Genshin Impact Wiki
Genshin Impact Wiki

The beloved sword of the legendary "Akuou." The blade is huge and majestic, but is surprisingly easy to wield.

Akuoumaru (Japanese: 惡王丸 Akuou-maru) is a 4-Star Claymore obtained from Weapon Event Wishes.

Ascensions and Stats

Level Base
2nd Stat
0✦ 1/20 42 9%
20/20 109 15.9%
Ascension Cost (0 → 1)
Item Mora.png 5,000 Mora
1✦ 20/40 135 15.9%
40/40 205 23.2%
Ascension Cost (1 → 2)
Item Mora.png 15,000 Mora
2✦ 40/50 231 23.2%
50/50 266 26.8%
Ascension Cost (2 → 3)
Item Mora.png 20,000 Mora
3✦ 50/60 292 26.8%
60/60 327 30.4%
Ascension Cost (3 → 4)
Item Mora.png 30,000 Mora
4✦ 60/70 353 30.4%
70/70 388 34.1%
Ascension Cost (4 → 5)
Item Mora.png 35,000 Mora
5✦ 70/80 414 34.1%
80/80 449 37.7%
Ascension Cost (5 → 6)
Item Mora.png 45,000 Mora
6✦ 80/90 475 37.7%
90/90 510 41.3%

Total Cost (0 → 6)

Item Mora.png 150,000 Mora


  • Maximum Energy capacity for a character is the energy cost of the character's burst, e.g., Dawn costs 40 energy, so Diluc has 40 Maximum Energy.


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.



Event Wishes

Akuoumaru was promoted or featured with a drop-rate boost in 1 Event Wishes:

Wish Featured Duration
Wish Epitome Invocation 2021-10-13.png
Epitome Invocation 2021-10-13
Weapon Akuoumaru.pngAkuoumaru
Weapon Rust.pngRust
October 13, 2021 – November 2, 2021

Other Languages

Language Official Name Literal Meaning
English Akuoumaru
Japanese あくおうまる
Korean 아쿠오마루
Spanish Rey del MalKing of Evil
French Akuoumaru
Russian Акуомару
Thai Akuoumaru
Vietnamese Akuoumaru
German Akuoumaru
Indonesian Akuoumaru
Portuguese Akuoumaru

Change History

Released in Version 2.2