Note that this is a manga and there is no LN (although it is based on a web novel).
Oddly, given the above, the two artists you’ve left untranslated are a separate artist (Kamegoya Sato) and character designer (Nabeshima Tetsuhiro). It runs in Dengeki Daioh.
Apparently I’ve actually read up to chapter 15 (with chapter 19 being the latest in June, it having skipped a month in July) but I had to skim the first chapter to remember what it is about, which reminded me that I’m absolutely only reading it because I liked the design of the stray god (you choosing the volume 3 cover threw me off because she’s not on it).