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Sangonomiya Kokomi — Hydro Catalyst character | Genshin Impact

Watatsumi Island

Sangonomiya Kokomi

Build guide · Genshin Impact

5-star
HydroCatalystMain DPS

Pearl of Wisdom

The best Sangonomiya Kokomi build in Genshin Impact (Version 7.0) is Everlasting Moonglow with Heart of Depth. Updated August 22, 2026

How this build was derivedSangonomiya Kokomi’s kit multiplies HP, read from the scaling rows on the Elemental Skill and Burst rather than from the ability prose. Weapons and artifact sets below are ranked on whether their stat and their passive text act on that stat. This is a reading of the game’s own numbers, not a community tier consensus — a set that wins a niche team composition will not show up here.

Weapons

Also works: Jadefall's Splendor, Surf's Up, Ash-Graven Drinking Horn, Sacrificial Jade

Artifacts

Main stats

Sands
HP%
Goblet
Hydro DMG Bonus
Circlet
CRIT Rate / CRIT DMG

Substat priority

  1. 1CRIT RateBest
  2. 2CRIT DMG
  3. 3HP%
  4. 4Energy Recharge

Talent priority

  1. #1

    Normal Attack

    Max first

  2. #2

    Elemental Skill

    Then

  3. #3

    Elemental Burst

    Next

Teams

No composition on the site currently uses Sangonomiya Kokomi. The best teams page carries the ones that are written up.

Genshin Impact 5★ Hydro Catalyst Main DPS

Sangonomiya Kokomi build summary

Updated August 22, 2026

Everlasting Moonglow is the closest fit on the game's own numbers: Sangonomiya Kokomi's kit multiplies HP, and a weapon is ranked here on whether its ascension stat and its passive act on that stat. Nocturne's Curtain Call, Ring of Yaxche and Jadefall's Splendor come next. No playtested ranking has been imported for Sangonomiya Kokomi, so this is arithmetic over the kit data rather than a damage measurement.

Run Heart of Depth on Sangonomiya Kokomi, with Nymph's Dream and Tenacity of the Millelith behind it. Main stats are HP% sands, Hydro DMG Bonus goblet, CRIT Rate / CRIT DMG circlet. Roll substats in the order CRIT Rate > CRIT DMG > HP% > Energy Recharge.

Talent priority is Normal Attack > Elemental Skill > Elemental Burst. The Elemental Burst costs 70 energy, which is what an Energy Recharge target has to clear.

Role
Main DPS / Healer
Artifact set
Heart of Depth
Main stats
HP% sands, Hydro DMG Bonus goblet, CRIT Rate / CRIT DMG circlet
Substats priority
CRIT Rate > CRIT DMG > HP% > Energy Recharge
Talent priority
Normal Attack > Elemental Skill > Elemental Burst
Burst energy cost
70 energy
Key ascension material
168× Sango Pearl
Last updated
August 22, 2026

Combat talents

Sangonomiya Kokomi The Shape of Water — normal attack icon | Genshin Impact
Normal

The Shape of Water

Normal Attack Performs up to 3 consecutive attacks that take the form of swimming fish, dealing Hydro DMG.

Charged Attack Consumes a certain amount of Stamina to deal AoE Hydro DMG after a short casting time.

Plunging Attack Gathering the might of Hydro, Kokomi plunges towards the ground from mid-air, damaging all opponents in her path. Deals AoE Hydro DMG upon impact with the ground.

Talent level

10 is the cap from materials; C3 and C5 add +3.

