The Tutorial Is Too Tough! - Ch. 150

[MangaDex]

 

[PyroclasticFlow]

what a weird ending. the tone and progression of this series is always all over the place

 

[Kaldrak]

I think these tutorial stages can be copies of worlds that exist, with the stage set for the player interactions, and they likely usually cease to exist after the player clears the stage and leaves. The original worlds the copies are based on are probably still there, though.