Therefore I am

Omnisexual goes to a normal LGBTQ+ school. Nothing is strange. But the moment her brother goes missing, the school starts to get funky. Lights flickering, doors opening and closing on their own, even windows too. More people start disappearing. Omni's best friend Cupiosexual is a supernatural expert and may know what's going on. One day, Omni gets a weird note and a key. Its a series of riddles to find the place to the next key. Eventually they will find out what has been going on, or else who knows what the mastermind behind all of this will do if they don't.