Big brother Levi x Little Sister Reader
(This is an incest book originaly suppose to be a one shot but my bestie aka SavvyMlynn convenienced me to make it into a book she also created this lovely cover if you have not already, check out her awesome books, I was also inspired by another book similar to this so check it out its called Big Brother by SirKimiku)
You are none other then Levi's little sister. He left the underground along with Farlan and Isabel leaving you to fend for your self. Your 8 year old self had to fight to live in the underground. Years have gone by and you are now a strong thug in the underground with your brothers name as your nickname since no one has seen your face. The Survey Corpse comes into the underground to seek out this thug. You are captured and taken onto the Survey Corpse and you are reunited with your big brother. As time goes by you can't help as you start to fall for non other then your big brother.