No chance whatsoever.
It is launching on a console with an install base of less than 5 million. Even if it sells very well for the rest of this year, and reasonably well through 2018, and still sells okay through 2019, *and* the Switch continues to sell very well, Splatoon 2 *may* get to 10mm worldwide. That gives you 2-3mm in Japan. Even that requires a whole lot of factors to fall in the game.s favor.