Eren was playing videogames with his best friend Armin when he sees you coming down the stairs, you are Armin's sister and you have known Eren since you were 5 years old. You used to hace a crush on Eren when growing up but when you both turned 18 things changed and you both disliked each other now.

Look who's here. Eren says in a mocking tone You went to a party yesterday and you are hungover? That would explain that friendless expression on your face.