Kokomi, the Divine Priestess of Watatsumi Island

Sangonomiya Kokomi Genshin Impact Character Art

Rarity	(5-Star)
Element	Hydro
Weapon	Catalyst
Best Role	Healer / Hydro Applicator
Stat Priority	HP% > ER > EM (Bloom)
Tier	SS (Bloom/Freeze Core)

Sangonomiya Kokomi is the Divine Priestess of Watatsumi Island and the queen of comfort. With her ability to heal while applying Hydro in a massive AoE, she anchors the strongest Freeze teams and is indispensable for Nilou Bloom teams. She trades critical hits for consistency and immortality.

Pros

Best off-field AoE Hydro application (Jellyfish).
Massive healing output (can facetank almost anything).
Perfect holder for Thrilling Tales (TTDS) and Tenacity.
Essential for Nilou Bloom teams (high Hydro app + healing).
Extremely easy to build (HP% gear, no Crit).

Cons

Cannot CRIT (-100% Crit Rate passive).
Jellyfish is stationary (can't move it like Fischl's Oz).
Energy hungry if played as solo Hydro off-field.
Burst must be used to refresh Jellyfish duration (timing is key).

Quick Guide (TL;DR)

If you don't have time for the math, here is the cheat sheet.

Best Artifact (Healer/Support): 4pc Tenacity of the Millelith (Freeze) or 4pc Ocean-Hued Clam (Driver).
Best Artifact (Bloom): 4pc Flower of Paradise Lost or 4pc Gilded Dreams (Full EM).
Best Weapon: Thrilling Tales (TTDS) (Support King).
F2P Weapon: Prototype Amber (Energy & Healing).
Bloom Weapon: Sacrificial Fragments (EM & Reset).
Main Stats (General): SANDS: HP% / ER | GOBLET: HP% / Hydro | CIRCLET: Healing Bonus.
Talent Priority: Elemental Skill > Elemental Burst > Normal Attack.
Top Team: Kokomi + Ayaka + Shenhe + Kazuha (Premium Freeze).

Pro Tip: Jellyfish Refresh: Kokomi's Elemental Skill has a 12s duration and 20s cooldown. However, using her Burst (Q) resets the duration of the *existing* Jellyfish on field. Cast Q right before the Jellyfish expires to maintain 100% uptime.

Ascension & Talent Materials

Category	Material Name	Source
Ascension	Sango Pearl	Watatsumi Island (Inazuma)
Boss Drop	Dew of Repudiation	Hydro Hypostasis (Watatsumi)
Talent Books	Teachings of Transience	Violet Court (Mon/Thu/Sun)
Common Mob	Spectral Core	Specters (Inazuma)

Talent Breakdown & Mechanics

Elemental Skill: Kurage's Oath

Bake-Kurage: Summons a jellyfish that heals the active character and deals AoE Hydro DMG every 2 seconds.
Hydro Application: The jellyfish applies Hydro every tick (no ICD). This makes it the best off-field Hydro source for Freeze teams.
Particle Gen: Generates particles periodically (RNG based), which can be inconsistent.
Self-Wet: Applies Wet status to Kokomi only on cast. Unlike Barbara, she doesn't keep wetting you, making her safer against Cryo enemies.

Elemental Burst: Nereid's Ascension

Cost: 70 Energy | Cooldown: 18s | Duration: 10s
Ceremonial Garment: Increases Normal/Charged/Skill DMG based on Max HP.
Team Healing: Normal/Charged attacks heal the entire party.
Duration Reset: Casting Burst resets the duration of an active Jellyfish. This allows for 100% uptime if timed correctly.
Water Walking: Allows Kokomi to walk on water for the duration (Exploration gimmick).

Passive: Flawless Strategy

The Trade-off: Kokomi gains a 25% Healing Bonus, but her Crit Rate is decreased by 100%. This effectively means she cannot crit. Do not build Crit Rate/DMG on her.

Talent Priority Order:

Elemental Skill (Level 10) - Healing and Off-field DMG.
Elemental Burst (Level 9) - For On-field Driver mode.
Normal Attack (Level 6) - Only if driving.

Stat Requirements & ER Thresholds

Kokomi needs ER to refresh her Jellyfish via Burst. If you miss the refresh, her value drops significantly.

