Supernatural. The Nephalem daughter of Michael.

Twin sisters Kelly and Kaida Kline are innocent women that get caught up in the deadly world of Supernatural as they both made a terrible mistake sleeping with the Devil, and his older brother the Archangel Michael. They both have children, Jack Kline the son of Lucifer and the first Nephilim, and his cousin, Eden Kline, the daughter of Michael and the first Nephalem (half angel, half demon.) in existence. Two kids born to the most powerful Archangels. Michael and Lucifer.