Flame Of Wrath

The Flame of Wrath (怒りの炎, Ikari no Honoo, Viz: Flame of Rage) is an extremely powerful and exceedingly rare type of flame. It is said that among the Vongola Bosses, the only one who fought with bare hands was the Vongola Secondo because of this Flame.

Description
The special characteristic of this Flame is its extreme destructive power which can reduce anything to ashes. Also, this Flame was seen only when the 2nd Vongola boss was enraged; thus, it earned the title "Flame of Wrath" to support this theory.

Unlike the regular Dying Will Flames, there is no need to use a Ring to ignite the flame. The Future Arc hints that the Flame of Wrath contains Storm Flames, as when Xanxus inserted it into his Box Weapon with the Sky Flames from his Varia Ring, a weapon that possessed the Sky Flame's Harmony characteristic and the Storm Flame's Disintegration characteristic came out.