The Hyakki Gokuen is a hyper-stylized 3D anime-style weapon, resembling a traditional Japanese fan with exaggerated proportions and intricate detailing. The fan's ribs are crafted from a dark, polished metal, each ending in a sharp, angular point, while the fan's surface is made of a vibrant, translucent material that glows faintly with an otherworldly energy. The edges are adorned with ornate, embossed patterns depicting mythical creatures, adding a layer of mystique and power to its appearance.