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Summary

The protagonist is a high school student whose life changes drastically when one day his mother tells him a man has proposed to her and she asks for his blessing. Being raised entirely by his mother he accepts so she can be happy. Then the day he finally meets his new family he shockingly finds out his new sister is the school's student council president and popular student Sakuya, as he now forms part of the Aotsuki family. Sakuya has an unnatural fixation on making him her "brother pet". His cousin Shuri feels threatened by Sakuya taking the protagonist's sister spot and his childhood friend Kotori hates him for some reason. Eventually he is forced to run as the next student council president. Sakuya, Shuri, Kotori and Sakuya's twin sisters Yuzu and Kana will help him in his campaign. Who will the protagonist choose to help him in the election?

Gokkun Athlete! Kyonyuu Medalist no Oshaburi Kyouka Gasshuku
Gokkun Athlete! Kyonyuu Medalist no Oshaburi Kyouka Gasshuku
NAN%
Tags
  • Clothing ON/OFF
  • Athletics Festival
  • Athlete Heroine
  • Heroine with Tan Lines
  • Gokkun
Rating 6.9074 Users
Juku Volley ~Shigoki Shigokareru Ureta Hitozuma-tachi~
Juku Volley ~Shigoki Shigokareru Ureta Hitozuma-tachi~
NAN%
Tags
  • Volleyball Club
  • Sports
  • Triple Boobjob
  • Fictional Modern Day Japanese Countryside
  • Heroine with Huge Breasts
Rating 6.6728 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
  • Footjob
Rating 6.5236 Users
Fit Shichao! ~Toshiue Josei to Asedaku Lesson Hatsutaiken~
Fit Shichao! ~Toshiue Josei to Asedaku Lesson Hatsutaiken~
NAN%
Tags
  • Pregnancy Ending
  • Gaping
  • Orgasm Denial
  • Athlete Heroine
  • Heroine with Crotchless Clothing
Rating 6.9758 Users
Hani Tsuma
Hani Tsuma
NAN%
Tags
  • Protagonist's Employee as a Heroine
  • Protagonist's Fiancee as a Heroine
  • Cousin Romance
  • Student-Teacher Romance
  • Class President Heroine
Rating 6.9645 Users
Boku no Daisuki na Oba-san
Boku no Daisuki na Oba-san
NAN%
Tags
  • Blood-related Aunt/Nephew Incest
  • Protagonist's Aunt as a Heroine
  • Domicile
  • Netori
  • Incest Romance
Rating 6.5248 Users
Ane to Osananajimi wa Naka ga Ii! ~"Ninben" Tsuitenai shi...~
Ane to Osananajimi wa Naka ga Ii! ~"Ninben" Tsuitenai shi...~
NAN%
Tags
  • Brother/Sister Incest
  • Protagonist's Older Sister as a Heroine
  • Inbreeding
  • Triple Boobjob
  • Kneepit Sex
Rating 6.9860 Users
Yu no Mura Harem ~Kyonyuu Haramase Onsen Taizai Ki~
Yu no Mura Harem ~Kyonyuu Haramase Onsen Taizai Ki~
NAN%
Tags
  • Farmer Heroine
  • Only Adult Heroines
  • Cousin Incest
  • Adult Breast Feeding
  • Protagonist's Cousin as a Heroine
Rating 6.6931 Users
Hani Tsuma Hs ~After Wedding~
Hani Tsuma Hs ~After Wedding~
NAN%
Tags
  • Deredere Heroine
  • Cousin Romance
  • Student-Teacher Romance
  • Class President Heroine
  • Impregnation
Rating 6.8229 Users
Baku Ane 2 ~Otouto, Ippai Shibocchau zo!~
Baku Ane 2 ~Otouto, Ippai Shibocchau zo!~
NAN%
Tags
  • Blood-related Cousin Incest
  • Non-penetrative Sex
  • Breast Smothering
  • Lawyer Heroine
  • Big Ass Heroine
Rating 7.45152 Users
Harami Tama
Harami Tama
NAN%
Tags
  • Youkai Heroine
  • Youkai
  • European Heroine
  • Defloration During Common Route
  • Tailjob
Rating 6.7946 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
  • Only Good Endings
  • Triple Boobjob
Rating 7.44127 Users
Namaiki ~Kissuisou e Youkoso!~
Namaiki ~Kissuisou e Youkoso!~
NAN%
Tags
  • Clock Tower
  • Janitor Protagonist
  • Mangaka Heroine
  • Androphobic Heroine
  • Youkai Heroine
Rating 7.30106 Users
Onii-chan!! Shasei no Kanri wa Imouto ni Makasete!!