1-Hit DMG
123.1%
2-Hit DMG
110.8%
3-Hit DMG
169.8%
Charged Attack DMG
267.0%
Charged Attack Stamina Cost
50.0
Plunge DMG
112.3%
Low/High Plunge DMG
224.6%/280.6%
All 15 levels
Attribute123456789101112131415
1-Hit DMG68.4%73.5%78.6%85.5%90.6%95.7%102.6%109.4%116.2%123.1%129.9%136.8%145.3%153.8%162.4%
2-Hit DMG61.5%66.2%70.8%76.9%81.5%86.2%92.3%98.5%104.6%110.8%116.9%123.1%130.8%138.5%146.2%
3-Hit DMG94.3%101.4%108.5%117.9%125.0%132.0%141.5%150.9%160.3%169.8%179.2%188.6%200.4%212.2%224.0%
Charged Attack DMG148.3%159.4%170.6%185.4%196.5%207.6%222.5%237.3%252.1%267.0%281.8%296.6%315.2%333.7%352.3%
Charged Attack Stamina Cost50.050.050.050.050.050.050.050.050.050.050.050.050.050.050.0
Plunge DMG56.8%61.5%66.1%72.7%77.3%82.6%89.9%97.1%104.4%112.3%120.3%128.2%136.1%144.1%152.0%
Low/High Plunge DMG113.6%/141.9%122.9%/153.5%132.1%/165.0%145.3%/181.5%154.6%/193.1%165.2%/206.3%179.7%/224.5%194.2%/242.6%208.8%/260.8%224.6%/280.6%240.5%/300.4%256.3%/320.2%272.2%/340.0%288.0%/359.8%303.9%/379.6%
Sangonomiya Kokomi Kurage's Oath — elemental skill icon | Genshin Impact
Skill

Kurage's Oath

Summons a "Bake-Kurage" created from water that can heal her allies. Using this skill will apply the Wet status to Sangonomiya Kokomi.

Bake-Kurage Deals Hydro DMG to surrounding opponents and heals nearby active characters at fixed intervals. This healing is based on Kokomi's Max HP.

Kokomi needs timely "refreshment" in order to maintain optimal work efficiency.

Talent level

10 is the cap from materials; C3 and C5 add +3.

Regeneration
7.9% Max HP+932
Ripple DMG
196.5%
Duration
12.0s
CD
20.0s
All 15 levels
Attribute123456789101112131415
Regeneration4.4% Max HP+4244.7% Max HP+4665.1% Max HP+5125.5% Max HP+5615.8% Max HP+6146.2% Max HP+6716.6% Max HP+7317.0% Max HP+7957.5% Max HP+8627.9% Max HP+9328.4% Max HP+10068.8% Max HP+10849.3% Max HP+11659.9% Max HP+125010.4% Max HP+1338
Ripple DMG109.2%117.4%125.6%136.5%144.7%152.9%163.8%174.7%185.6%196.5%207.5%218.4%232.0%245.7%259.3%
Duration12.0s12.0s12.0s12.0s12.0s12.0s12.0s12.0s12.0s12.0s12.0s12.0s12.0s12.0s12.0s
CD20.0s20.0s20.0s20.0s20.0s20.0s20.0s20.0s20.0s20.0s20.0s20.0s20.0s20.0s20.0s
Sangonomiya Kokomi Nereid's Ascension — elemental burst icon | Genshin Impact
Burst

Nereid's Ascension

Summons the might of Watatsumi, dealing Hydro DMG to surrounding opponents, before robing Kokomi in a Ceremonial Garment made from the flowing waters of Sangonomiya.

Ceremonial Garment · Sangonomiya Kokomi's Normal Attack, Charged Attack and Bake-Kurage DMG are increased based on her Max HP. · When her Normal and Charged Attacks hit opponents, Kokomi will restore HP for all nearby party members, and the amount restored is based on her Max HP. · Increases Sangonomiya Kokomi's resistance to interruption and allows her to walk on the water's surface.

These effects will be cleared once Sangonomiya Kokomi leaves the field.

Clear light coalesces into robes around Her Excellency, Sangonomiya Kokomi, reflecting her magnificent form.

Talent level

10 is the cap from materials; C3 and C5 add +3.

