The Butterfly Mansion (蝶屋敷) —also known as the Butterfly Estate— is the manor that Insect Hashira Shinobu, successor Kanao Tsuyuri, and assistants Kanzaki, Nakahara, Terauchi, and Takada live in. The manor is often used as a recovery base for injured Demon Slayers. Assistant role obtained after any purchase towards this group, donation or apparel!