Warmer and softer than the wide-eyed version — the closed, curved 'happy' eyes read as sincere joy rather than shock, making it a go-to for genuinely good news. Designers call this eye shape 'smiling eyes,' a convention borrowed straight from Japanese kaomoji culture (^_^) that predates emoji themselves.
Keywords: eye, eyes, face, grin, grinning, happy, laugh, lol, mouth, open, smile, smiling