Answer:
Correct answer is Daimyo.
Explanation:
After the fall of Ashikaga Shogunate in the 16th Century daimyos as the feudal lords gained a lot of authority in the country.
Khagan is a title that is not used in Japan, but rather in Mongolia or among some other tribes in Central Asia.
Terms Tumens and Batu are also connected with Monglols, not with Japan.