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Weapon #2314

Akuoumaru
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TypeClaymore
Rarity
Base Attack42
Secondary StatATK
Secondary Stat Value9
Special (passive) AbilityWatatsumi Wavewalker
Special (passive) Ability DescriptionFor every point of the entire party's combined maximum Energy capacity, the Elemental Burst DMG of the character equipping this weapon is increased by 0.12%. A maximum of 40% increased Elemental Burst DMG can be achieved this way.
In-game DescriptionThe beloved sword of the legendary "Akuou." The blade is huge and majestic, but is surprisingly easy to wield.
Stat Progression
LevelBase AtkATKAscension Materials
1429
55610.5
107412.3
159114.1
2010915.9
20+13515.9
x3
x3
x2
x5000
2515217.7
3017019.5
3518721.4
4020523.2
40+23123.2
x3
x12
x8
x15000
4524825
5026626.8
50+29226.8
x6
x6
x6
x20000
5530928.6
6032730.4
60+35330.4
x3
x12
x9
x30000
6537032.3
7038834.1
70+41434.1
x6
x9
x6
x35000
7543135.9
8044937.7
80+47537.7
x4
x18
x12
x45000
8549239.5
9051041.3
Special Ability Progression (Refine)
Refine Material:
Akuoumaru
Refine Level 1For every point of the entire party's combined maximum Energy capacity, the Elemental Burst DMG of the character equipping this weapon is increased by 0.12%. A maximum of 40% increased Elemental Burst DMG can be achieved this way.
Refine Level 2For every point of the entire party's combined maximum Energy capacity, the Elemental Burst DMG of the character equipping this weapon is increased by 0.15%. A maximum of 50% increased Elemental Burst DMG can be achieved this way.
Refine Level 3For every point of the entire party's combined maximum Energy capacity, the Elemental Burst DMG of the character equipping this weapon is increased by 0.18%. A maximum of 60% increased Elemental Burst DMG can be achieved this way.
Refine Level 4For every point of the entire party's combined maximum Energy capacity, the Elemental Burst DMG of the character equipping this weapon is increased by 0.21%. A maximum of 70% increased Elemental Burst DMG can be achieved this way.
Refine Level 5For every point of the entire party's combined maximum Energy capacity, the Elemental Burst DMG of the character equipping this weapon is increased by 0.24%. A maximum of 80% increased Elemental Burst DMG can be achieved this way.
Weapon Gallery
Item Story

This blade was once used by a mighty general of Watatsumi.
It is said that he only knew as much of swordsmanship as the "Getsumouun" and "Yuushio" styles he taught himself,
And yet by their grace was he never vanquished by any mortal in a duel or on the field of battle.

It is often said that snakes and fish are both cold-blooded. But cold-blooded creatures ever seek the promised land of warmth.
To see his people's dreams fulfilled, Omikami challenged the gathering storm clouds to war.
Amongst the people of Watatsumi bent upon conquest, a young man stood out from the rest.
His fearless valor won him great love in Watatsumi, and they named him Touzannou.
But after many years passed, his kingly name was forgotten, only to be replaced by the epithet by which his foes knew him:
"Akuou," the wicked fangs and claws of the Great Serpent, the savage, demonic invader of Yashiori Island...

The slaughter had hardened the young man into a warrior. But to him,
Only the wish he made before departing, a wish made upon the moon reflected in the waters beside the shrine, was eternal.

"One day, I shall set myself above Mt. Yougou, overlooking the palace of the Lord of Thunder."
"I will have a joyful showdown against the legendary Great Tengu of Yougou upon the roof of Tenshukaku."
"...And then I'll bring that tengu's mask back to Ayame and Mouun as a souvenir!"

At last, the tides washed all their dreams away like towers in the sand.
The tengu's mask, shining like a crimson star, was shattered like seashore gravel amidst the chaotic battle,
Nor would the shrine maiden who shone like moonlight into the young man's soul ever return again,
While the Akuou himself would face the blinding ray of lightning alongside the Great Serpent.

73 comments

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    • Kael on 17 October 2021 at 7:03 pm
    • Reply

    Im a low spender. Only spent my money on monthly subcribe and 1 time in battle pass to get serpent spine for my eula. (I starting play the game at eula banner). Somehow when i want to try to get rust for my yoimiya, I got 6 of akuomaru straight from 4*10.

    Is this weapon worth to upgraded to the max level and replace serpent spine r1?
    Currently i use serpent spine r1 for my eula.

    My usual party are: Eula, Xinyan, Bennet, Raiden.

    Thanks.

    • CaptainBeidou on 14 October 2021 at 9:33 am
    • Reply

    There are lots of videos already comparing this to 5 star and even to Eula’s BiS weapon (SoBP), although Song R1 > Akuo R1 (close enough), but maybe Akuo R3 > Song R1, I hope someone will showcase what an R5 can do, cause R1 seems not game changing as Sealord R5 exist with no conditions needed. I wonder which lore-wise wielder of this weapon (future character), but it really looks good on Eula though (way cooler than SoBP). I haven’t seen it on Beidou test yet.

