Kai — Lu Yizhou's current identity — was a sentinel with three senses. He had received a warning from the President to find a guide lest he would be suspended from his duty and today, he was on his way to the Guide Association to request for help only to be called in urgently to lead a team on a rescue mission.
Growing up, Kai only had eyes for his job and never cared about finding a guide. That's also the reason why he could become a General at a ripe age of 33 when the other Generals were almost twenty years older than he was. His reputation as an imposing, adept and cold-blooded General with a success rate of 95% made others fear and admire him at the same time.
And worse, he was a dark sentinel.