Onii-chan!! Shasei no Kanri wa Imouto ni Makasete!!
NAN%
Tags
  • Full Chastity Belt
  • Quadruple+ Blowjob
  • Only Younger Heroines
  • Brother/Sister Romance
  • Clothed Female Naked Male
Rating 6.6529 Users
Musuko ga Osewa ni Narimashite ~Miboujin Kanrinin-san to Kaa-san to~
Musuko ga Osewa ni Narimashite ~Miboujin Kanrinin-san to Kaa-san to~
NAN%
Tags
  • Mother/Son Incest
  • Only Adult Heroines
  • Masochist Heroine
  • Pregnancy Ending
  • Clothed Male Naked Female
Rating 6.2333 Users
Natsu Doki! Harem ~Shinsekitaku de no Nayameru Juken Benkyou~
Natsu Doki! Harem ~Shinsekitaku de no Nayameru Juken Benkyou~
NAN%
Tags
  • Sister/Sister Incest
  • Aunt/Nephew Incest
  • Cousin Incest
  • Protagonist's Aunt as a Heroine
  • Blood-related Sister/Sister Incest
Rating 6.6035 Users
Namepu!
Namepu!
NAN%
Tags
  • Single Legjob
  • Kneepit Sex
  • Pissing on Others
  • Protagonist's Full Sister as a Heroine
  • Reunion
Rating 6.7440 Users
Koakuma Hatsuiku Chu~!
Koakuma Hatsuiku Chu~!
NAN%
Tags
  • Submissive Protagonist
  • Only Younger Heroines
  • Imouto-type Heroine
  • Loli Support Character
  • Protagonist's Cousin as a Heroine
Rating 6.7234 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
  • Shapeshifting
  • Built-in Flowchart
  • Penis Growth
  • Inbreeding
  • Futanari on Female
Rating 6.4621 Users
Ojou-sama wa Katai no ga Osuki! ~Shinsei Naru Joshi Ryou Nikki~
Ojou-sama wa Katai no ga Osuki! ~Shinsei Naru Joshi Ryou Nikki~
NAN%
Tags
  • Cook Protagonist
  • Impregnation Choice
  • Gymnastic Heroine
  • Hotblooded Protagonist
  • Artist Heroine
Rating 6.5134 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
  • Sister Support Character
  • Shota Protagonist
  • Straight Shotacon
  • Handjob
  • Anilingus
Rating 6.2520 Users
Koi mo H mo Obenkyou mo, Omakase! Oneechan-bu
Koi mo H mo Obenkyou mo, Omakase! Oneechan-bu
NAN%
Tags
  • Ejaculation Forewarner
  • Harem Ending with Theme
  • Protagonist's Older Sister as a Heroine
  • Sadist Heroine
  • Heroine with Beauty Mark
Rating 6.5035 Users
Chupa Shite Ageru ~Sports Club no Onee-san~
Chupa Shite Ageru ~Sports Club no Onee-san~
NAN%
Tags
  • Businesswoman Heroine
  • Twin Buttjob
  • School Sports Club Member Heroine
  • Armpit Licking
  • Sports
Rating 6.8244 Users
Danchizuma to Now.
Danchizuma to Now.
NAN%
Tags
  • Pissing on Own Face
  • Actress Heroine
  • Lots of Character Sprites
  • Vaginal + Anal Object Insertion
  • Pegging
Rating 6.7854 Users
Ero Zemi ~Ecchi ni Yaru-ki ni ABC~
Ero Zemi ~Ecchi ni Yaru-ki ni ABC~
36%
Tags
  • Principal Heroine
  • Kneepit Sex
  • Mutual Masturbation
  • Masturbation with Object
  • Sex on a Beach
Rating 7.09106 Users
Baku Ane ~Otouto Shibocchau zo!~
Baku Ane ~Otouto Shibocchau zo!~
35%
Tags
  • Protagonist's Half-sister as a Heroine
  • Group (4+) Boobjob
  • Only Protagonist's Sisters as Heroine(s)
  • Non-twin Heroine Sisters
  • Comedic Love Triangle
Rating 7.57212 Users
Onii-chan!! Shasei no Kanri wa Imouto ni Makasete!!
Onii-chan!! Shasei no Kanri wa Imouto ni Makasete!!
