FictionOnlyReader
I like the story, but if the story intent was to show struggle of MC then it has already been shown enough already. What is your intent for the story author? To show a weak to strong mc, or to show how a cannon fodder survives in this world? If it's the former then this current pace of plot and growth isn't justified. If you make this clear then readers wouldn't expect something else and then feel disappointed later.
Why so much pathos? The Giant cannot be taller than a chunin. Why else would he need a guard of three genin? Why does the author make some nouns important? Seriously, why not skip Ring arc? Genin did not participate in World War 4. No need to make genin something more than weaklings who could not reach the ranks of chunin.