The story is nice but really boring as the plot is repetitive. He goes somewhere in some cave then he is attacked by something stronger, he promises himself not to do so again and few chapters later he still does... then repeat and repeat.
Why does it have to be so racist? “Overseas devils” that kill everyone. Almost every bad character named “Smith” or “John” really? Cant we have at least one story without the baseless “We are the best!”?