hmmmm.
I haven't heard or read a word "brifters" in Japan.
I looked in a dictionary and found none, but internet taught me. lol!
Friends and I still call them brake levers.
Bike shop guys call STI or dual control levers for Shimano, Ergo Levers for Campy.
I'm not sure if "brifter" is a common term for them in Japanese.