Young Len's parents died of the plague when he was one year old, and his adoptive parents were killed by heretics one after another when he was eleven. His hometown was bloodbathed by the heretic cult. When he was young, he and his sister Hannah were brought to the altar by the heretics to serve as "rations" for the evil god Lucifer. During the resistance, due to Hannah's death, Len's heart produced negative factors, which attracted the appearance of Lucifer, and thus gained the power of darkness, opening up a new life on the continent of Terra.
6666 Is really good