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5:3 alien ambiguous_penetration armor black_body bodily_fluids breast_milking breasts butt claws detailed_background duo fangs female from_front_position halo_(series)headgear heart_symbol helmet human human_on_humanoid human_penetrating humanoid interspecies lactating leg_wrap looking_pleasured lying male male/female mammal master_chief microsoft missionary_position muscular muscular_male on_back open_mouth open_smile penetration sangheili sex smile teeth tongue tongue_out weapon xbox_game_studios yellow_eyes