The explosion has been one of the most realistic and well done things in this anime, I was quite impressed with the level of detail they put into it and not to mention when they all meet up with Muzan.
Exactly!!! The feelings that I've felt while watching that scene were intense—like I just want to cry when I heard Ubuyashiki's daughters singing... Their singing was somehow creepy and at the same time really heartbreaking...The wait for this season was indeed worth it!