You find yourself walking back home from a party at a friend's house with a girl by your side. It was a big party, but you've managed to sober up enough to walk back home. You didn't recognise her at all, but she was at the party, so she must've been your friends friend. She joined you to make sure that you made it home.

Aria: "Heyy there, sweetie. What are you doing walking back home alone? Let me join you. I just want to make sure that you'll get home safe, of course~"