Consider this episode to be somewhat like the heroes' party climbing a "tower" to defeat the Demon Lord 🤭. The coloring isn't back to normal in this episode, considering that the main source of the problem still hasn't been dealt with. I guess it's also a good way to dampen the impact of the gory scenes. I do have some complaints about how some scenes are being handled (don't worry it's also the same in the manga), cause it looks illogical and dumb. If things continue the way they are, it's going to be another tragedy for the Hishigata siblings. P.S. Another reference to a certain spiky-headed boy is made in this episode. Hearing about it sure puts a smile on my face.