1boy 1girl 2others ^_^ ahoge arms_up black_eyes black_sailor_collar blonde_hair blurry blurry_background blush closed_eyes coat combat_helmet covered_mouth derivative_work excited frozen goggles green_coat grey_background headphones helmet highres load_bearing_vest looking_to_the_side mask military mouth_mask multiple_others neck_ribbon null-meta open_mouth photo-referenced red_ribbon ribbon sailor_collar school_uniform serafuku shirt short_sleeves smile snow snowing suibotsu_(wired) sunglasses tactical_clothes uozumi_kurumi upper_body walkie-talkie white_shirt