I like responding in depth, but for my general impressions, I want to say I like it well enough. In this story the fantasy elements don't seem to have any purpose (especially if you choose to have Kalzrak fight the werewolves), and the first paragraph did, frankly, a terrible job introducing the world. It is mostly a shame, because the sci-fi elements shown gave a great impression of the world. I also don't feel convinced that there is a good chemistry between Kalzrak and Clash. The one asked something, and the other said something back, before asking his own question.
That the first paragraph is kinda bad comes down to a lot of generic terms, Fantasy worlds and Magic, which say very little on their own. The second half is more specific, but it feels off in what points it focuses on. What is the relevance that the non-human creatures all came from mutated humans (for some reason specifically 'punks')? Why should I know this before the story starts (Kalzrak introduces it later with no issue.) It is also definitely not what I expect from the description on the itch.io page, where nothing indicates that it is a fantasy world.
In general the writing is good, except I find the point that the magic is shown off very clunky. The fighting did not have anything resembling tension, which was probably the point, so kudos to that. During Clash's first conversation, there were a few things that felt weird. I got confused, because he talks casually about becoming sentient, I expect that was a route thing that just happens sometimes. But later, Clash acts like he was the first robot to be sentient.
Very specific points:
“The mysteries of natural selection” I found this line funny, because as far as I get it, there isn't much mystery about natural selection.
Probably uncover, and not incover.
I wouldn't call Clash telling his backstory a “revelation”
I hope you found my comments useful, and good luck with the next visual novel!