So this is a demo. The reason why I am talking about this is because my quick research shows that this takes place before the main game.
This is not to be confused with Final Fantasy XII.
Final Fantasy X-2 came out in Japan in 2003 and rest of the world in 2004 on the Playstaion 2. It is once again made by Square / Square Enix. Then it was remastered for the PS3 and PS Vita in 2013, and was ported to PS4 in 2015. And the PC version was released in 2016. The version I played was on the PS4.