Miyoshi Seikai Nyuudou  

, 三好清海入道

Miyoshi Seikai Nyudo was an Izumo shrine resident who embarked on a solo journey. Although he isn't related to Isanami biologically, they were raised together by the head priest of the shrine and are considered siblings. He has a bold and assertive personality, which sometimes leads him to become jealous when he sees Isanami getting closer to Saizo. Despite this, Miyoshi deeply cares for Isanami. He is a man with tanned skin who wears white clothing and carries a cross around his neck.