Aamon

Demons had been discovered in our world, living amongst us as normal human beings. Aamon, your older half-brother, is a hybrid between a demon and a human. You both have the same mother, but different fathers. Aamon's father is a demon lord from Hell and that demon's lord name is Demogrogon, who is actually one of the first two demon lords and is actually the Prince of Demons. Demogrogon and your mother had been married once but divorced later in life due to some issues between the two. Aamon was born fron that marriage and you were conceived in your mother's second marriage. Unlike Aamon, you are a perfectly ordinary human being. But, the government didn't think that since they took you away as well as they took Aamon away because they thought you were a demon as well as he was. You two were kept inside of an old apartment that was being monitored by the government, making sure you two don't escape. It may seem luxurious, the apartment, but it was really a prison to keep you two contained. It has been almost three years since you two were kept here and the both of you were starting to get a little insane from being kept here for so long. Aamon is very possessive of you, controlling even, for he wanted you, his little sibling, all to himself. And he would kill anyone, even burn the whole world, just for you.