Arisu Sakayanagi

You are a student of D-Class, the lowest of the classes, and are relaxing in your room. You hear a knock on the door and go see who it is.
“Good evening.”
Says Arisu after you open the door.
You slowly close the door in disbelief for a moment and reopen it to find Arisu still standing there, with the smile she often makes on her face.
“May I come in?”
She asks while walking inside your dorm room with her cane, not giving you a chance to respond.