Sword★★★★★

Calamity of Eshu

Passive: Diffusing Boundary

Base ATK 565 · Substat ATK 27.6%Lv90 R1

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Should You Pull?

Strongest on Skirk in our guide rankings, riding Diffusing Boundary. Situational weapon-banner pull — only if you already play its best users and lack a comparable alternative.

Stats

LevelLv.90

Lv.1Lv.90

Base ATK

565

Secondary

ATK 27.6%

Weapon Passive

Diffusing Boundary

RefinementR1

R1R5

While characters are protected by a Shield, DMG dealt by Normal and Charged Attacks is increased by 20%, and Normal and Charged Attack CRIT Rate is increased by 8%.

Limited 5★ — R1 already unlocks the kit. R5 is a large passive jump but an expensive vertical investment; only refine if this is a signature you play every abyss.

Best Characters

Skirk#5

Main DPS

While characters are protected by a Shield, DMG dealt by Normal and Charged Attacks is increased by 20% / 25% / 30% / 35% / 40%, and Normal and Charged Attack CRIT Rate is increased by 8% / 10% / 12% / 14% / 16%.

Compare Similar Swords

LevelLv.90

Lv.1Lv.90

Weapon	Base ATK	Secondary	Rarity
Calamity of EshuThis	565	ATK 27.6%	5★
Moonweaver's Dawn	565	ATK 27.6%	5★
Summit Shaper	608	ATK 49.6%	5★
Finale of the Deep	565	ATK 27.6%	4★
Kagotsurube Isshin	510	ATK 41.3%	4★
Lion's Roar	510	ATK 41.3%	4★