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Akuoumaru – How to get, Ascension, stats, and who can use it in Genshin Impact

This weapon's efficacy depends on your team comp.

The Akuoumaru is a Genshin Impact four-star claymore in the Watatsumi Wavewalker series, which focuses on boosting Elemental Burst Damage based on the party's cumulative Energy capacity. It's an amazing weapon that can compete against some five-star options, but you need to assemble an appropriate team to make the most of its passive bonus.

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How to get Akuoumaru in Genshin Impact

Akuoumaru is a limited weapon that can only be obtained whenever it's featured on rate-up in the Epitome Invocation banner, which you can pull on using Primogems and Intertwined Fates. However, being a four-star weapon, you can't chart an Epitomized Path for Akuoumaru. Obtaining it comes down to pure luck.

Genshin Impact Akuoumaru stats

  • Base Attack: 42 to 510
  • Substat: Attack (9 to 41.3 percent)
  • Passive: Watatsumi Wavewalker
    • For every point of the entire party's combined maximum Energy capacity, the Elemental Burst Damage of the character equipping this weapon is increased by 0.12/0.15/0.18/0.21/0.24 percent. A maximum of 40/50/60/70/80 percent increased Elemental Burst Damage can be achieved this way.

Keep in mind that Energy capacity refers to Energy cost, not Energy Recharge. Check out the 'who can use Akuoumaru' section below for more information.

Related: How does Energy Recharge work in Genshin Impact

Genshin Impact Akuoumaru Ascension cost & materials

Below are all the Ascension materials necessary for Akuoumaru. They can be farmed from the following:

  • Handguards: Kairagi and Nobushi in Inazuma
  • Talons: Rifthounds, mainly in Tsurumi Island and Wolvendom
  • Narukami: Court of Flowing Sand (Monday, Thursday, Sunday)

Ascension Phase 1

x5,000 Mora

x2 Old Handguard

x3 Concealed Claw

x3 Coral Branch of a Distant Sea

Ascension Phase 2

x15,000 Mora

x8 Old Handguard

x12 Concealed Claw

x3 Jeweled Branch of a Distant Sea

Ascension Phase 3

x20,000 Mora

x6 Kageuchi Handguard

x6 Concealed Unguis

x6 Jeweled Branch of a Distant Sea

Ascension Phase 4

x30,000 Mora

x9 Kageuchi Handguard

x12 Concealed Unguis

x3 Jade Branch of a Distant Sea

Ascension Phase 5

x35,000 Mora

x6 Famed Handguard

x9 Concealed Talon

Jade Branch of a Distant Sea

Ascension Phase 6

x45,000 Mora

x12 Famed Handguard

x18 Concealed Talon

x4 Golden Branch of a Distant Sea

Who can use Akuoumaru in Genshin Impact

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Akuoumaru has a unique mechanic: it boosts Elemental Burst Damage based on the cumulative Energy capacity of the entire team. This means that you need to put together a team with a high Energy cost requirement while also considering that you need to be able to recharge Energy fast enough to help the wielder use their Burst Damage on rotation.

With that said, Akuoumaru is an amazing weapon for characters who rely on their Elemental Burst Damage. Characters whose Elemental Bursts change their Normal Attacks (Razor, Itto) can't benefit from this weapon, as the Normal Attack Damage doesn't increase. Here are some characters who can use this amazing weapon.

For more guides on Watatsumi Wavewalker weapons, check out Wavebreaker’s Fin: How to get, Ascension, stats, and who can use it in Genshin Impact and Mouun’s Moon: How to get, Ascension, stats, and who can use it in Genshin Impact.

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Image of Nicki Si
Nicki Si
Nicki is a freelance writer with 5 years of writing experience. She's a fan of anything from HoYoverse, from Genshin Impact to Tears of Themis and Honkai: Star Rail. She also loves rhythm games like BanG Dream! and D4DJ.

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Akuoumaru – How to get, Ascension, stats, and who can use it in Genshin Impact

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