Guardian Hearts

 are a line of swords forged by Harden for the Astarian Military.

History
Twenty years ago, Astaria waged war on the Kim-un-kur, and was in need of weapons. Harden, an Astarian blacksmith who at the time burned with patriotism, put his heart into the creation of the swords. The swords remained in use for at least two years, having been used in the Battle of Moss Mountain.

Wishing to see his masterpieces in action, he headed to the battlefield himself. During this visit, he watched soldiers use his weapons to hunt a +Anima, Margaret; Harden jumped to her defense. Soon after, Harden stopped forging swords in favor of household tools, and the Guardian Hearts were discontinued.