This page of the Ghostwire: Tokyo guide contains a walkthrough of the The Boss Tanuki side quest. We explain how to find all the Tanuki and obtain the Tanuki Outfit.
Completing the Tanuki Hunt side quest and finding the first Tanuki lets you start searching for the remaining 24 of them.
We've listed the locations of all Tanuki on separate pages of the guide:
Finding all 25 Tanuki unlocks a new side quest - The Tanuki Boss. Go to Kirogaoka shrine and talk to the Boss. You'll be rewarded with the Tanuki Outfit for your help.