Truman show in isekai

[ThrillingHuman]

So, you have gone on a great advenfure, made many friends and even more enemies (because humans suck like that), but it turned out it was all a lie!
What next? All of your friemds and enemies are still there, but now you know they are lying.

That kind of story, is what I want

 

[TASTYLEADPAINT]

I don't think that exists. You should write it.

 

[NotOriginal]

sounds like a interesting premise

 

[AuntieMaysLittleCousin]

sounds like a interesting premise

Hello there, Roxxy

So, you have gone on a great advenfure, made many friends and even more enemies (because humans suck like that), but it turned out it was all a lie!
What next? All of your friemds and enemies are still there, but now you know they are lying.

That kind of story, is what I want

The closest I could give you would be the Healer Hero's Redo, but I don't think that's quite what you're looking for.
If you don't care, though, I could store the idea and make a story out of it later

 

[IdleLucifer]

Too much drama 0/10
....
Jk it sound interesting as the psychology aspect of Isekai is often overlooked

 

[georgelee5786]

I'd read that manga

 

[NotTheAntagonist]

That seens cool, maybe you could put that god like figure that lots of isekais have and are responsible for the summoning of the protagonist like the master mind behind everything

 

[J_Chemist]

If it doesn't become a massacre, I don't want it.

 

[KrisVFX]

So, you have gone on a great advenfure, made many friends and even more enemies (because humans suck like that), but it turned out it was all a lie!
What next? All of your friemds and enemies are still there, but now you know they are lying.

That kind of story, is what I want

The only way I can see this happening is through Virtual Reality. The mc somehow gets stuck in VR, thinking he got summoned into another world. But in reality, he is in a simulation played by many actors who react with him or NPC that is computer generated.

 

[TheEldritchGod]

Well, see, the issue is why?

If it's VR, then why wouldn't everything be staged?

What you need is like a God who does thus to random people, a bunch, and they follow everyone and if you are boring, they kill you. So 16 contestants get picked and the show is broadcast to other universes.

Then you can mess with it. Does the audience know people just die and don't get sent home? Stuff like that.

 

[StainedGlassThreads]

Omniscient Reader's Viewpoint by Sing-Shong isn't quite an isekai and doesn't quite have it 'all as a lie', but does play with some similar themes to the Truman Show of everything the characters doing being watched by an 'audience,' and scenarios being staged for the entertainment of said audience. It also raises a lot of questions about the line between a 'person' and a 'character', whether 'fiction is becoming reality' or 'reality became fiction'.

The Warrior Returns by Narack and Fungback could also be what you're looking for. It has one character who's quite crafty, not quite aligned with the heroes or villains but rather assisting both as it suits his motives, who creates what initially appears to be the main conflict for as-yet unknown reasons, betraying people who considered him allies, screwing said allies over, and creating events that lead to millions of people getting killed.
And yet, all this seems in service of destroying a yet greater evil... if his internal monologue is to be believed. The extremely vengeance-driven protagonist is now being forced to ally with multiple former-allies and cowards, including this guy, and everyone he once truly trusted is dead.

My own story also involves the protagonist having the rug pulled out from him in a pretty major way about something he took for granted, though it's not really an isekai, and maybe not as extreme as you were hoping for. (And we're a ways off from that revelation anyways.)

...That said. That doesn't stop me from wanting to make an isekai even more like what you proposed someday. If the protagonist is completely new to the world, then that should make it incredibly easy to mislead them and lie to them about who the 'good' and 'bad' guys are, right? Yet every time I see an isekai going in that direction, the protagonist is immediately deemed 'useless' and discarded, or otherwise somehow split off from the main party, so actually it's not that they're being misled but really they're the only one who knows The Dark Truth, which is... fine. But I've seen it a lot now and am pretty unimpressed by all but one story that uses it.