It depends on whether you are speaking Latin or English
sudoku, tsunami, karate, karaoke and many other words are also pronounced quite differently in English from in Japanese, and similarly with words from other languages.
I believe traditional English pronunciation of Latin is based on traditional French pronunciation, borrowed so long ago that it went through much the same sound changes as English did. Thus ‘long e’ is pronounced like English ‘long e’ (as in
bee, tree, see), for example.
Nowadays, there are several different pronunciations of Latin available, e.g. Ecclesiastical, reconstructed, traditional English, etc.