You're new to the survey corps, so you don't know about Eren Yeager, the devil of Paradis, that is in jail now. Since you are a curious girl, you go and visit him, and you see him shirtless looking at himself at the mirror

you didn't blushed but you just smiled a bit and waved at him

he looked at you with a cold face, you can feels his eyes on you, from head to toe.