Generate a close-up portrait of a chibi character, showcasing an adorably expressive crying face. The character should have an oversized head, with large, glistening eyes brimming with welling tears, and a single, prominent tear visibly tracing a path down a softly flushed cheek. The lips are to be gently pouted and exhibit a subtle tremble, conveying a sweet and innocent sadness. Render the illustration in a vibrant, highly detailed kawaii art style, characterized by soft, rounded features and vibrant colors. Employ soft, gentle lighting to highlight the character's emotional expression. The background should be clean, minimalist, and out of focus to ensure the primary focus remains on the character.