Skill DMG
18.7% Max HP
Normal Attack DMG Bonus
8.7% Max HP
Charged Attack DMG Bonus
12.2% Max HP
Bake-Kurage DMG Bonus
12.8% Max HP
HP Regeneration Per Hit
1.45% Max HP+169
Duration
10.0s
CD
18.0s
Energy Cost
70
All 15 levels
Attribute123456789101112131415
Skill DMG10.4% Max HP11.2% Max HP12.0% Max HP13.0% Max HP13.8% Max HP14.6% Max HP15.6% Max HP16.7% Max HP17.7% Max HP18.7% Max HP19.8% Max HP20.8% Max HP22.1% Max HP23.4% Max HP24.7% Max HP
Normal Attack DMG Bonus4.8% Max HP5.2% Max HP5.6% Max HP6.0% Max HP6.4% Max HP6.8% Max HP7.3% Max HP7.7% Max HP8.2% Max HP8.7% Max HP9.2% Max HP9.7% Max HP10.3% Max HP10.9% Max HP11.5% Max HP
Charged Attack DMG Bonus6.8% Max HP7.3% Max HP7.8% Max HP8.5% Max HP9.0% Max HP9.5% Max HP10.2% Max HP10.8% Max HP11.5% Max HP12.2% Max HP12.9% Max HP13.6% Max HP14.4% Max HP15.2% Max HP16.1% Max HP
Bake-Kurage DMG Bonus7.1% Max HP7.6% Max HP8.2% Max HP8.9% Max HP9.4% Max HP9.9% Max HP10.6% Max HP11.4% Max HP12.1% Max HP12.8% Max HP13.5% Max HP14.2% Max HP15.1% Max HP16.0% Max HP16.9% Max HP
HP Regeneration Per Hit0.81% Max HP+770.87% Max HP+850.93% Max HP+931.01% Max HP+1021.07% Max HP+1121.13% Max HP+1221.21% Max HP+1331.29% Max HP+1441.37% Max HP+1571.45% Max HP+1691.54% Max HP+1831.62% Max HP+1971.72% Max HP+2121.82% Max HP+2271.92% Max HP+243
Duration10.0s10.0s10.0s10.0s10.0s10.0s10.0s10.0s10.0s10.0s10.0s10.0s10.0s10.0s10.0s
CD18.0s18.0s18.0s18.0s18.0s18.0s18.0s18.0s18.0s18.0s18.0s18.0s18.0s18.0s18.0s
Energy Cost707070707070707070707070707070

Passives

Sangonomiya Kokomi Tamakushi Casket — passive icon | Genshin Impact
Passive

Tamakushi Casket

If Sangonomiya Kokomi's own Bake-Kurage is on the field when she uses Nereid's Ascension, the Bake-Kurage's duration will be refreshed.

Sangonomiya Kokomi Song of Pearls — passive icon | Genshin Impact
Passive

Song of Pearls

While donning the Ceremonial Garment created by Nereid's Ascension, the Normal and Charged Attack DMG Bonus Sangonomiya Kokomi gains based on her Max HP will receive a further increase based on 15% of her Healing Bonus.

Sangonomiya Kokomi Princess of Watatsumi — passive icon | Genshin Impact
Passive

Princess of Watatsumi

Decreases swimming Stamina consumption for your own party members by 20%. Not stackable with Passive Talents that provide the exact same effects.

Sangonomiya Kokomi Flawless Strategy — passive icon | Genshin Impact
Passive

Flawless Strategy

Sangonomiya Kokomi has a 25% Healing Bonus, but a 100% decrease in CRIT Rate.

Full bill

Level 90 and every talent to 10

5,377,500

Mora 17 material lines

Ascension to 90

420,000

Mora 9 materials · 6 steps

All 3 talents to 10

4,957,500

Mora 3× the single-talent bill

Ascension

  1. Lv 40
    Varunada Lazurite Sliver — ascension material | Genshin ImpactVarunada Lazurite Sliver ×1
    Sango Pearl — ascension material | Genshin ImpactSango Pearl ×3
    Spectral Husk — ascension material | Genshin ImpactSpectral Husk ×3

    20,000Mora

  2. Lv 50
    Dew of Repudiation — ascension material | Genshin ImpactDew of Repudiation ×2
    Varunada Lazurite Fragment — ascension material | Genshin ImpactVarunada Lazurite Fragment ×3
    Sango Pearl — ascension material | Genshin ImpactSango Pearl ×10
    Spectral Husk — ascension material | Genshin ImpactSpectral Husk ×15

    40,000Mora

  3. Lv 60
    Dew of Repudiation — ascension material | Genshin ImpactDew of Repudiation ×4
    Varunada Lazurite Fragment — ascension material | Genshin ImpactVarunada Lazurite Fragment ×6
    Spectral Heart — ascension material | Genshin ImpactSpectral Heart ×12
    Sango Pearl — ascension material | Genshin ImpactSango Pearl ×20

    60,000Mora

  4. Lv 70
    Dew of Repudiation — ascension material | Genshin ImpactDew of Repudiation ×8
    Varunada Lazurite Chunk — ascension material | Genshin ImpactVarunada Lazurite Chunk ×3
    Spectral Heart — ascension material | Genshin ImpactSpectral Heart ×18
    Sango Pearl — ascension material | Genshin ImpactSango Pearl ×30

