Thanks for reading. All the names of the first chapter are repeated afterwards, I don't create characters for one use only. You are right about the first chapter not telling much about Nikola's goal, although I think I made his wish to bring back Penemue clear. I'll add the order of the chapters and will be checking out your story too. I read it's summery and it sounds interesting. Like industrial revolution waiting to happen.
I just wrote a review without the intention of doing the swaps, So you dont have to read too much. Especially since I do get plenty already.
The issue with names, even if they will be used in the future is that there are too many of them so early in the story. No matter whether they will be used or not. You want to ease the reader into your story, establish a primary goal to get them in and only then start slowly supplying them with worldbuilding. With so much information being presented from the start (information that new readers don't care about, yet) it makes it harder for readers to enjoy the story since they are occupied with comprehension.
This is the reason I always try to concentrate on the 1st chapters in my reviews. They are the most crucial and usually sell the rest of the story. Especially since the aforementioned ambiguity of the title\synopsis. Imo you should treat all three of these as advertisements for the rest of your story.
You said in the description that your story is isekai, but your MC ate a fruit and suddenly become a musician. And he is such an angry little thing, which is explainable since he is a slave. So, you kept that in character. But you use a bit too much profanity for my taste.
Tags are for a reason and this one had been discussed in the 1st chapter comments too (with these that had read further confirming the validity of the tag). I just use them in a less obvious manner.