Kyūjitai form of 宗主国

suzerain (dominant nation or state)

the last volume in a two- or three-volume set

influence, effect

to influence, to have an effect upon

a suzerain (a kind of leader) / the head of a house, lineage, or clan / a leader of a lineage in the ancient Chinese feudal system

he / distal demonstrative, something far off removed from both speaker and listener: that / boyfriend

distal demonstrative, something far off removed from both speaker and listener: that, yon / particularly, male personal third person pronoun: he / by extension from he: boyfriend

he; boyfriend

long / (time) long, lengthy