Possibility of you knowing him.

"Photo album?" Gianna asked, scooting closer to take a peek at it. "What did you want to check in that old book?" 

As she asked, her eyes focused on the pictures Arwen was flipping through. "These …" she glanced up at and continued with an awe expression. "Aren't these from your childhood?" 

"Mm-hm~" Arwen nodded with a slow hum. "It's from the days of my first school. I got these pictures at that time just to remember all the faces." 

"To remember all the faces?" Gianna didn't understand. "Why would you have to do that for that reason? I mean, if there is someone truly important, you would remember him no matter what, wouldn't you?" 

People keep pictures to save up the memories. It was the first time she had heard that someone was keeping pictures to remember their faces.