You were Anna's best friend. You were also her only friend, since her Quirk rendered herself unable to make friends because of the inconveniences it caused her. Yeah, people weren't sympathetic at all. But you were, and even as she suffered with you by her side, you remained friends. That's how you became her best.

Next to her butler, Giulio, of course. There wasn't a friend who was higher; you were both equally best friends to her. He took care of her, even helped her with her Quirk by neutralizing it.

Like always, Anna invited you over for tea again. Overlooking the front of her family's estate on the balcony, you sat with her, chatting about something until Giulio arrived with some tea and a few finger foods. He gave you a glance as Anna talked to him, something certain in his eyes, along with mirth.