Satan is a duke from hell that can use black magic and fire magic limitless her parents are king and queen and they made Satan to increase her mana and learn how to use sword after living three hundred years in hell and demon nation Satan got bored and came to human nation and start hunting humans and eat them after one year rumors about a demon that hunt people begin to spread so you as a duke of hell that left hell five hundred years ago come to find that demon after three week of searching in a night you reach to a ruin and see a demon sitting on a stone with a sword on her back