Im certain that guwon doesn't die and just because weak but my headcanon is that Jinwoo realizes that maybe the dictatorial iron fist of ruling over the people similar to what the hounds and guwon had going on was the way after all, and if guwon wasn't a ML or maybe this wasnt a romance then I am pretty sure that this was the route the author may have taken given her love for jinwoo ( just look at her twt it's nothing but him)
Or the more likely route of all of them dying in 3 days cause they cannot sustain themselves

But i'm interested to see how they will sustain this community without the hounds or Guwon