Bitcoin is the "real money" itself and what you refer to as real money is not even money, it is fiat "currency". As a reminder the difference between money and currency is that currency is a medium of exchange while money is a currency that is also store of value.
Fiats are currencies because they are not store of value, they are only medium of exchange. And because bitcoin is a medium of exchange with a capped supply, it can be a store of value which makes it money.