I just realized that when talking with the accountant, we can see now that Orga, Eugene, Biscuit and that other guy can all read. They aren't very educated and probably can't do more than basic math, but at least they're all literate. I can see them getting taken advantage of several times over if they were trying to take over the business and none of them knew how to read.
Now if one of them could just teach Mika? But then maybe he just doesn't care? Orga knows how to read, that's enough for him.
