Japan is the only major country that gave digital currencies legal tender => the Japanese people have no constrain to buy/sell cryptos
MONA is the only decentralized altcoin in Japan => fairly distributed and mined
MONA can be bought versus JPY fiat in Japan => easy for new crypto entrants
MONA is accepted by merchants there => there is a growing ecosystem there
MONA has a strong tech => 1.5 MIN blocks and segwit

Potential is still huge in my view.