What is it with Italians and that anime? Was it particularly big there or something?
Anyway the only text file format you will find tools or descriptions of would be the bmg format some Nintendo games use. Anything else you are pretty much on your own for.
I took a look (others playing along it a bunch of .mes are in the txt folder) and nothing particularly jumped out at me. Are you sure this is the text? In the tlk folder is a bunch of files called tlk and while they don't appear to be a known encoding it does look far more like I normally expect Japanese text to look -- in the .mes stuff there is a lot of repetition and most things between it are very simple runs of hex which is not how text normally looks (think how many different characters I have used in this, and Japanese is far worse than English in this regard).
There are also a lot of graphics in this game which might well contain some text (simpler games often have such things, as do menus).
