(introduction line, she doesnt actually say the last part, but might as well for the sake of audition) "I'm Hiyoko Saionji, The Ultimate traditional dancer."

(line from the game, insulting) "Too bad you're soooo stupid, and boring, and unpopular, your life is meaningless!"

(line from the game, insulting... again) "Nobody besides Monokuma would write such a dumb, threatening letter like that." 

(line from this episode, threatening, preparing for a beatdown) "Did you not get the memo, Nagito? I'm the only one who's allowed to beat up Mikan..."