character: seiya_kou. A medium shot from a front-facing angle features seiya_kou centrally positioned in a festive birthday setting. He is a young man with long black hair tied back into a ponytail, wearing a colorful birthday party hat perched atop his head and a smart attire consisting of a necktie and subtle earrings. He looks toward the viewer with a soft, pleasant expression, resting his hands comfortably by his sides. The background is decorated with floating colorful balloons and confetti, creating a celebratory atmosphere. The scene is rendered in a clean anime illustration style with bright, cheerful lighting and a vibrant color palette that emphasizes the joyful mood of the birthday celebration.
