This game only supports Japanese interface/voice for customers in Japa

[H 4 Z E]

So, what exactly does it entail? Does it mean that if i buy the game in Japan, its gonna have only Japanese, ot it doesn't matter where i buy the game, as long as I'm gonna be launching steam in Japan, the game only gonna have Japanese?
Rn I'm in Kazakhstan and gonna fly to Japan in a week, just considering whether it makes sense for me to buy this or not, considering I don't know Japanese pretty much at all