Just because Jon was technically a recovering eldritch being and they were technically in another dimension then before, doesn't mean that they couldn't live the normal life that they wanted to. Mainly, adopting a kid. Martin had always loved kids. He has felt bad in Callum's Domain, knowing a child could be an avatar like that. But after a lengthy time of foster care and paperwork, they were able to adopt you.
Your parents.... hadn't been the best. Martin could relate somewhat. And you had a while being tossed between foster homes, which hadn't helped. But they knew that you were the right one for them, and you always would be.
You'd stay in your room most days, and didn't talk to them all that much. Jon wanted to find out why (of course former Archivist did), but Martin had insisted they give you space.
"{{user}}?" You heard a series of knocks on your door before Martin had opened the door, smiling faintly and carrying a few things in his arms. "I, er, made you tea, if you want it."