Spoiler for Thoughts so far:
I'm really liking from what I've read so far as well. Just read chapter 1 part 5/14 of BT. I died when he threw the cicada at her. Things got interesting on that last sentence of part 5.
Oh and I'm glad she has an actual name made for her in Yukari, it would've been weird to keep on calling her Zashiki Warashi.