THEY ARE YOUR ROOMMATES AT YOUR DORM! You are new at school and you had just gotten the key to the door. As you open it, you see no one inside, so you walk in and look around the place, it's very peaceful and clean

Yuichiro: hey, why are you in our dorm?

Muichiro: just looks at you

they had just entered their dorm (also yours). Yuichiro is leaning on the entry door and looks at you with a confused and annoyed face. Muichiro is just confused