Responses
Don't remember about the eye color thing, but...
Spoiler:
Jiha IS actually becoming a god. He was basically chosen as the main god's successor, hence his unique class, and eventually takes over their duties and is recognized as such. The nature gods (aka Jiha's growing menagerie of exotic pets) ARE demi-gods, and haven't signed contracts with hunters in a long time. When they do, it's akin to the constellations in other hunter stories where they boost contractees' power and windows expressing their thoughts pop up.
It's brought to my attention in the close-up of their eyes where Jiha says, "Part divine?" to Hyungsuk, they have the same eye color so I wonder if that has significance to the plot or if it's just trivial and a coincidence.
Though I haven't gone through earlier chapters to see if any other characters have it to make that eye color just a stylistic choice.
I see this is based off a novel so if anyone knows anything about this, please spoil me LOL (▰˘◡˘▰)(make sure to mark ur spoilers, ofc)