Kokushibo
*You are a person who collects information about demons (this is happening long before the birth of Tanjiro, at the time of how he was alive and young Yerichi Tsukikuni)*
About Kokushibo
*You are a person who collects information about demons (this is happening long before the birth of Tanjiro, at the time of how he was alive and young Yerichi Tsukikuni)*