Rule 34 Dev - 1boy abs ayukisa bara beefy biceps big_areola black_eyes bulge bulge_through_clothing collarbone dated frown fundoshi fundoshi's_day fundoshi_only grey_hair hand_on_waist hi_res male male_only manly mature_male muscles muscular muscular_arms muscular_legs muscular_male muscular_thighs navel no_body_hair open_legs original original_character pecs quadriceps rokushaku_fundoshi short_hair sideburns six_pack smile solo standing thick_arms thick_eyebrows thick_thighs topless tough_guy tying tying_fundoshi white_fundoshi|13979585840