33%
Tags
  • Full Chastity Belt
  • Quadruple+ Blowjob
  • Only Younger Heroines
  • Brother/Sister Romance
  • Clothed Female Naked Male
Rating 6.6529 Users
Namaiki ~Kissuisou e Youkoso!~
Namaiki ~Kissuisou e Youkoso!~
33%
Tags
  • Clock Tower
  • Janitor Protagonist
  • Mangaka Heroine
  • Androphobic Heroine
  • Youkai Heroine
Rating 7.30106 Users
Shigokare ~Ecchi na Joshi Daisei to Doki x2 Love Lesson!!~
Shigokare ~Ecchi na Joshi Daisei to Doki x2 Love Lesson!!~
32%
Tags
  • Slice of Life Comedy
  • University Student Heroine
  • Charming Protagonist
  • Only Good Endings
  • Triple Boobjob
Rating 7.44127 Users
Baku Ane 2 ~Otouto, Ippai Shibocchau zo!~
Baku Ane 2 ~Otouto, Ippai Shibocchau zo!~
30%
Tags
  • Blood-related Cousin Incest
  • Non-penetrative Sex
  • Breast Smothering
  • Lawyer Heroine
  • Big Ass Heroine
Rating 7.45152 Users
Harami Tama
Harami Tama
30%
Tags
  • Youkai Heroine
  • Youkai
  • European Heroine
  • Defloration During Common Route
  • Tailjob
Rating 6.7946 Users
Yu no Mura Harem ~Kyonyuu Haramase Onsen Taizai Ki~
Yu no Mura Harem ~Kyonyuu Haramase Onsen Taizai Ki~
30%
Tags
  • Farmer Heroine
  • Only Adult Heroines
  • Cousin Incest
  • Adult Breast Feeding
  • Protagonist's Cousin as a Heroine
Rating 6.6931 Users
Hani Tsuma Hs ~After Wedding~
Hani Tsuma Hs ~After Wedding~
30%
Tags
  • Deredere Heroine
  • Cousin Romance
  • Student-Teacher Romance
  • Class President Heroine
  • Impregnation
Rating 6.8229 Users
Natsu Doki! Harem ~Shinsekitaku de no Nayameru Juken Benkyou~
Natsu Doki! Harem ~Shinsekitaku de no Nayameru Juken Benkyou~
29%
Tags
  • Sister/Sister Incest
  • Aunt/Nephew Incest
  • Cousin Incest
  • Protagonist's Aunt as a Heroine
  • Blood-related Sister/Sister Incest
Rating 6.6035 Users
Koakuma Hatsuiku Chu~!
Koakuma Hatsuiku Chu~!
29%
Tags
  • Submissive Protagonist
  • Only Younger Heroines
  • Imouto-type Heroine
  • Loli Support Character
  • Protagonist's Cousin as a Heroine
Rating 6.7234 Users
Ojou-sama wa Katai no ga Osuki! ~Shinsei Naru Joshi Ryou Nikki~
Ojou-sama wa Katai no ga Osuki! ~Shinsei Naru Joshi Ryou Nikki~
28%
Tags
  • Cook Protagonist
  • Impregnation Choice
  • Gymnastic Heroine
  • Hotblooded Protagonist
  • Artist Heroine
Rating 6.5134 Users
Koi mo H mo Obenkyou mo, Omakase! Oneechan-bu
Koi mo H mo Obenkyou mo, Omakase! Oneechan-bu
28%
Tags
  • Ejaculation Forewarner
  • Harem Ending with Theme
  • Protagonist's Older Sister as a Heroine
  • Sadist Heroine
  • Heroine with Beauty Mark
Rating 6.5035 Users
Danchizuma to Now.
Danchizuma to Now.
28%
Tags
  • Pissing on Own Face
  • Actress Heroine
  • Lots of Character Sprites
  • Vaginal + Anal Object Insertion
  • Pegging
Rating 6.7854 Users
"Kareshi Inai Reki = Nenrei" Ja, Doushite Ikenai no yo!? ~Sei Torea Gakuen Ren
"Kareshi Inai Reki = Nenrei" Ja, Doushite Ikenai no yo!? ~Sei Torea Gakuen Ren'ai Kinshi Rei~
28%
Tags
  • Student Council Member Protagonist
  • Only Older Heroines
  • Foreskin Play
  • Protagonist with Phimosis
  • Sexual Cosplay
Rating 7.0965 Users
Love Tore ~Ecchi na Ren
Love Tore ~Ecchi na Ren'ai Training~
27%
Tags
  • Triple+ Buttjob
  • Cat Cosplay
  • Triple Boobjob
  • Heroine with Huge Breasts
  • Onahole
Rating 7.1969 Users
Papa Doki! ~Papa ga Daisuki Dakedo, Kazoku Dakara Mondai Nai yo ne!~
Papa Doki! ~Papa ga Daisuki Dakedo, Kazoku Dakara Mondai Nai yo ne!~
27%
Tags
  • Father/Daughter Romance
  • Rejuvenation
  • Fathercon Heroine
  • Protagonist's Blood-related Daughter as a Heroine
  • Only Protagonist's Relatives as Heroine(s)
Rating 6.7277 Users
Lovedori Halation
Lovedori Halation
27%
Tags
  • Sex Involving Smegma
  • Cosplay
  • Sexual Cosplay
  • Photographer Protagonist
  • Timid Protagonist
Rating 6.9959 Users
Meidokissa.
