Firstly, congratulations on making this map. It is easily one of my favorites. However, I noticed you wrote "Domo Arigato -..." in the lower right corner of the map. You opted for Romaji here, which is fine, but you spelled both word incorrectly.
It should have a line over the first "o" in Domo, and a line over the "o" in Arigato. Otherwise, it could be "Doomo Arigatoo" or, for a more literal but less phonetically correct option, "Doumo Arigatou". But not Domo Arigato.
As such, the way you currently have it spelled it is missing a full syllable. This is actually a big deal, as I have experienced first hand when I asked a native speaker about watching movies (the word for movie is "eega/eiga") but they had no clue what I was talking about because I omitted a syllable (I said ega, instead of eega). This map is quality enough that it should not have this blemish on it.
Maybe this has been addressed already, and if so I am sorry. If it cannot be fixed, I understand as well. But you should be aware of it.