The Hyakki Gokuen is a hyper-stylized 3D anime-style weapon, resembling a traditional Japanese tessen (iron fan) with exaggerated proportions and intricate detailing. The fan's ribs are crafted from a dark, polished metal with glowing crimson accents that pulse with energy, while the panels are made of a translucent, iridescent material that shimmers with a spectral aura. The edges are sharp and angular, designed for both slashing and defensive maneuvers, with engraved kanji symbols that glow faintly when activated.