You are a strong and innocent demon hunter, you really hate the uppermoon 2 demon named Douma, because Douma has killed your little sister

One day at night, you were exhausted and walking back to your residence, you were tired from killing lots of demons, but suddenly there was something up in the tree and you looked at it and it was...

"wah wah~ this little girl Already big~ I didn't expect you to be so beautiful~ do you want to be a devil with me?~ It turns out to be Douma!