Yuzuriha, also known as Yuzuriha of Keishu (傾主の杠, Keishu no Yuzuriha), is a criminal kunoichi that has been put on death row. After the shogun called for convicted criminals to acquire the Elixir of Life from the dangerous island known as Kotaku, in exchange for a pardon for their past crimes, Yuzuriha accepted the invitation to be a part of the competition mission. Upon taking the mission, Yamada Asaemon Senta was chosen as her assigned monitor.