Thread:Bluerfn/@comment-1783453-20200119094322/@comment-34853-20200119111646

That's right, it's taught within Japan to the Japanese: the Kunrei-shiki. Then JSL is was made to facilitate Kunrei-shiki use for English speakers. But Hepburn is widely used by English speakers because it adapts Japanese phonetics to English spelling. That is why the romaji you see in-game tends to be spelled a different way between JSL/Kunrei vs Hepburn ie "しき" is romanized as (JSL/Kunrei) "Siki" instead of (Hepburn) "Shiki" and "さつ"　is romanized as (JSL/Kunrei) "Satu" instead of (Hepburn) "Satsu".

I mean, I get why JSL seems more appropriate because the source material is using it and its easier to type longhand rather than finding the diacritic letter, but Hepburn is IMHO a bit more accurate in terms of pronunciation. The Japanese study books I use ie by Kodansha, and Wikipedia also use Hepburn, which is why I endorse Hepburn romanization more than JSL.