Team Context	Role	ER Requirement
Freeze (Ayaka/Ganyu)	Off-Field Support	200% - 220%
Taser / Mono Hydro	On-Field Driver	160% - 180%
Nilou Bloom	Reaction Trigger	160% (Sac Frags Helps)

Substat Priority (General):

Energy Recharge (Priority #1 for Jellyfish uptime)
HP% (Scaling)
Flat HP
Elemental Mastery (Bonus for reaction teams)

Best Artifacts Comparison

Set Name	Role	Reasoning
4pc Tenacity of the Millelith	BiS Support	Her Jellyfish hits every 2s, refreshing the 20% ATK buff perfectly. Best for Ayaka Freeze teams.
4pc Ocean-Hued Clam	On-Field Driver	Converts her massive healing into Physical DMG bubbles (30k pops). Best if she is attacking on-field or in teams that don't need ATK buffs (like Neuvillette).
4pc Flower of Paradise Lost	Bloom Trigger	Maximizes Bloom seed damage. Only use in Nilou teams where Kokomi builds full EM.

Weapon Rankings

Weapon	Type	Performance	Notes
Thrilling Tales (TTDS)	HP%	S+ (Support)	3-Star Weapon. Grants 48% ATK to your DPS. HP substat helps healing. Best for Freeze teams.
Prototype Amber	HP%	S (F2P / Energy)	Craftable. Refunds energy after burst (helps uptime) and heals the team. Best for Clam/Driver builds.
Everlasting Moonglow	HP%	A (Signature)	Her signature weapon. Looks pretty, gives Healing Bonus and Energy. Not worth pulling over TTDS/Amber efficiency usually.
Sacrificial Fragments	EM	A (Bloom)	High EM for Bloom teams. Allows you to reposition the Jellyfish if you mess up.

Constellation Value

Kokomi is fully complete at C0. Her constellations are generally for DPS increase or comfort.

C1: At Water's Edge - (Damage) Adds a swimming fish to her final Normal Attack string that deals 30% HP damage. Good for on-field driver damage, but requires completing the NA combo.
C4: The Moon Overlooks the Waters - (Energy) Restores energy and increases Attack Speed during Burst. Helps with ER requirements.
C6: Sango Isshin - (Damage Buff) Grants 40% Hydro DMG Bonus when healing allies >80% HP. Turns her into a potent Hydro DPS.

Verdict: C0 is perfect. Constellations are not recommended unless you main her on-field.

Top Team Compositions

1. Shinra Tensei (Premium Freeze)

Main DPS: Ayaka / Ganyu
Support: Shenhe / Rosaria
Anemo: Kazuha
Hydro: Kokomi (Tenacity + TTDS)

Why it works: Kokomi consolidates Healing and Hydro application. With Tenacity and TTDS, she gives Ayaka a massive 68% ATK buff. Her Hydro app is AoE, freezing entire groups.

2. Nilou Bloom

Core: Nilou
Driver: Kokomi (Full EM)
Dendro: Nahida
Flex: Collei / Dendro MC

Why it works: Kokomi has high HP, allowing her to tank Bountiful Core explosions. She applies Hydro fast enough to create cores constantly. In this team, she is built with EM to maximize reaction damage.

Rotations & Combos

Freeze Rotation (Jellyfish Refresh):
Kokomi E > Supports (Kazuha/Shenhe) > Kokomi Q (Refreshes E duration) > Ayaka Q

Tip: If using TTDS, make sure you swap directly from Kokomi to your Main DPS (Ayaka) to pass the ATK buff. Do not switch to Kazuha in between.

Frequently Asked Questions

Mona vs. Kokomi?
Mona offers higher burst damage (Omen buff) but no healing and shorter Hydro uptime. Kokomi offers 100% Hydro uptime, massive healing, and Tenacity buff. Kokomi is generally comfier and more consistent.

Why doesn't she Crit?
Her passive reduces Crit Rate by 100%. In exchange, she gets a Healing Bonus. Building Crit on her is mathematically possible but highly inefficient. Stick to HP and Healing Bonus.

Data Source: KQM Standards. Last Updated: December 2025

Kokomi Guide: The Definitive Build & Analysis