pixel art, pale glowing butterfly flickering gently in a misty garden, its brightness shifting softly, faint petals around, misty violet background, fleeting unstable emotion, delicate low saturation, no captions, no bottom bar, no overlay text, no decorative text elements, clean empty background, 16bit, lo-fi retro pixel, soft muted colour palette, subtle film grain, cinematic soft twilight light, melancholy quiet atmosphere