If you think a quality Alt-coin will come out of Japan in the foreseeable future, you're wrong.
The open source community is non-existent in Japan, and Mona/Kuma are just out to pump and dump.
Play around with it, but don't go spending all your money on it.
Their github will end up like Mona, a barren wasteland where no one makes any commits ever.
Rule number one: never say it will not happen.
What do you really think that no person In Japan will ever come with an idea that might even be better that btc itself.
It's actually time for a real Satoshi to emerge.