According to a questionnaire about "delicious meal" to foreigners visiting Japan taken by "HOT PEPPER", Tonkatsu (including katsu-don and katsu-curry) ranked the third following ramen and sashimi.

In fact, KATSUYA develops 29 shops (including franchise) and MATSUYA does 9 shops overseas.

https://headlines.yahoo.co.jp/hl?a=20170818-00010000-abemav-bus_all