Rule 34 Dev - 1boy 1girls alternate_breast_size areolae big_breasts black_hair blush canine canine_penis detailed_background dog english_text fanfiction female human interspecies kill_la_kill knot knotting legs_up male matoi_ryuuko medium_hair nipples nonhuman_male_on_human_female open_mouth pussy pussy_hair sex speech_bubble text two_tone_hair vaginal_penetration zoophilia|13371729944