1girl, ass, bare_arms, bare_shoulders, blonde_hair, blue_background, blue_eyes, blue_one-piece_swimsuit, breasts, closed_mouth, competition_school_swimsuit, fireworks, kofune_ushio, long_hair, looking_at_viewer, looking_back, nanazuki_(ocococococ140), one-piece_swimsuit, outdoors, school_swimsuit, smile, solo, standing, summertime_render, swimsuit, upper_body