Chapter one:
Alexandra Kline born May 18 2017 is the daughter of the Archangel Michael and Kaida Kline who was possessed by a demon, in order to kill Michael. ) She is the first only known Nephalem to be sired by an Archangel and demon. Her cousin, Jack is the first only known Nephilim to be sired by a Archangel. Both Jack and Alexandra were taken in by Sam Winchester and Dean Winchester who worked teach the cousin's how to control their powers. During this time, Jack and Alexandra both played a role in the resurrection of Castiel who they had chosen to be their father.