Oh, this is an interesting idea! Probably would be good for me to let go of the guilt of not finishing all the books I start 
I will try to approach it with this mindset tomorrow 
Hopefully I will wander into something that grabs my attention. (Something much easier said than done recently, my brain is literally everywhere this week)
It’s trueeee
雨と君と was the first tanuki manga I read, and that is the one I was referring to - as you’ve seen, it contains what may in fact be the cutest tanuki in the whole entire world. Highly, highly recommend for the cuteness factor 
It’s not super text heavy, so depending on your level it might be a bit easy, but it definitely had more text than the Fox and Tanuki book that you probably also saw on my Bookmeter If you’d like something with slightly more narrative substance (雨と君と is pretty slice of life-y), I really really enjoyed お前、タヌキにならねーか? as well. I’m planning to get the second volume of that whenever I get the third 雨と君と ^^ (I posted about that one in the winter challenge)
Actually I remembered just now that I still have yet another tanuki series in my reading stack Maybe that one will make an appearance in this challenge…