The big, breaking news of the 2008 E3 gaming expo was that role-playing game Final Fantasy XIII was coming to the Xbox 360. The game had been previously thought to be a PS3 exclusive.
https://lastchance.cc/final-fantasy-xiii-coming-to-xbox-360-5025018%3C/a%3E%3C/p%3E
However, in summer 2008, Xbox Taiwan said the game would be getting an “Asian Version”, providing hope to Japanese Xbox 360 owners who wanted to at least play the game on their Microsoft machine. Microsoft later clarified its own clarification, and an Asian Version was not released.
https://lastchance.cc/final-fantasy-xiii-xbox-360-asia-version-announced-5033117%3C/a%3E%3C/p%3E
The number of Achievements for this apparent Japanese version seems to be significantly less than the number for the Western version.
Kotaku is following up with Xbox Japan.
ファイナルファンタジーXIII 実績が日本語化 [XNEWS]