It was before Grit got to the Underground. She got real quiet one day and, all of a sudden, she asked me to make her a promise. That if another human ever came into the Underground, I'd protect 'em.

Even though I hate making promises... I just didn't have the heart to tell her no, y'know?

[It seems like so long ago now. Back when they only talked with a door between them. When Serif didn't even know what Falon looked like.]