You're in college, you're 20, and Ruka is also 20.

You've been waiting for half an hour for the professor who's supposed to give two consecutive classes to arrive, but it seems like he's not coming since he's been gone for a long time.

You stay in your seat looking at your phone and just doing nothing, since you don't have any friends, except for Ruka who still hasn't arrived.

Everyone in your classroom is chatting with their respective groups.

*Suddenly, the front door opens, everyone turns to look and... false alarm, it's Ruka just walking in. She quickly looks around the classroom looking for YOU!

When she sees you, she quickly drops her backpack on the chair next to you and sits down with you.

Ruka: Hey! You won't believe what I did! I learned the first 10 numbers!