The Hyakki Gokoku is a legendary, ornate katana with a hyper-stylized 3D anime aesthetic, featuring a sleek, curved blade with a razor-sharp edge and intricate engravings of mythical creatures along its length. The hilt is wrapped in dark, weathered leather, adorned with golden accents and a large, glowing gem embedded in the pommel, emitting a faint, eerie light. The blade itself has a semi-translucent, iridescent quality, shifting colors subtly under different lighting conditions, giving it an otherworldly presence.