    80,000Mora

  5. Lv 80
    Dew of Repudiation — ascension material | Genshin ImpactDew of Repudiation ×12
    Varunada Lazurite Chunk — ascension material | Genshin ImpactVarunada Lazurite Chunk ×6
    Spectral Nucleus — ascension material | Genshin ImpactSpectral Nucleus ×12
    Sango Pearl — ascension material | Genshin ImpactSango Pearl ×45

    100,000Mora

  6. Lv 90
    Varunada Lazurite Gemstone — ascension material | Genshin ImpactVarunada Lazurite Gemstone ×6
    Dew of Repudiation — ascension material | Genshin ImpactDew of Repudiation ×20
    Spectral Nucleus — ascension material | Genshin ImpactSpectral Nucleus ×24
    Sango Pearl — ascension material | Genshin ImpactSango Pearl ×60

    120,000Mora

Total to level 90

420,000 Mora

Varunada Lazurite Gemstone — ascension material | Genshin ImpactVarunada Lazurite Gemstone ×6
Dew of Repudiation — ascension material | Genshin ImpactDew of Repudiation ×46
Varunada Lazurite Chunk — ascension material | Genshin ImpactVarunada Lazurite Chunk ×9
Spectral Nucleus — ascension material | Genshin ImpactSpectral Nucleus ×36
Varunada Lazurite Fragment — ascension material | Genshin ImpactVarunada Lazurite Fragment ×9
Spectral Heart — ascension material | Genshin ImpactSpectral Heart ×30
Varunada Lazurite Sliver — ascension material | Genshin ImpactVarunada Lazurite Sliver ×1
Sango Pearl — ascension material | Genshin ImpactSango Pearl ×168
Spectral Husk — ascension material | Genshin ImpactSpectral Husk ×18

Talent materials

  1. → 2
    Teachings of Transience — ascension material | Genshin ImpactTeachings of Transience ×3
    Spectral Husk — ascension material | Genshin ImpactSpectral Husk ×6

    12,500Mora

  2. → 3
    Guide to Transience — ascension material | Genshin ImpactGuide to Transience ×2
    Spectral Heart — ascension material | Genshin ImpactSpectral Heart ×3

    17,500Mora

  3. → 4
    Guide to Transience — ascension material | Genshin ImpactGuide to Transience ×4
    Spectral Heart — ascension material | Genshin ImpactSpectral Heart ×4

    25,000Mora

  4. → 5
    Guide to Transience — ascension material | Genshin ImpactGuide to Transience ×6
    Spectral Heart — ascension material | Genshin ImpactSpectral Heart ×6

    30,000Mora

  5. → 6
    Guide to Transience — ascension material | Genshin ImpactGuide to Transience ×9
    Spectral Heart — ascension material | Genshin ImpactSpectral Heart ×9

    37,500Mora

  6. → 7
    Hellfire Butterfly — ascension material | Genshin ImpactHellfire Butterfly ×1
    Philosophies of Transience — ascension material | Genshin ImpactPhilosophies of Transience ×4
    Spectral Nucleus — ascension material | Genshin ImpactSpectral Nucleus ×4

    120,000Mora

  7. → 8
    Hellfire Butterfly — ascension material | Genshin ImpactHellfire Butterfly ×1
    Philosophies of Transience — ascension material | Genshin ImpactPhilosophies of Transience ×6
    Spectral Nucleus — ascension material | Genshin ImpactSpectral Nucleus ×6

    260,000Mora

  8. → 9
    Hellfire Butterfly — ascension material | Genshin ImpactHellfire Butterfly ×2
    Philosophies of Transience — ascension material | Genshin ImpactPhilosophies of Transience ×12
    Spectral Nucleus — ascension material | Genshin ImpactSpectral Nucleus ×9

    450,000Mora

  9. → 10
    Crown of Insight — ascension material | Genshin ImpactCrown of Insight ×1
    Hellfire Butterfly — ascension material | Genshin ImpactHellfire Butterfly ×2
    Philosophies of Transience — ascension material | Genshin ImpactPhilosophies of Transience ×16
    Spectral Nucleus — ascension material | Genshin ImpactSpectral Nucleus ×12

