I've been taking a look at Koikatsu for the past few days, and I would say it's a very fast graphics engine when compared to Daz. Even for creating animations, this is highly efficient in terms of saving time, the exact opposite of Daz.
I see a lot of devs using this asset, which is not a bad thing, anime style graphics can be interesting at times, and for a fantasy story like here, it would fit well. I think that, if that had been used for this game, the dev would have more time to apply in writing, deepening the story, something that the game needs a lot, currently.