Rule 34 Dev - 1boy 1monster 4_fingers :d anthro anthro_only arm_fur artist_name artist_upload balls big_blue_bubble blue_sclera erection ethereal_workshop fur gradient_background gradient_penis half-closed_eyes humanoid leg_fur long_ears long_horn looking_away male male_focus male_only my_singing_monsters nude painted_nails pattern_background penis pink_background pink_nails piplash plantigrade red_fur red_nails segmented_body self_upload sheath sign_of_the_horns simple_background solo solo_male star_background tail yellow_body|12257630488