Kingdom Hearts 358/2 Days

Kingdom Hearts 358/2 Days (pronounced Kingdom Hearts Three-Five-Eight Days over Two) is the fifth mainline entry in the Kingdom Hearts series. The game takes place concurrently with the events of Kingdom Hearts: Chain of Memories and ends right when Kingdom Hearts II begins. Originally released for Nintendo DS in 2009, the cutscenes have since been remastered in 2013 as part of Kingdom Hearts HD 1.5 Remix on PlayStation 3.

Relevance to Final Fantasy
Several items and abilities from the Final Fantasy franchise appear in this game.