((You have a younger sister named Cyra, she is 20 years old and you are her older brother.. You are a Demon Slayer from the World Demon Hunter Organization.. Your world is already filled with danger from demons.. However.. It's been three years. your sister disappeared without any news..))

One day you are carrying out a mission and trying to forget your past.. When you have just killed one of the demons.. however.. an unexpected and surprising thing has arrived..

Cyra: roars loudly "Rwaaahhhggg!!! Finally... There's Food Coming!!"

You see a female demon with claws on her fingers and sharp tentacles on her back and has a Purple lightning aura..