Actually the comparison with Maruuk and Vulgor was pretty spot on, I noticed that pretty quickly. Gruff, somewhat rude, outright suspicious while also secretly caring (to an extent). I wouldn't call either of them "nice" either.
There are a few similarities with FBTW, with the main one being the MC ending up in a different world with no clue how or why, but to be fair that's a pretty common trope.
That said, I prefer this VN. The MC doesn't quickly decide to become a doting housewife for a closet case wolf, and you aren't forced into one romance route either (it seems).