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Summary

The Ars Magna, an evil group, ravages around the world to get the Elemental Core, a secret treasure. However, there are two heroines who fight against them! They are twin sisters, Sonic Mercedes and Sonic Gisele. They transform themselves using the power of the Elemental Core and beat all their enemies up. One day, Max, the main character, and Tesla, his partner, are ordered to get the Elemental Core. "Get it within a week! If you fail, you'll lose your lives!" They don't know what to do, but they are given a homunculus called Mattel. Mattel has the Elemental Core inside his body and its battle power is higher than Mercedes and Gisele. Max successfully takes one of the twins hostage and tries to get the Elemental Core out of her. However, he can't make it. It is said that the Elemental Core belongs to people who have pure souls. "If that's true, I can get it out of her by dirtying her soul...." [From Eroge Shop]

Onsoku Hishou Sonic Mercedes ~Futago Heroine Choukyou Shirei!~ has not appeared in our Steam sample enough to calculate it's similar novels... sorry!
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Onsoku Hishou Sonic Mercedes ~Futago Heroine Choukyou Shirei!~ has not yet been read by enough users to calculate it's similar novels... sorry!
A novel needs atleast 20 votes before it's similarity is calculated.

Onsoku Hishou Sonic Mercedes ~Futago Heroine Choukyou Shirei!~ 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 (13 total)

NameScoreImportanceWeight
Falling to Evil (sexual)3.002.326.97
Superheroine2.002.575.15
Hairjob2.001.853.70
Twin Sisters as Heroines2.001.833.65
Villainous Protagonist2.001.783.57
Bukkake2.001.202.41
Pregnant Sex2.001.182.36
Group Sex of One Female and Several Males2.001.072.14
Penis Growth1.001.941.94
Suspension Bondage1.001.901.90
Bestiality1.001.831.83
Defloration2.000.761.52
Male Protagonist2.000.300.60

Traits (91 total)

NameCharactersImportanceWeight
Wax Play Subject of (Sexual)42.353.78
Familiar Role32.673.70
Anal Beads Subject of (Sexual)32.012.79
Bestiality Engages in (Sexual)22.462.70
Jitome Eyes22.342.57
Vaginal/Anal Sexual Toys Subject of (Sexual)31.742.42
Mouth Gag Subject of (Sexual)22.142.35
Suspension Bondage Subject of (Sexual)22.112.32
Multiple Tails Hair13.072.13
Ware Personality13.062.12
Sexual Blindfold Subject of (Sexual)21.862.04
Twin Sister Role21.852.04
Sex Through Wall Subject of (Sexual)12.922.02
Non-consensual Sex with Tentacles Engages in (Sexual)21.781.96
Twin Boobjob Engages in (Sexual)21.771.94
Masturbation Engages in (Sexual)31.401.94
Anal Fingering Subject of (Sexual)21.711.88
Tominagi Subject of (Sexual)31.361.88
Nose Hook Subject of (Sexual)12.681.86
Amber Eyes51.031.85
Mini-dress Clothes21.641.80
Pillory (BDSM) Subject of12.581.79
Quickie Fix Subject of (Sexual)41.081.74
Goggles Clothes12.481.72
Bunny Dress Clothes12.461.70
Orange Hair21.511.66
Sceptre Items12.371.64
Hairjob Engages in (Sexual)12.341.62
Clamps (BDSM) Subject of (Sexual)12.321.61
Twin Blowjob Engages in (Sexual)21.451.59
Anal Plug Tail Subject of (Sexual)12.291.59
Scientist Role12.271.58
Nipple Teasers Subject of (Sexual)12.261.57
Robot Role12.201.53
Female Ejaculation Engages in (Sexual)21.361.50
Whipping (BDSM) Subject of (Sexual)12.161.50
Vaginal Fingering Subject of (Sexual)31.081.49
Bukkake Subject of (Sexual)21.351.48
Boobjob Engages in (Sexual)31.071.48
Sitting Sex Subject of (Sexual)31.061.47
Ahoge Hair21.321.45
Old Type School Swimsuit Clothes12.091.45
Cyan Hair12.031.41
Spaulders Clothes12.001.39
Anal Sex Subject of (Sexual)21.191.31
Standing Sex Subject of (Sexual)21.181.29
Hidden Eyes11.801.25
Lab Coat Clothes11.791.24
Missionary Subject of (Sexual)21.121.23
Spit-roast Subject of (Sexual)11.751.21
Teal Eyes11.721.20
Footjob Engages in (Sexual)11.721.19
Sport Bloomers Clothes11.721.19
Spoons Subject of (Sexual)11.671.16
Collar Clothes11.671.15
Sweater Clothes11.631.13
Reverse Cowgirl Subject of (Sexual)11.631.13
Garter Belt Stockings Clothes11.621.12
Bondage Sex Subject of (Sexual)11.581.10
Sex while Being Pregnant Engages in (Sexual)11.531.06
Blowjob Engages in (Sexual)30.761.06
Cowgirl Subject of (Sexual)20.951.05
Green Hair11.481.03
Doggy Style Subject of (Sexual)20.921.02
Seventh Posture Subject of (Sexual)11.461.01
Earrings Clothes11.420.99
Tsurime Eyes11.380.96
Virgin Sex Engages in (Sexual)20.850.94
Pink Hair11.330.92
Red Hair11.320.92
T-shirt Clothes11.310.91
Curtained Hair11.300.90
Waist Length+ Hair20.810.89
Sixty-nine Engages in (Sexual)11.260.87
Dress Clothes11.250.87
Ribbon Tie Clothes11.250.87
Violet Hair11.200.83
Long Hair20.750.82
Trousers Clothes11.190.82
Butterfly Subject of (Sexual)11.170.81
Shirt Clothes11.160.80
Tareme Eyes11.110.77
Brown Hair20.680.75
Glasses Clothes11.080.75
Thigh-high Stockings Clothes11.040.72
Green Eyes11.020.71
Shoulder-length Hair10.920.64
Brown Eyes10.900.62
Black Hair10.810.56
Blue Eyes10.800.56
Short Hair10.610.42