FURVERT!

3_toes abuse angry anthro avian avian_feet bdsm beak berdly bird blue_body blue_feathers blush bodily_fluids bondage bottomless bound butt chain clothed clothing cuff_(restraint)deltarune duo eyewear feathers feet glasses handcuffs hi_res lightner lying male metal_cuffs on_side presenting presenting_hindquarters restraints shackles shadow shirt silhouette solo_focus sweat sweatdrop tail tail_feathers talons toes topwear undertale_(series)unknown_artist yellow_beak