Transferring FFXIV from PS3 to PS3

[Sentaryuu]

Yes, I'm playing on PS3, but it's all I got right now. My brother's PS3 (he wants it back in his room) to be exact. My brother doesn't play so you know. I would upgrade to PS4 if I had the money, but I don't and don't know when I'd have the money. Anyway, soon I hope to buy a used PS3 and hopefully for cheap. The problem is I don't know how to transfer FFXIV from his to the one I buy. Would I have to rebuy the game? I hope not. :/ Can I just log into my PSN and it should have my save?

Thank you!

Not sure if right place or not. Don't post here often. I'd post this on PS forums, but I don't think they answer questions much. I've tried when I first started playing almost 2 months ago.