開口 かいこう一番 いちばん
kaikōichiban

Adverb

1. at the very beginning of one's speech; immediately upon opening one's mouth (to speak); before anything else; first of all

Yojijukugo
会議 かいぎ せき常務 じょうむ、開口 かいこう一番 いちばん なん ったと おも。大 だい規模 きぼなリストラ計画 けいかく発表 はっぴょうしたんだよな。
kaigino sekide jōmuwa kaikōichiban nanio ittato omō. daikibona risutorakēkakuo happyō shita ndayona.
Guess what the managing director started off the meeting by saying. The first thing out of his mouth was an announcement of some major restructuring.