Good news (or bad depending on how impatient you are).
The author, Orihara Sachiko, has posted on her blog that volume 2 is planned to be released sometime this year. The chapters are initially released in the magazine "The Chief Goes!" and volume 1 left off at magazine issue #133 (April 2019). The newest magazine issue as of this month is #148, so chances are we'll be getting a volume 2 release this December.
If I were still living in Japan I'd be able to procure the magazine issues but alas, I'd rather not pay for overseas shipping for that many issues and would rather wait till volume 2 comes out. I'll keep looking for electronic copies (which I know exist from me taking a look at her blog); if anyone does find them please send me a link!
EDIT: It appears that while e-versions do exist of the magazine, the volumes are cycled out of availability. Right now only #142-148 are buyable, meaning even if I got those we'd be missing 9 chapters. Guess I don't have a choice in waiting till Vol 2...at least I can rest assured with the newly acquired knowledge of best girl Satsuki-chan's hair colour.