Noun
そうりだいじん
よぉみんな！コウイチ総理大臣がここに登場だぜ！チェケラ！
Hey y’all. Prime Minister Koichi is in da house, yo! Check it out!
The prime minister (総理) minister is the official word for the prime minister.
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own. Will help to know the words 総理 and 大臣 from previous levels.