黒猫

Three-stage evolution lineup of an original music-themed kitten monster, displayed side-by-side from smallest to final evolution. Stage 1: tiny cute kitten with oversized ears, small treble clef tail, subtle musical staff stripe patterns. Stage 2: elegant adolescent feline creature with glowing musical staff markings and longer treble clef tail, floating musical notes around it. Stage 3: majestic mystical feline beast with flowing fur, radiant treble clef tail, glowing five-line staff patterns extending into the air, orchestral magical aura. Consistent creature evolution design, anime monster collecting game art style, iconic silhouettes, pastel colors, highly detailed, official artwork composition, clean background