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1:1 anal anal_penetration anthro anthro_on_anthro balls bodily_fluids dated dragon duo eyes_closed fur genital_fluids genitals gradient_background heart_symbol heart_tail hi_res hug knot knotted_penis machine male male/male mechanical_tail mythological_creature mythological_scalie mythology paws penetration penis protogen protogen_armor scalie signature simple_background sketch tail wingless_dragon