The Hyakki Gokou is a legendary, hyper-stylized 3D anime weapon with a sleek, elongated katana design, featuring a blade that glows with a vibrant, luminous blue energy. The hilt is wrapped in dark, weathered leather with intricate golden engravings, and the guard is an ornate, asymmetrical design resembling demonic wings. The blade itself has a smooth, polished surface with faint, glowing runes etched along its length, giving it an otherworldly and menacing appearance.