Meidokissa.
27%
Tags
  • Quadruple+ Blowjob
  • Protagonist's Niece as a Heroine
  • Masochist Protagonist
  • Uncle/Niece Incest
  • Foreskin Play
Rating 6.5735 Users
Idol Pafupafu Management -Geinou Musume o H ni Bust UP Producer-
Idol Pafupafu Management -Geinou Musume o H ni Bust UP Producer-
27%
Tags
  • Japanese Idols
  • Dying Protagonist
  • Breast Expansion
  • Leader Heroine
  • Chuunibyou Heroine
Rating 6.6138 Users
Ane Yome Quartet
Ane Yome Quartet
27%
Tags
  • Hikikomori Heroine
  • Oneesan-type Heroine
  • Gentle Protagonist
  • Sexual Roleplay
  • Marriage Ending
Rating 7.09109 Users
Natsu Doki!
Natsu Doki!
26%
Tags
  • Heroine with a Sundress
  • Sunflowers
  • Nude Filter
  • Maid Support Character
  • Defloration During Common Route
Rating 6.6929 Users
Mazomai ~M na Imouto no Ecchi na Onedari~
Mazomai ~M na Imouto no Ecchi na Onedari~
26%
Tags
  • Only Protagonist's Sisters as Heroine(s)
  • Harem Ending with Theme
  • Homemaker Protagonist
  • Naizuri
  • Masochist Heroine
Rating 6.5532 Users
Pen Pen Penalty - Hakoiri Musume-tachi o H ni Oshioki!!
Pen Pen Penalty - Hakoiri Musume-tachi o H ni Oshioki!!
26%
Tags
  • Food Gokkun
  • Cum on Food
  • Heroine with Shorts
  • Mirror Sex
  • Hero(ine) Selection
Rating 6.8543 Users

Chu x Pet 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 (98 total)

NameScoreImportanceWeight
Twin Buttjob2.002.695.37
Student Council President Protagonist2.002.655.29
Shimaidon with Twins Ending2.002.535.06
Protagonist's Older Sister as a Heroine3.001.644.91
Pegging2.501.904.76
Brocon Heroine3.001.584.74
Student Council2.002.274.54
Reverse Rape2.501.814.54
Brother/Sister Romance3.001.504.51
Protagonist's Non-blood-related Sister as a Heroine3.001.494.46
Kneepit Sex2.002.184.36
Oneesan-type Heroine2.501.744.35
Sadist Heroine2.002.164.33
Double Dildos2.002.074.14
Shimaidon Ending2.002.054.10
Sex on a Beach2.002.014.02
Protagonist as the Only Male2.001.993.98
Pantyjob2.001.973.94
Cousin Incest2.001.933.85
Inbreeding2.001.923.84
Sex with Sleepers2.001.883.76
Half-Japanese Heroine2.001.873.74
Female Domination2.671.393.72
Foreigner Heroine2.001.853.71
Pregnancy Good Ending2.001.853.70
Protagonist's Younger Sister as a Heroine3.001.223.66
Wake-up Sex2.001.813.61
Protagonist's Cousin as a Heroine2.001.803.60
Anal Fingering2.501.433.58
Student Council President Heroine2.001.783.56
Anilingus2.501.423.54
Love Hotel2.001.763.52
Sex Involving Drugs2.001.753.50
Mutual Masturbation2.001.703.40
Amnesia2.001.653.30
Anal Toys2.501.323.29
Twin Boobjob2.001.633.26
Reverse Missionary2.001.623.24
Excessive Semen2.001.603.19
Facesitting2.001.593.19
Sex in a Classroom2.001.593.18
Threesome2.001.583.16
Heroine with Swimsuits2.001.573.14
Discreet Sex2.001.573.13
Piledriver2.001.553.10
Sexual Slavery2.001.553.09
Non-blood-related Brother/Sister Incest2.001.523.04
Sounds of Copulation2.501.213.03
Dark Skinned Heroine2.001.523.03
Ejaculation Choice2.001.492.97
Sexual Blindfold2.001.472.93
Sex in Front of an Audience2.001.452.89
Spoons2.001.432.86
Kissing Scene2.001.412.82
Tsundere Heroine2.001.382.76
Sex in Water2.001.352.70
Vaginal Masturbation2.001.332.66
Single Footjob2.001.302.59
More Than Seven Endings2.001.292.57
Intercrural Sex2.001.272.54
