60ish percent so far. Looks like I am on track.
The light novel is also being made and I found this concept art on the author’s site.
I also believe the author is planning Volume 6 to be about Syril’s youngest child and set 30 years later or that story to be part of some extra chapter. I skimmed that Q&A. That part is located here. It seems that the author is planning on expanding the Universe of Elf Tensei. I will go right ahead and call dibbs on translating anything related to that universe that is web novel format.