The advertising for the game in Japan is out of this world. Saw ist everywhere so I think it will sell okay, but games are not that big anymore in Japan so it wont sell gangbusters like back then.
Certainly the way they play games has changed, but to say that a country where most people play games on their smartphone, where there are 1-2 pachislot parlors in every town, and a quarter of their primetime TV is trivia-quiz shows as not as into games as they once were is strange.
If it doesn't sell as well as it did in the past, it won't be because Japan is not as into games, but because it is on the wrong platforms.