Vaginal Fingering2.001.242.47
Twin Blowjob2.001.232.45
Female Ejaculation2.001.232.45
Single Handjob2.001.212.43
Under the Same Roof2.001.212.41
High School Student Protagonist2.001.172.34
Early Sexual Content2.001.162.33
Nameable Protagonist2.500.932.32
Bathroom Sex2.001.142.29
Anal Sex2.001.132.27
Twin Tail Heroine2.001.132.27
Bukkake2.001.132.26
Single Boobjob2.001.122.24
Sex with Protagonist Only2.001.102.20
Protagonist's Childhood Friend as a Heroine2.001.092.17
Vibrators2.001.082.16
Quickie Fix Position2.001.052.11
Sex in Public Places2.001.032.05
Only Virgin Heroines2.001.022.05
Bondage2.001.022.05
Sixty-nine2.001.012.01
Naked Sprites2.001.002.00
Standing Sex2.000.991.98
Sitting Sex2.000.991.98
Outdoor Sex2.000.931.86
Single Blowjob2.000.881.77
Cunnilingus2.000.881.76
Missionary Position2.000.881.76
Hairjob1.001.761.76
Group Sex of One Male and Several Females2.000.851.70
Forbidden Love1.001.691.69
High School Student Heroine2.000.821.64
Nukige2.670.601.60
Cowgirl2.000.771.54
Defloration2.000.691.38
Background Moans1.001.381.38
High Sexual Content0.670.970.65
ADV2.000.170.33

Traits (72 total)

NameCharactersImportanceWeight
Student Council Treasurer Role23.373.70
Step Sister Role32.423.36
Brocon Personality42.033.28
Sleepwalking Engages in13.472.41
Indian Role13.232.24
Braid Hair Tie Hair13.192.21
Bindi (Mark) Body13.122.16
Student Council Secretary Role13.122.16
Twin Buttjob Engages in (Sexual)13.002.08
Twin Sister Role21.842.03
Multiple Braids Hair12.861.99
Sleep Sex Engages in (Sexual)12.851.97
Kneepit Sex Engages in (Sexual)12.751.91
Twin Boobjob Engages in (Sexual)21.741.91
Student Council Vice President Role12.621.82
Band-aid Clothes12.531.75
Hair Loopies Hair12.491.73
Full Sister Role21.571.73
Older Sister Role21.541.70
Braided Crown Hair12.441.69
Half-Japanese Role12.321.61
Student Council Member Role12.321.61
Foreigner Role12.291.59
Younger Sister Role21.431.57
Blackmail Engages in12.241.56
Swimsuit Clothes12.221.54
Spats Clothes12.171.50
Strapless Dress Clothes12.151.49
Knee-high Socks Clothes21.341.47
Revenge Engages in12.121.47
Boobjob Engages in (Sexual)31.051.45
Virgin Sex Engages in (Sexual)50.811.45
Sly Personality12.081.45
High School Student Role50.791.42
Amber Eyes31.011.41
Student Council President Role12.021.40
Clumsy Personality11.921.33
Cousin Role11.891.31
Tsundere Personality11.861.29
Reverse Spitroast Subject of (Sexual)11.831.27
Yukata Clothes11.821.26
School Uniform Clothes50.691.24
Dark Body11.771.23
Deredere Personality11.751.21
Olive Body11.681.17
Thigh-high Stockings Clothes21.001.10
Garter Belt Stockings Clothes11.591.10
Waist Length+ Hair30.781.08
Teen Body50.591.06
Sidehair Hair20.961.06
Energetic Personality11.521.05
Smart Personality11.501.04
Incest Engages in (Sexual)11.461.01
Bikini Clothes11.451.01
Slim Body50.550.98
Blond Hair20.880.97
Hairpin Clothes11.370.95
Brown Hair30.680.94
Childhood Friend Role11.240.86
Ribbon Tie Clothes11.220.84
Cunnilingus Subject of (Sexual)11.170.81
Ribbon Hair Tie Clothes11.160.81
Handjob Engages in (Sexual)11.150.80
Ponytail Hair11.100.76
Tareme Eyes11.070.74
Green Eyes11.010.70
Straight Hair10.960.66
Pale Body40.370.60
Blue Eyes10.800.55
Blowjob Engages in (Sexual)10.750.52
Long Hair10.750.52
Short Hair10.610.42