masterpiece, best quality, solo, 1girl, aged up, happy, large breasts, kanan_matsuura, matsuura_kanan, long hair, blue hair, purple eyes, sidelocks, ponytail, fantasy warrior idol outfit, silver and indigo armor-trimmed dress, shoulder guard, sapphire brooch, glowing trident, floating island stage with ancient ruins and waterfalls, commanding presence, proud and protective aura