So just started the game just made it through the intro, noticed a few minor mistakes during the intro and in one of the starting equipment nothing major, but if for whatever reason you do an update may be worth fixing as well (gonna bolden the part of the sentences that I write different that what is in the game)
The last part of the first line here sounds odd, should probably be "Well, I have no reason to be
in a hurry"
2nd line here should probably be "Monster
s are easy to
deal with ~<star>"
And at last for the "Mii's Katana" in the 3rd line explaing the stats the last part is a bit of a misspelling should be "5% chan
ce of
an extra turn"
But yeah as I said really minor, probably not worth a patch on their own, but if for whatever reason you need to fix something else it should be quick to fix these as well.
And other than that it seems at this first glance at least very well written, so good job there