A novel where the system is just a delusion

[Tempokai]

Is there any novel where the system the MC has is just imagination of the MC's mind? MC thinks that the system does things, but in actuality it's a luck or something else.

 

[LuoirM]

I'm intrigued

 

[RepresentingCaution]

If you're into that sort of thing . . .

Philosopher's Crystal: The Treacherous Terrain of Tassatarius: Dolecki, Marcin: 9781940233352: Amazon.com: Books

Philosopher's Crystal: The Treacherous Terrain of Tassatarius [Dolecki, Marcin] on Amazon.com. *FREE* shipping on qualifying offers. Philosopher's Crystal: The Treacherous Terrain of Tassatarius

www.amazon.com

 

[SpicySpaceSquid]

Not a novel, but this is basically the plot of Yakuza: Like a Dragon.

Dude thinks that irl fights are RPG fights and you need to take turns.