A medium shot, eye-level anime illustration of a small, cute mouse standing centrally in the frame. The mouse has soft, greyish-brown fur, tiny twitching whiskers, and large, shimmering black eyes reflecting a sense of curiosity. It is wearing a small, bright red conical birthday hat (bonete) perched slightly askew on its head, tied with a thin white string under its chin. The mouse stands on its hind legs, with its small front paws delicately clasped together in front of its chest. The background is a simple, soft-focus pastel gradient that emphasizes the character. The lighting is bright and cheerful, with a clean, high-quality digital art style featuring smooth cel-shading, vibrant colors, and a warm, celebratory atmosphere.
