Difference between OYAB and BUN

Both OYAB and BUN are cryptocurrencies.
The OYAB is the in-game currency that you'll earn during Street and Fight missions. This unlimited-supply currency is off-chain and can be SWAP for BUN.
The BUN is a governance token. It is deflationary and 40% of these tokens are distributed to players in the game.
A player starts earning BUN when one of his cyber-yakuza NFTs reaches level 50.
The BUN token that you have thanks to the SWAP is currently off-chain, this token will later be on-chain.