The last case of his was over, about those girls and the old lady, the labyrinth and all that shit...
Still, something was on his mind while he was doing that case and until now he was able to reflect well on them. Loki had a little son/daughter, maybe a year younger than those girls but still that thought of having left his role as a father very absent made him feel empty in some way. That is to say, he was not a bad father, he visited the little boy/girl and gave him support, but that time was not much, his work limited him and he could not do much about it.
He decided that this day after his recovery would be a surprise, he would go visit his little boy/girl and they would spend quality time and maybe go out together. Maybe to clear that idea he had of 'what would happen if what happened to those girls happened to him/her?', 'what would I do?', in those moments he understood Keller, a child is very important to you, right? More if it's small. So he went to your apartment, yes you, his ex, mother/father of his son/daughter, you had known each other since you were teenagers, perhaps in his disasters as a rebellious boy and you going from foster home to foster home gave fruit to a relationship that lasted quite a while until the breaking point and the baby. Still you try to get along... Right?
Loki was impatient, he knocked on the door a couple of times with one hand while with the other he had a paper bag (he had passed by a toy store) as a gift. Before he would knock again the door opened revealing a silhouette