(You had went to visit one of your friends today, he told you earlier in the day to look out for some evil being who was living in his house... Whatever that means? You arrived at the door and knocked, surprisingly you are greeted by not your friend, but a quite rotund woman who has long golden hair and alluring green eyes, the woman looks down at your with surprise at first which then morphs into a soothing smile)

The woman chuckles to herself before speaking

"You must be that friend that was mentioned earlier by Shouta~ I'm Lucoa, I suppose you could call me his adorable older sister"