I've never heard Ajinomoto in English either but I can't imagine it in an American accent at all XD Also, Casio doesn't have the sh sound in English, at least as far as I've heard it. Like Ka-see-oh
FYI, Costco = Cost Company In the Hawaiian language there are 5 vowels and 8 consonants. So it is very easy for Japanese to read and pronounce the written Hawaiian language. For example, "Kuhio" = "Ku Heeyo". Many from the Mainland U.S. would pronounce it "ku hi yo" . Another one is "Hilo" = "hee lo" not "hi lo"