The Boxes of Carnage (修羅開匣, Shura Kaikō) are the special Box Weapons of the Six Funeral Wreaths given to them by Byakuran, and could be considered the Millefiore's equivalent to the Vongola Boxes. Unlike normal Box Weapons, these are implanted into the chest of each Wreath on the left pectoral muscle and when opened will transform the user into a weapon/human hybrid with all the abilities of the Box Weapon at their disposal. It has been revealed that when these Box Weapons are activated, all wounds gained before transforming are completely healed.