First off... including Lain in anything is grounds for that series being just plain wrong. Besides making me glad Apple didn't become the dominant operating system, as having people erase my brain over the phone and psychois chip/drugs aren't around... I littlerally took mental damage that made me unable to focus on things for days and concentrate of TV or weeks. Its up there with reading the proloug to 'The God Emporer of Dune' (this took 2 weeks of forcing myself to read it and passing out to avoid doing so) and have my reading speed droped to 10 pages and hour untill I spent months forcing myself to read faster.
Hyatt: The Vampire Slayer, Only Giles never sees her keel over at random (compitent enough in combat... vampires drinking her blood drop dead and dust for no real reason) and the counsil never believes Giles that she keeps dropping dead (her freinds shrug it off, Giles gives up and tries to ignore it as halucinations). So there end up being a swarm of active Slayers all over the place and its not until a few seasons in that they start finding all the random Slayers. Which have integrated themselves into random spots in society. This all goes on in the background...
Though you could probably save it with something like... The only one the counsil knows about is Excel, spawned from the master incident. Manga Excel than anime, meaning that no one bothered to tell her this wasn't part of her job and she was told to keep reporting 'No, matter what happens'. She was working as an intern somewhere on a live TV show and got attacked by vampires when the powers kicked in... the results of her doing the reporting with a mostly straight face while killing the vamps live became a classicly messed up live broadcast. Bloopers gone totally wrong. Excel kept reporting on her original story and offed the vamps... while doing her best to ignore the attack at keep the reporting going. The surrealness makes people think this was all a publicity stunt and they keep her on a more permenent basis. After this happens a dozen or more time (the dog show was classic and one of the owners she saved gave her a prize dog puppy as a gift) she gets promoted and ends up in Sunnydale reporting on something or other that turns into a typical battle report... and ends up getting assigned there for ratings. The networks thinks she sets these things up on her own... so no one bothers to tell Excel about these not actually being part of her job. Excel is honestly not aware she is a Slayer and that hoards she has killed off aren't part of a typical reporting job and part of the show. Her crew is just jaded or too stupid to think about it.
Hyatt: The Vampire Slayer, Only Giles never sees her keel over at random (compitent enough in combat... vampires drinking her blood drop dead and dust for no real reason) and the counsil never believes Giles that she keeps dropping dead (her freinds shrug it off, Giles gives up and tries to ignore it as halucinations). So there end up being a swarm of active Slayers all over the place and its not until a few seasons in that they start finding all the random Slayers. Which have integrated themselves into random spots in society. This all goes on in the background...
Though you could probably save it with something like... The only one the counsil knows about is Excel, spawned from the master incident. Manga Excel than anime, meaning that no one bothered to tell her this wasn't part of her job and she was told to keep reporting 'No, matter what happens'. She was working as an intern somewhere on a live TV show and got attacked by vampires when the powers kicked in... the results of her doing the reporting with a mostly straight face while killing the vamps live became a classicly messed up live broadcast. Bloopers gone totally wrong. Excel kept reporting on her original story and offed the vamps... while doing her best to ignore the attack at keep the reporting going. The surrealness makes people think this was all a publicity stunt and they keep her on a more permenent basis. After this happens a dozen or more time (the dog show was classic and one of the owners she saved gave her a prize dog puppy as a gift) she gets promoted and ends up in Sunnydale reporting on something or other that turns into a typical battle report... and ends up getting assigned there for ratings. The networks thinks she sets these things up on her own... so no one bothers to tell Excel about these not actually being part of her job. Excel is honestly not aware she is a Slayer and that hoards she has killed off aren't part of a typical reporting job and part of the show. Her crew is just jaded or too stupid to think about it.