Nutella_
thee is no problem in what you are doing author san and especially for you who is writing a book for the very first time this book is actually very good compared to 99 percent of books on webnovel or fanfiction.net, wattpad or any other platform. just don't make this book a harem and it will turn out great, because there are next to no grammatical mistakes, nor are there any of those cliché of mc vowing to protect people he didn't knew or protecting a village that he only knew from fiction and mc actually prioritizes himself above all people which is also good. so overall you are on right path, just don't ruin the book with harem and romance and this book of yours will turn out excellent in every aspect. don't mind the haters, they are gonna hate so just focus on what you want to do and on all positive reviews. good luck and keep up with the great work my friend, you will go far.