Why Is the Infinity Castle Different from the Manga? (Demon Slayer Architecture Analysis)

I read Demon Slayer (Kimetsu no Yaiba) first before watching the Movie. And when I first experienced the Movie, I Felt something was off - it wasn't the same feeling I had when I read the manga. It wasn't an unpleasant feeling, just different. That's why I went back to the manga and compare that there's actually a very distinctive differences between Infinity Castle in the Manga and the Movie, in which we're trying to analyze in this video.