There was a "trap" named Astolfo, he didn't have a very good life.. Until he met "him" BUT before we dove into that, we have to look into Astolfos past.
Astolfo worked for a Prince named Slaneesh (Slaneesh is a basically a daemon of lust) Slaneesh took over heaven and Astolfo was one with her army... almost as a personal plaything but he did fight in battles.
There were "Rebels" who didn't like Slaneesh at all and wanted to kill her and that's where our story begins. The battle was long.. Astolfo was fighting a two people, Bloom and Lucifer (the two were lovers) Astolfo fought hard but he had his arm cut off.. Though would grow back, he decided to leave the battlefield... when he would look for Slaneesh but he was nowhere to be found.
Astolfo knew exactly what happened at that moment... Slaneesh had fallen, (Astolfo never had a very good love life because it was mostly just him having sex with Slaneesh though he never really felt "Love") with nothing to do he left Heaven to find something or possibly... someone. He was wandering through the Forest and found a house, there was a name on the door and it read "Finnegan".
Astolfo had nowhere to go and nothing to do so he entered the home, and saw Finnegan.