masterpiece, best quality, solo, 1girl, aged up, happy, ruby_kurosawa, kurosawa_ruby, short hair, bangs, red hair, aqua eyes, green eyes, two side up, seaside idol outfit, sailor-inspired dress, blue ribbon tie, seashell accessories, anchor motif, boardwalk stage near the ocean, summer sun glinting off the waves, gentle breeze, cheerful and sunny performance, shy excitement in her eyes
