Rule 34 Dev - 1boy alternate_costume blonde_hair collared_shirt cup grin highres holding holding_cup indoors kimetsu_no_yaiba long_hair looking_at_viewer male_focus multicolored_hair necktie red_eyes red_hair red_necktie remsor076 rengoku_kyoujurou shirt smile solo twitter_username two-tone_hair watch white_shirt wing_collar wristwatch|16852987593