I've still got the 2nd Witness book to go and at first I wasn't sure I'd keep going, but something about that world, the pacing, the tone, atmosphere, etc. Really stays with me, growing in fondness the further I am from having read it. I didn't even know if I really enjoyed Goblin Emperor at first, now I think it's one of my favourite modern reads. Never really had a relationship like that before with a series. It's nice, kinda cozy.