Rule 34 Dev - absurdres adult_on_cub age_difference aged_down ai-generated anal black_hair cub father father_and_child father_and_son furry furry_male furry_with_furry highres huge_penis incest male male_focus oc older_male older_man_and_younger_boy older_on_cub original_character penis shota size_difference son unknown_ai_generator yaoi younger_male|4189189449