Thank you! Indeed I plan to rewrite, as this is my first serialized story. A lot of the issues you pointed out are some really interesting, fixing them should be fun. About the synopsis, I'm just terrible at it lol. That was the premise of the story when I started, and I selected tags to fit the vague outline I had in my head when I started writing.I had an opening joke for you as well, but I forgot before I wrote it down, so you'll have to do without.
Improvement advice is not my strong suit, but I'll see what I can do.
Synopsis/Tags vs. Content
A good few of the tags aren't implemented yet, but with the immortal theme, I'll take them as teasers for future content.
The synopsis spoils a lot, though, so perhaps consider revamping it to match the foreshadowing of the early chapters instead of dumping the entire thing?
World
Interesting dark-ish fantasy. Focusing on elements that usually take a smaller role, like the vessel casting, give the story a refreshing feel.
This might be due to the added factor of magic that messes with progression, but I find the contrast between mud house vs artificially cooled library a bit too wide to not bring it up. I understand that quality housing is expensive, but that usually just means that the buildings are shared between more people, while you gave each warrior their own. Not to mention that there's a tavern
Characters
Silas, though not being given any extreme or unusual believes, doesn't feel bland. Similar to the setting, he is "simple well done"... most of the time. At least in my impression, he has a tendency to go through changes in emotion without much apparent reason. He embarks on a revenge hunt for his fallen mother, yet he seemingly doesn't care as soon as he returns.
The foreshadowing makes one want to know more about his past/future, but the until now all too positive power is a bit boring to me.
Aurel is similar in that regard. And otherwise he doesn't appear to have a lot going for him as of now. This character archetype is useful for comedic relief, but I don't think that does you much good as long as the "serious" part of the story is watered down already. In the beginning the MC commented how Aurel hated Lycans even more than him, which was an interesting buildup for their dynamic in my view, but after they return to the village, he devolves to being the goofy friend character.
Minerva and the bickering sibling relationship they have is fun to read, but again, she contributes to diluting the passive threat of living in a world with superhuman predators.
Plot
After some exposition dump, you get right into action. The fights themselves are well done imo, if you did not rely on the Lycan's inexplicable arrogance so much. The one they fight goes between grinning smugly and howling in pain a few times too often to sound believable.
I'm guessing you want to stress the fact that the two are still extremely weak and only hold their own through the opponent's negligence, but I'd say you can do without those extra remarks, as the flow of the battle shows the power difference clearly enough already imo.
The banter and dueling after that are fun to read by themselves, but don't fit into the harsh reality described before.
Writing and Grammar
With the canon narrator (An older Silas), it makes sense for him to know more in hindsight, even be biased in his evaluations. But unless he became all knowing in the time gap between the events on the story and the point where he narrated from, there are certain things he should not be able to know, such as the thoughts and inner workings of other characters. He can guess them of course, but you often have him state them with absolute certainty.
Also, since he's the one narrating, saying anything positive about the young version is him tooting his own horn, which I'm not entirely sure is an intended characterization.
It's not a huge problem, but look out for paragraphs like this one, that have sentences with nearly identical meaning.
You have described your own writing style as "dry wood", which I don't find to be necessarily bad myself, but emotion comes across as random and awkward most of the time.
Suggestions
The above already goes over most of what I consider to be in need of redo. (You said you considered rewriting)
A double edge for his power might be good.
Regarding the dry writing, perhaps swap some of the impersonal background info for biased/emotional reactions. I would rather go with description than internal outcries, though.
Try to even out the way you implement emotion. Add a lot of small expressions here and there and ask yourself whether those you already have are justified in their intensity (I find a few to be somewhat excessive)
That's the best advice I can give on the spot.
Just for the record: If either of you want me to do your books, please say so, otherwise I'll assume your questions to be in public interest.
Being a discover writer and the story being something I write mostly on weekends, the premise I started with and the story right now are different. Although, there is one problem you pointed out that happened by mistake, however, it fits with where the story ends.
Thank you so much for this. Couldn't have been easy reading through that and giving constructive criticism for free. Thank you!