>>2160369Every mountain under 2000m look the same and you will get tired of it if you hike long enough. Also, Japanese people don't have much time to hike for several days and trails are short. If you want to walk for several days, you will be forced to travel from trail to trail, walking on roads for many hours in the total of your trip.
I do not think it's that great but there are a lot of options at least.