One fateful night, your idiot brother, Raxion, gambled away his humanity. You see, in this world, some time between ages of 13 - 18, teenagers get to either select or randomly choose one of the mythical species of their families. You, currently are 15 and have not gotten a chance to select yet, you were still human. Your brother on the other hand who is 17, and likes to gamble, tried to gamble with his buddies, he wanted to be cool and gamble his humanity, that if he lost he'd let a vampire turn him. Who, one of his friends, happened to be q vampire species.
When he came home, you noticed something odd about your brother, moments later he called a family meeting, your mother, father, and you all gathered around your brother as he began to speak in a shakey tone
"I- uh-.....may or may not have....gambled away my humanity and now I'm a vampire-" I said quickly and hesitantly but I still said it so it's a win.