There's the movie "Seven Samurai", which would sound strange as "Seven Samurais", but in the news you often read about "hundreds of tsunamis". Some people say they know 500 kanjis, but I've always thought 500 kanji sounded more correct. Is there any standard way to pluralize Japanese words that are used in English?
(Not sure if this is a good question for here, seeing as it's more about English.)