Alright! Thanks for sharing it! I'll review only the English version because I can't read any Portuguese.
-The cover/banner: I like the cover. The art is clean, and the colors are done well.
-How hooking the prologue is: Honestly, while I find it interesting. The large number of spelling and grammar errors make it hard to read. Many sentences are also unclear in their meaning. I am adding some examples here just to be more clear.
Summary
Grammar
Together him, there was Ílliou, Lian and Stan. All them were promising and skilled soldiers, being all Kashans.
Bunch of Spellings
entried on the militar college,
Lian, trying to avoid staying out of the conversation
Thamiso felt his heart weighter
Unclear Sentences
In the end, the unique solution to cease the disgrace is the one dived in blood
Thamiso, as leader of his squad, shows a satisfied air of his companions.
Impressions on the first few chapters and whether they make me want to keep reading: I like the story, it seems interesting. But the grammar and spellings make it very difficult to continue reading.
General story and/or artwork: As I mentioned before, the story seems interesting. Each chapter is interesting and your world-building is being done well. A little awkward, but well.
-Style, tone, and setting: Tone is done pretty good and the setting is interesting too. I would highly suggest spacing your chapters. There is no gap between any paragraphs and that makes it very difficult to read,
-Writing/storytelling style and how smooth it is: I'll just skip over this since I mention all of this above.
Overall. I like the story, it has potential and is written interestingly. It can be difficult to get a native translator on board so please try using Grammarly to fix your spellings and grammar along with some other text editor.
Thank you for sharing it, it was an interesting read and I am subscribed from a while back