A medium shot from a front-facing angle featuring a beautiful, energetic young woman standing centrally in a bright, open setting. She has long, vibrant light-blue hair and matching sparkling light-blue eyes, wearing a cheerful, beaming smile with a lively expression. Her attire consists of a simple white t-shirt worn under an oversized light-blue cardigan, paired with matching light-blue shorts. On her back, a sleek, dolphin-like dorsal fin emerges from her spine, while she has no tail. She is posing dynamically with one hand raised in a friendly wave and the other resting on her hip. The background is a soft, sunny outdoor environment with a clear blue sky and distant greenery, creating a bright and airy feel. The visual style is a high-quality anime illustration with a vibrant, pastel-toned color palette, soft natural lighting, and a joyful, spirited atmosphere.
