Rule 34 Dev - 2015 5_fingers abs anal anal_fingering anthro anthro_on_anthro ass back_muscles bear black_nose blush bottomless brown_fur canine clothed clothing duo erection fellatio fingering fingering_self fundoshi fur grey_fur humanoid_penis husky japanese_clothing juuichi_mikazuki male mammal masturbation morenatsu muscular muscular_male oral penis precum pubes red_background sex simple_background tetsuo_oshiba underwear underwear_aside yaoi|2738773712