Rule 34 Dev - anthro balls blush cupping_chin dark_sonic erection forced from_behind_position furry gloves greyscale grope handjob hedgehog humanoid_penis line_art mammal monochrome mostly_nude navel partially_retracted_foreskin penis precum reach_around scared sex shadow_the_hedgehog signature sketch smile smirk soina sonic_(series) uncut yaoi|2293779112