Alright just a bit of a break down. One I do not range writing style. Since this is widely subjective. Hence it is the least accurate scaling. So that there will be left at max. Now from what I can gather. The character has been captured during a war, with some kind of ability. I believe the chapter mentioned regenerative ones. It is an interesting concept. Which I will be honest, I have seen it before, but from the context given. I am also expecting more in depth of an action. Given that since this character has been tortured, and they let the person live. They are gonna have plans for them.
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Now my only real issue with this is spelling errors. I do not believe I noticed punctuation ones. Though I did come across about five spelling errors. Maybe even some more may have eluded my eyes. Since this is first person as well. I did not want to get too much into the structure, though this might be clarified later on.
A bit more to add on. While I do like the concept. When getting into chapter 2, it fades from the Fantasy pretty fast. I suppose this is for a build up. Though between one and two, I also got very different vibes. It could even out. Also, I am confused about what tense you are using. Some are present, some are past. It does not appear to be using past perfect, or present perfect as well.