Angel is a girl who got into the electronic afterlife in the same way as the main part of the game characters - after her death.
The "Higher" caste celebrated her success during her lifetime and gave her the opportunity to work as an angel-demon for the Afterdeath Inc. corporation.
Your main job is to distribute the electronic souls that came to you among the three afterlife cities: Lightwood, Clinwood and Darkwood. Try to do your job with high quality, because the earning of finances ("darlings") and the reputation necessary for the purchase of "Points of Influence" depends on the correctness of the decisions you make.
The main task is to prove to the "Higher" caste that you are a capable worker and worthy to get into their ranks. It remains only to find out the entry requirements and start your working path through millions of souls, both innocent and randomly sinning during their lifetime in games, NPCs...