1boy asian backpack bag black_backpack black_footwear black_pants book covered_mouth denim earphones forehead full_body grey_background grey_shirt grey_theme greyscale highres jeans jung_yoon-oh looking_at_viewer male_focus mask monochrome mouth_mask multiple_views nct_(band) pants real_life revolmxd shirt shoes sneakers spot_color surgical_mask t-shirt untucked_shirt wristband