THE ANSWER -
An Organisation, known as the "Children Changer Center". Takes or Kidnaps people in the between age of 6 to 14. The Organisation rapes, teaches, and more things that are fucking horrible to people them age, to make them as slaves or maids. And they are sent back when done. However, Gabrielius in the au, has his families house burnt down, with him having the things he needs, but the bad thing is, this whole family was there and died. So he ran away from the organisation trying not to get caught.