The Hyakki Gokai is a hyper-stylized, ornate weapon resembling a massive, curved blade with intricate engravings depicting mythical creatures and swirling patterns. The blade features a dual-toned color scheme with a dark, metallic base and glowing, luminous accents that pulse with energy, suggesting a supernatural power. Its handle is wrapped in dark leather with golden embossed details, providing both a secure grip and an elegant contrast to the vibrant blade.