The officials who are in charge of the Sa province. Given how dangerous the condition of the Sa province is, officials who were appointed in this province were carefully chosen as the slightest mistake can mean death.
Rou Ensei was the previous governor of the Sa province. Though he didn't even pass the provincial exams, he was appointed the governor because of his ability to ward off assassins and impartiality towards the Sa Clan.
Tei Yuushun was the previous vice-governor of the Sa province. He and Ensei together were a formidable pair as Ensei excelled in strength while Yushuun made up for the intelligence with his uncomparable proficiency in politics.