The Hyakki Gokoku is a hyper-stylized, ornate weapon resembling a traditional Japanese tessen (iron fan) with exaggerated proportions and intricate detailing. Its blades are crafted from a gleaming, metallic material with a polished finish, featuring engraved patterns of mythical creatures and floral motifs that glow with a faint, otherworldly luminescence. The handle is wrapped in dark leather, providing a stark contrast to the vibrant, colorful energy that pulses along the edges of the fan when in use.