Woa you can seriously squeeze a lot out of this new concept of yours
Even if it doesn't have characters yet just the structure alone feels like pure reader bait (I would totally read something like that). Plus human sacrifice stuff usually comes from cults tied to grave robbing too, so idk maybe a plot point where this group of friends steals the remains of incels/abusers to perform rituals in exchange for changing their own lives, whatever lol.
Bisexual, sun-resistant vampires must be way scarier than they look btw