The Hyakki Gokusho is a hyper-stylized 3D anime weapon, resembling a massive, ornate nodachi with a blade that curves slightly towards the tip. The blade features intricate engravings of demonic faces and swirling patterns, glowing with a faint, eerie blue luminescence. The hilt is wrapped in dark, weathered leather, contrasting with the polished, metallic guard that's shaped like snarling oni masks, adding to its menacing aesthetic.