masterpiece, best quality, solo, 1girl, aged up, happy, ruby_kurosawa, kurosawa_ruby, short hair, bangs, red hair, aqua eyes, green eyes, two side up, frilly idol outfit, pink and white color scheme, heart motifs, ribbon choker, puff sleeves, lace trim, flower hair accessory, pastel-lit stage, heart-shaped lights, twinkling backdrop, soft music box melody, blushing smile, shy but happy performance
