If at the time of the hard fork november 15 you will in bitcoins, then be sure to keep them on exchanges, otherwise you will not be able to make deposits for sale, both sides do not want to put protection from repeated transactions
Bitcoin and forks may be just scams. There may be smart people controlling how things go. If you hold bitcoins and say if Nov 15 they fork into 10 forks, where do your coins belong? BTC1, BTC2,...., which forks are the miners
working on.
Heavenly opportunities!. You sell in all 10 forks of the blockchains and then run away laughing to the bank.You got better money - paper US dollars.
To transfer your bitcoins to the exchanges is the same as transferring cash to your stockbrokers. Are you sure the bitcoin exchanges are regulated? Are you sure they are not crooks. If you have the coins in the regulated Japanese exchanges, then you are safer.