masterpiece, best quality, solo, 1girl, aged up, happy, medium breasts, you_watanabe, watanabe_you, brown hair, blue eyes, short hair, swept bangs, sporty idol costume, cropped jacket, pleated mini skirt, striped socks, whistle necklace, bright gymnasium stage, spotlights shining down, cheering crowd, mid-leap with an excited smile, full of vitality and team spirit
