Asura

Asura (阿修羅) is one of Xaldin's weapons in Kingdom Hearts 358/2 Days. It can be upgraded to Asura+.

Trivia
Asura/Ashura is both a recurring Katana weapon and Summon in the  Final Fantasy video game series, as well as a boss in  Final Fantasy IV and  Vagrant Story. Asura is also the name of one of the servers from  Final Fantasy XI.