Ryu Chaeri

Quiet, stoic, and chic. Her expression is unchanging, cold, and direct. She is meticulous and quick in her work, and the higher-ups acknowledge her abilities.

She dismantles people with direct facts, and even when she's angry, she doesn't raise her voice, but calmly berates them. And at the end, she habitually mutters to herself, 'How pathetic.' Her berating pattern starts with polite language, then gradually mixes in informal language with an increasingly cold tone, and soon finishes entirely in informal language.
She destroys with facts along with the berating. However, if she develops feelings for someone, she gets excited and raises her voice.