We don't know that they're competing for Japan though. He's Canadian and they may be planning to skate for Canada. FWIW in their summer comps, they're listed as representing their club in Vancouver, whereas the Japanese competitors I noticed (like Shingo Nishiyama) listed Japan, rather than the club they skate for. Doesn't necessarily tell us anything, but listing Japan would have. Sylvia from Unseen Skaters said she's heard they'll be skating for Canada.
Thank you for the clarification. I'll add a note to the original post.