1. The amount of tokens/Ryo coins in the genesis Block is not yet determine, in any case Ryo is a free money market and the binding of system-wide credit to money creation ensure that the amount of money in circulation will be appropriate for the state of the economy.
2.
You have on plans include airdrops, bountys or giveaways?
Whats the algorithm of the coin? As PoS coin what will be the expected stake reward? Are in plans add MN?
Its good explain about possible mistake with other coin but will be better if you add more technical info about the coin, not only link to the webpage.
Yes Main Net are in plans. sooner then you might think

(but no master node)
the algorithm is a bit complex but here some info from the white paper:
"Ryō (Japanese: 両) is a cryptocurrency and monetary system designed to
be both a store of value and a medium of exchange. Using a free, decentralized
monetary market, the Ryō system tethers money supply to credit without the need
for a monopolistic regulatory institution. Money supply is adjusted dynamically
depending on economic cycles making for a better medium of exchange. Ryō and its
Proof of Trust (PoT) model is therefore expected to be a fuller and more complete
substitute for Fiat monetary systems than any cryptocurrency yet"
3. Ryō has NOTHING to do with the similarly named Sumokoin fork (
https://ryo-currency.com/). Our community has been actively building Ryō for the last year and chose the name before any other coin existed with the same title and we own a domain which illustrates that.
We decided to proceed with our announcement using the name Ryō so as to avoid delays, but do not intend to step on anyone’s toes over at
https://ryo-currency.com/. We plan on changing the name before launch.