This foam sword is a replica of the one carried by Kaigaku in the hit anime Demon Slayer. Like his brethren, Kokushibo, Kaigaku carries around a modified version of a standard Nichirin Sword he used when he was a Demon Slayer that is made from his flesh and blood.[20] However, unlike Kokushibo's katana, his katana isn't heavily distorted and is nearly identical to his original one. His flesh katana has a black lightning pattern on both sides of his yellow tinted blade along with a black and gold handle. Officially licensed.