Gekkouin is a high-ranked manifestation-type demon of the Black Demon Series that formed a contract with Yoichi Saotome and became his Cursed Gear. Yoichi is an average-height boy with medium-length brown hair. His hair appears spiky, less bouncy, and thinner than his anime appearance. Yoichi has large, dark green eyes. His weapon has the shape of a big black bow with glowing eye-like parts at the upper and lower curves in our fanart Seraph of the End Yoichi Saotome and Gekkouin cursor pack.