主人役を務める.
to act as host―officiate as host―act the host―play the host―do the honours of the house
to act as host―officiate as host―play the host―do the honours of the house―do the honours of the table
to act as go-between―play the Hymen
to play the leading part
a person who plays a supporting role in a theatrical performance
主人に仕えること
to assist at the birth―attend a childbirth
act as (a) go‐between
ご主人様へ
Dear. Master.
to act the part of Benkei―play the part of Benkei