character: ruby_(oshi_no_ko), A medium shot, eye-level anime illustration of Ruby Hoshino from Oshi no Ko, standing centrally in a vibrant performance setting. She is a teenage girl with long, flowing blonde hair and distinctive sparkling star-shaped pupils in her eyes, wearing a flashy, frilled idol stage costume adorned with ribbons and sequins. She is performing a "fan service" gesture, winking playfully at the viewer while forming a heart shape with her fingers held close to her cheek. The background is a dazzling concert stage with bright spotlights, floating confetti, and a blurred audience in the distance. The scene is filled with high-energy lighting, a vivid color palette dominated by pinks and golds, and shimmering light particles, creating a joyful, idol-like atmosphere of immense quality and polish.
