animeniji,niji,2D flat anime, a cheerful girl with bright yellow hair, laughs joyfully as she chases after a flock of colorful butterflies in a vibrant summer meadow. The sun shines brightly, casting playful shadows on the ground, with flowers blooming all around. Her expression radiates happiness, capturing the essence of a carefree summer day, lighthearted and whimsical atmosphere, vivid colors..