How do you get tickets for shows in Japan?

Happy Friday, fellow Redditors!

I am lucky enough to be traveling to Japan in October, and as part of that, I am going to be in Osaka on 10/14.

What luck! BABYMETAL will be playing that evening at the OSAKA-JO HALL.

Does anyone know how to buy tickets to that show?

...or does only the fox god know? \m/