Rule 34 Dev - arm_hair axe back_view beard dark_hair facial_hair futari_solo_camp gen_kinokura hairy_arms jeans looking_back looking_back_at_viewer male male_focus male_only masculine muscular muscular_male no_visible_genitalia official_art shirtless solo solo_male sweat sweating sweaty_back thick_eyebrows topless towel towel_around_neck yuudai_debata|6847750488