converting a country's currency into cryptocurrency is very unreasonable? but the crazy idea really needs to be done, I think it takes a long time and requires a high level of consensus among the countries in the world about the realization of the plan.

I am very interested to be part of this project.

I started a lightning explorer server.
http://explorer.monacoin.ninja:10080/

LND test now

Unlikely this will happen any time soon, if ever, but there will be a time altcoins will become mainstream and widely accepted, MonaCoin could be one of them.

Who would choose to pay in Mona? Who would choose to pay in Bitcoin? All I know is, if they've built their payment gateway to be this strong, the coin is currently undervalued. This is just my perspective thought!

It's not too late !
200 million market cap for the Japanese Litecoin is a no brainer !
This beauty can go to 100$
Time will tell.

An great article on Monacoin , a little bit of history and other interesting tit-bits.

There are now at least four major currency exchanges in Japan where monacoin is traded, including ZAIF,  and at least five online stores and physical stores that accept Monacoin. There are also an increasing number of ATMs in Japan that deal in Monacoin, and because it is Japan’s first cryptocurrency, it has a solid fanbase.

https://www.forbes.com/sites/adelsteinjake/2018/04/19/monacoin-japans-first-native-cryptocurrency-next-big-thing-or-next-beta-max/#1872845c3495

electrum-mona 3.1.3.1 release
https://electrum-mona.org

sorry.
3.1.3 There was a problem that electrum-mona shutdowned when creating a new wallet.