    • Izah DLP on 14 October 2021 at 3:19 am
    • Reply

    Inazuma’s the best thing to ever happen to Beidou mains lmao. First Sea-Lord, now this? And this weapon is part of a set (bow and polearm also get a version iirc)? Goodness gracious.

    • aaa on 13 October 2021 at 9:50 pm
    • Reply

    is this gonna be included in the standard banner?

      • Usha Gusha on 15 October 2021 at 5:36 am
      • Reply

      no

    • moomoo on 12 October 2021 at 9:02 pm
    • Reply

    why is there a cap of 40% bonus burst dmg when the most u could get is 39.6% with ei and 3 80 cost chars? the cap cant even be reached until they make another 90 cost burst

      • Eemono on 13 October 2021 at 9:14 pm
      • Reply

      The question is: why not? Why should you want a lower cap on it when you can just leave it like this? Maybe there will be more characters in the future that have super high cost bursts. And even if not see it just as if there was no cap. It’s that easy

      • Rattenffanger on 13 October 2021 at 9:23 pm
      • Reply

      After rounding the number 39.6% it would get to 40%. Assuming that’s how it works, it checks out with the description

    • M on 12 October 2021 at 6:01 pm
    • Reply

    This weapon at R1 beats my Eula’s R4 Snow-Tombed and my Beidou’s R5 Sea Lord. Wow. Such a power creep :O

      • Ayato_Byakuya on 13 October 2021 at 10:25 am
      • Reply

      hmm imagine r3 / r5, against 5 stars. by paper it already beats sea lord r5 at r1 (even if you won’t hit the max bonus, assuming you have 1-2 60 burst cost in the team) so on ave. 34-37% , on the other hand r5 sea lord = 24% and an extra 200% atk per 15 secs (lets say +5k dmg).
      also base atk is a bit higher
      510 (water sword) with 41.3% ATK
      454 (sea lord) with 55.1% ATK
      higher base is usually better

      this really becomes better and better on higher refines (of course its not a free weapon, so its reasonable), however this weapon is not recommended on low burst cost (diluc, chongyun) and on non-dmg burst (noelle), and as of now, requires raiden to hit max bonus 39.6% (which is fvckingly fitting as she buffs all of your team’s burst)

      i think this weapon is so good for beidou (overall benefits), then next eula (burst dps + aesthetics)

      • Ghostly on 15 October 2021 at 9:18 am
      • Reply

      But you can get Sea Lord and Snowtombed for free. This is gacha weapon, with a pretty rare drop rate (1 out of 5 rare weapons)

      It’s not much of a power creep, because you’re not guaranteed to get it or even R2… In fact, if you think about it, only whales can get R5, but since they are whales, why don’t they just get R5 Song or Wolfs or Unforged?

    • smartypants on 12 October 2021 at 2:28 am
    • Reply

    Inferior to Serpent Spine, NEXT!!!

      • Le Trung Tinh on 13 October 2021 at 4:52 pm
      • Reply

      Better than serpent spine for Beidou, or any burst dps support in the future

    • Eula supremacy on 11 October 2021 at 3:58 pm
    • Reply

    This would be so good in a eula-beidou-raiden-diona team because the energy costs of their bursts will not only benefit raiden but eula and beidou if you get two copies could be dipping out of their 80 and 90 burst costs as well.

    • Screpe on 9 October 2021 at 2:17 pm
    • Reply

    Looks very promising for Eula. If it becomes her BIS 4-star, I might even pull on the weapon banner.

    • PoorBum on 6 October 2021 at 1:04 pm
    • Reply

    waiting for comparison among these 3 weapons: Luxurious Sea-lord, Blackcliff, Akuoumaru

      • WhoTao on 9 October 2021 at 8:05 am
      • Reply

      Blackcliff would be the number 3 spot due to the fact :-
      A) You need to kill other enemys for its passive meaning against bosses that would be so bad
      B) The ATK% is considered while calculating the damage …. OR in other world if you had 55% from a specific sorces (Artifact) then the 12% will be added making it 67% in other words the more ATK% you have (which what would all of us will be using as our goblet) the less effective it becomes

      While Sea-lord + AKUOUMARU will give a element burst increase meaning after everything is calculated . The final result Will be then increased by the Element burst %

      In other words Sea-lord or AKUOUMARU will be better as a weapon (And most meta claymore user are meta because of there element Burst : Beidou , EULA ….. ETC)

    • Sayu Simp on 5 October 2021 at 10:28 pm
    • Reply

    Hoping to get this soon since i have a weird luck of getting claymores(r4 The Bell) from gacha

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