Well, after long break another group picked this up and it's a Swiss Army Knife.
We went from "Spirit Inviter" then "Spirit Orison" to eventually "Spirit Beckoner" or "Beckoner", it kinda lost it's charm, think "Spirit Whisperer" would be the best translation...
This chapter is just a rehash technically, Walter point of view isn't something revolutionary enough to enrich the story.
Thanks for the translation.