Squeeezy

Well ... her name was inconsistent in the first chapters and she was a brunette in the Madhouse version and blonde in the Nippon version iirc

What you just said is the total opposite of NORMAL. For something to be normal it has to be something the majority of the population can accomplish and not the top 1%. Accomplishing something beyond that is what separates the elite and the normal and when we call someone OP is literally because he performs constantly at an elite level. So insisting that Zoro is a normal human and that other characters can just do it too is absurd.

How does it not matter how OP Zoro is? A normal human would be someone like Tashigi as despite training and being a marine for a long time is nowhere near as strong as him. And while I agree that not everything needs to be detailed but important points are important nonetheless. It's okay to gloss over something like the taste of something but not when it comes to something as important as the Protagonist’s body undergoing mutation as in your theory. Even if you don't want to explain it at the time, you need to at least imply something. If a reader has to make up an excuse for something happening then it's a plot hole as there is no explanation (logical or not) as for why it happened in the story.

Oh boy and I thought this was over. Where do I start with you ... First of all, you are making assumptions that the DF shouldn't work because of his body being from another universe and therefore it was changed ... okay fair enough assumption but there is nothing in the text that suggests it. You are filling the plot hole left by the author on your own so my point on it still stands according to what is written. Secondly ... are you really picking Zoro of all characters in OP as a standard for a NORMAL human? Even Chopper is a more appropriate example of a normal human than Zoro and he is a fckin reindeer.

Is it 18 or 17? Just a few chapters back he was already 18 and now he is back to 17?

One of the best HP FF I've read in a long time. The MC has depth and is not just a copy paste of numerous others. Although cringe and edgy at times, it doesn't feel out of place or exaggerated. The only reason it didn't get a 5 star rating is that it needs some editing. Names are inconsistent through the story and some chapters have doubled texts.

TL;DR: Inconsistent story, don't recommend. Wish I could give it a better rating but it's impossible currently. This work needs some serious editing and proofreading. Every chapter there are numerous problems from the more common ones in here like using wrong pronouns and wrong names. And more commonly in the last chapters I read it just keeps on forgetting the daughter and saying they only have two sons/babies every time. And the story consistency is getting worse and worse, the main antagonist(up to where I read) Han Xuemei, the FL cousin, just got orphaned and adopted by the FL's dad out of nowhere when her parents are still alive in their hometown.

Mirabel created a new body and resurrected her soon after completing her immortality ritual

I knew it