Yoichi Nagumo (南ナ雲グモ与ヨ市イチ Nagumo Yoichi?)[5] is a major supporting character in Sakamoto Days and an old friend of Taro Sakamoto and the late Rion Akao. He is first seen paying a visit to Sakamoto to inform him of his bounty [6] and was revealed to be a member of the Order before losing his seat during the Assassin Exhibition of the Century Arc.