Earlier quoted context omitted.
Didn't know that and thanks for giving us the idea. Aibó sounds much better than Sidekick, we may need to rename :)
Please don't write it Aibó, though. The proper romanization is Aibō or Aibou. See https://en.m.wikipedia.org/wiki/Hepburn_romanization#Long_vo...
Since I'm originally from Slovakia, I used my Slovak IME, which is convenient for me.
Incidentally, Slovak has its own romanization of Japanese, which uses almost nothing but Slovak letters and diacritics (plus "w").
Wikipedia pages about 九州 and 四国:
https://sk.wikipedia.org/wiki/Kjúšu
https://sk.wikipedia.org/wiki/Šikoku
The Hepburn system is an Americanism. Americans don't own the Roman alphabet or the way it should be applied to Japanese. Though Hepburn has official status in that it is taught in Japan, and used for the benefit of visitors. E.g. signs giving names of train stations or government buildings or what have you.