Rule 34 Dev - 1boy 2015 abs ambiguous_gender animal_genitalia anthro better_version_at_source big_dom_small_sub bondage bound camera chair claws coat collar comic crying cuntboy cuntboy_sans_balls dragon drooling experiment fangs forced fully_bound group herm hermaphrodite hooks horn human intersex lab laboratory machine male male_focus maleherm mammal metal multi_genitalia muscular navel nude pain pecs penis penis_emerging_from_pussy pussy reptile saliva scalie science sharp_teeth size_difference slit slit_insertion slit_penetration slit_play solo_focus spread_cloaca spread_legs spreader_toy spreading spreading_slit tears teeth testing tongue tongue_out 竜族生態調査班|2828596624