For every point of the entire party’s maximum Energy, the Elemental Burst DMG of the character equipping this weapon is increased by 0.12/0.15/0.18/0.21/0.24%. A maximum of 40/50/60/70/80% increased Elemental Burst DMG can be achieved this way.
In Game Description
The beloved sword of the legendary “Akuou.” The blade is huge and majestic, but is surprisingly easy to wield.
How to Get Akuoumaru?
Can be obtained from exclusive weapon banner
Weapon Upgrade Materials
Here’s all material used to upgrade Akuoumaru claymore: