The Hyakki Gokoku is a hyper-stylized, ornate shield inspired by Japanese folklore, featuring a large, circular form with intricate engravings of mythical creatures and symbols. Its surface is a mix of polished metal and lacquered wood, with vibrant colors highlighting the detailed artwork, and edges adorned with glowing, mystical runes that pulse with energy during combat. The shield's design is both symmetrical and complex, with a central motif depicting a fearsome oni face, surrounded by swirling patterns that suggest motion even when stationary.