengen!~
Maternity Monsters! ~Jinrou Kaichou to Yuisho Tadashiki Kozukuri Sengen!~
23%
Tags
  • Heroine with Baby Complex
  • Sex with Monster Girls
  • Student Council President Heroine
  • Protagonist in Relationship
  • Monster Girl Heroine
Rating 6.4722 Users

♥ri no Natsuyasumi ~Oji-san Kansatsu Nikki~ 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 (63 total)

NameScoreImportanceWeight
Mesugaki Heroine3.002.627.87
Heroine with Tan Lines3.002.126.35
Countryside3.002.056.15
Uncle/Niece Incest2.002.965.92
Sex Involving Children3.001.955.85
Ballbusting2.002.885.76
Summer3.001.664.99
Masochist Protagonist2.002.474.94
Anal Object Insertion2.002.414.82
Bookworm Heroine2.002.254.51
Straight Lolicon3.001.504.50
Naizuri2.002.234.46
Only Loli Heroines2.501.784.44
Shimaidon Ending2.002.134.26
Heroine with a Fang2.002.064.12
Pissing on Others2.002.034.06
Unlockable Harem Ending2.001.873.75
Twin Sisters as Heroines2.001.823.65
Wake-up Sex2.001.813.62
Mutual Masturbation2.001.763.51
Threesome Ending2.001.743.48
Shy Heroine2.001.703.39
Perverted Protagonist2.001.653.30
Legwear Footjob2.001.623.24
Heroine with Zettai Ryouiki2.001.392.79
Perverted Heroine2.001.392.79
Hairjob1.501.852.77
Few Choices2.001.332.66
Early Sexual Content2.001.222.45
Female Domination1.671.442.40
Twin Tail Heroine2.001.172.35
Only Virgin Heroines2.001.082.16
Sitting Sex2.001.052.11
Naked Sprites2.001.052.10
Adult Protagonist2.001.022.04
Armpit Sex1.002.002.00
Outdoor Sex2.000.991.99
Sex with Sleepers1.001.901.90
Missionary Position2.000.941.88
Piss Drinking1.001.831.83
Bathroom Sex1.501.191.78
Promiscuous Heroine1.001.751.75
Twin Boobjob1.001.681.68
Facesitting1.001.651.65
Doggy Style2.000.801.61
Internal Exhibition of Sex1.001.561.56
Ejaculation Choice1.001.521.52
Oppai Loli Heroine0.672.201.47
Group Sex of One Male and Several Females1.500.921.37
Single Footjob1.001.371.37
Intercrural Sex1.001.341.34
Multiple Endings2.000.671.34
Nukige2.000.651.30
Twin Blowjob1.001.291.29
Defloration1.670.761.27
Sexual Content2.000.631.26
Bukkake1.001.201.20
Cowgirl1.330.841.11
Cunnilingus1.000.930.93
Male Protagonist3.000.300.90
ADV3.000.140.43
Loli Heroine0.331.190.39
2.000.000.00

Traits (61 total)

NameCharactersImportanceWeight
Pissing on Others Engages in (Sexual)22.272.49
Tanline Body22.262.48
Armpit Sex Subject of (Sexual)13.212.22
Twin Boobjob Engages in (Sexual)21.771.94
Naizuri Engages in (Sexual)12.571.78
Sleep Sex Subject of (Sexual)12.491.73
Armpit Sex Engages in (Sexual)12.481.72
Group Sex Engages in (Sexual)21.511.66
Hairjob Engages in (Sexual)12.341.62
Twin Blowjob Engages in (Sexual)21.451.59
V Bangs Hair21.411.55
Food Play Engages in (Sexual)12.231.55
Promiscuous Personality12.191.52
Kid Body21.371.51
Sexual Dominant Role12.161.50
Bookworm Personality12.161.50
Sundress Clothes12.141.49
Object Insertion Subject of (Sexual)12.131.48
Reading Engages in12.031.41
Small Breast Sizes Body12.001.39
Over The Knee Socks Clothes11.941.35
Sandals Clothes11.931.34
Intercrural Sex Engages in (Sexual)11.841.28
Outdoor Sex Engages in (Sexual)21.161.27
Flirting Engages in11.791.24
Hair Flower Clothes11.771.23
Pajamas Clothes11.751.21
Outgoing Personality11.731.20
Footjob Engages in (Sexual)11.721.19
Pervert Personality11.631.13
Shy Personality11.621.12
Clothing with Ribbons Clothes11.581.09
Sex in Water Engages in (Sexual)11.561.08
Older Sister Role11.561.08
Bracelet Clothes11.561.08
Big Breast Sizes Body11.551.08
Younger Sister Role11.441.00
Teasing Engages in11.441.00
Tank Top Clothes11.410.98
Hair Tie Clothes11.410.97
Hairpin Clothes11.400.97
Virgin Sex Engages in (Sexual)20.850.93
Blue Eyes20.800.88
Belt Clothes11.270.88
Standing Sex Subject of (Sexual)11.180.81
Cunnilingus Subject of (Sexual)11.160.81
Handjob Engages in (Sexual)11.160.80
Twin Tails Hair11.130.78
Tareme Eyes11.110.77
Miniskirt Clothes11.060.74
Sitting Sex Subject of (Sexual)11.060.74
Kind Personality11.030.71
Cowgirl Subject of (Sexual)10.950.66
Straight Hair10.940.65
Doggy Style Subject of (Sexual)10.920.64
Slim Body20.580.63
Waist Length+ Hair10.810.56
Black Hair10.800.56
Blowjob Engages in (Sexual)10.760.53
Long Hair10.750.52
Brown Hair10.680.47