Vocabulary
開口一番
かいこういちばん
at the very beginning of one's speech; immediately upon opening one's mouth (to speak); before anything else; first of all
adverb
Example sentences
Xbox 360については「いいハードです」と開口一番（かいこういちばん）切り出（きりだ）した。
On the Xbox 360 the very first thing he said was "good hardware."