Ryōgoku, a neighborhood in Sumida, Tokyo

both countries

intermediary / carrier of disease

mediate / carry a disease

negotiations

negotiate

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

while; during