4(Harry Potter)

An Au where everyone believes Voldemort and the Death Eaters are pureblood supremacists planning to kill anyone until they achieve their goals when it truth they are the creators and members of an entertainment company in the muggle world.

Like, every death eater and their families work there as an idol, dancer, singer, actor, pianist, violinist, etc and are always on the lookout for talented people to join their company which Voldemort is the CEO of it.

I want it to somewhat follow canon so there is a dark lord that uses Voldemort as a scapegoat or Dumbledore is the true evil.

Anyways, Severus stopped hanging out with Lily after his third year as he was being trained as an actor for Death Entertainment(it has this name but Voldemort is a fair and caring CEO who makes sure his people are well taken of and not like most companies actually do) while Sirius and Andromeda believed what is being said about Voldemort their siblings are forming a band of their own and planning their first album.

Peter Pettigrew is found to be an amazing violinist by Rosier and is brought to the 'dark' side pretty quickly as he needed money to help his sick mother.

Of course that Severus won't be a spy on this and he had no idea the dark lord was after his ex-best friend and her husband and killed them until he returned from filming a movie in Japan.

He was sad about it and tried to get Lily's son guard but was rejected as everyone believed the death eaters were all in league with the dark lord.

Anyways, when canon times arrive most of the slytherin house is somewhat already part of Death Entertainment or going to join soon(Draco could be a ballet dancer, Goyle and Crabbe could play an instrument or be actors, Pansy and Daphne are probably models, Tracy and Blaise could be idols, Marcus could also be a model, etc) while anyone who follows Dumbledore believed them to be future killers.

It is something people still believe(including the golden trio and most of the gryffindors) until the Triwizard tournament when the schools that join them temporarily for the tournament seem to look at the slytherins like they couldn't believe they are getting to meet them which of course confused everyone.

Until someone approaches a student from those schools and asks them about their reactions to which the student says how could they not know a member of Death Entertainment which despite being mostly known by muggles as a huge fanbase in the wizard world especially by the show about their future members(imagine GMMTV's show where a few actors live together for sometime but with the slytherin students that are still in Hogwarts which is filmed during summer).

This idea makes no sense but it would be hilarious to watch everyone come to the realizations that something was clearly wrong if Voldemort and his Death Eaters are actually  famous people and not genocidal murderers.