    700,000Mora

One talent to 10

1,652,500 Mora

Crown of Insight — ascension material | Genshin ImpactCrown of Insight ×1
Hellfire Butterfly — ascension material | Genshin ImpactHellfire Butterfly ×6
Philosophies of Transience — ascension material | Genshin ImpactPhilosophies of Transience ×38
Guide to Transience — ascension material | Genshin ImpactGuide to Transience ×21
Spectral Nucleus — ascension material | Genshin ImpactSpectral Nucleus ×31
Spectral Heart — ascension material | Genshin ImpactSpectral Heart ×22
Teachings of Transience — ascension material | Genshin ImpactTeachings of Transience ×3
Spectral Husk — ascension material | Genshin ImpactSpectral Husk ×6

All 3 talents to 10

4,957,500 Mora

Crown of Insight — ascension material | Genshin ImpactCrown of Insight ×3
Hellfire Butterfly — ascension material | Genshin ImpactHellfire Butterfly ×18
Philosophies of Transience — ascension material | Genshin ImpactPhilosophies of Transience ×114
Guide to Transience — ascension material | Genshin ImpactGuide to Transience ×63
Spectral Nucleus — ascension material | Genshin ImpactSpectral Nucleus ×93
Spectral Heart — ascension material | Genshin ImpactSpectral Heart ×66
Teachings of Transience — ascension material | Genshin ImpactTeachings of Transience ×9
Spectral Husk — ascension material | Genshin ImpactSpectral Husk ×18

Sangonomiya Kokomi’s constellation — Dracaena Somnolenta

  1. Sangonomiya Kokomi C1 At Water's Edge — constellation | Genshin ImpactC1

    At Water's Edge

    While donning the Ceremonial Garment created by Nereid's Ascension, the final Normal Attack in Sangonomiya Kokomi's combo will unleash a swimming fish to deal 30% of her Max HP as Hydro DMG. This DMG is not considered Normal Attack DMG.

  2. Sangonomiya Kokomi C2 The Clouds Like Waves Rippling — constellation | Genshin ImpactC2

    The Clouds Like Waves Rippling

    Sangonomiya Kokomi gains the following Healing Bonuses with regard to characters with 50% or less HP via the following methods: · Kurage's Oath Bake-Kurage: 4.5% of Kokomi's Max HP. · Nereid's Ascension Normal and Charged Attacks: 0.6% of Kokomi's Max HP.

  3. Sangonomiya Kokomi C3 The Moon, A Ship O'er the Seas — constellation | Genshin ImpactC3

    The Moon, A Ship O'er the Seas

    Increases the Level of Nereid's Ascension by 3. Maximum upgrade level is 15.

  4. Sangonomiya Kokomi C4 The Moon Overlooks the Waters — constellation | Genshin ImpactC4

    The Moon Overlooks the Waters

    While donning the Ceremonial Garment created by Nereid's Ascension, Sangonomiya Kokomi's Normal Attack SPD is increased by 10%, and Normal Attacks that hit opponents will restore 0.8 Energy for her. This effect can occur once every 0.2s.

  5. Sangonomiya Kokomi C5 All Streams Flow to the Sea — constellation | Genshin ImpactC5

    All Streams Flow to the Sea

    Increases the Level of Kurage's Oath by 3. Maximum upgrade level is 15.

  6. Sangonomiya Kokomi C6 Sango Isshin — constellation | Genshin ImpactC6

    Sango Isshin

    While donning the Ceremonial Garment created by Nereid's Ascension, Sangonomiya Kokomi gains a 40% Hydro DMG Bonus for 4s when her Normal and Charged Attacks heal, or would heal, any party member with 80% or more HP.

Sangonomiya Kokomi’s outfits

  • Sangonomiya Kokomi — Sparkling Coralbone outfit | Genshin Impact
    Default

    Sparkling Coralbone

    Sangonomiya Kokomi's outfit. A noble's dress decorated with little precious objects produced in Watatsumi Island.

Names, descriptions and art from the game data. Pick an outfit on the stage to see it full size.

Sangonomiya Kokomi FAQ

What element is Sangonomiya Kokomi?
Sangonomiya Kokomi is a 5-star Hydro character from Inazuma who uses a catalyst, released in version 2.1.
What stat does Sangonomiya Kokomi scale on?
Sangonomiya Kokomi's abilities multiply HP. That is read from the scaling rows on the Elemental Skill and Burst, not from the ability description, so it reflects what the game actually multiplies rather than what the text mentions.
What is the best weapon for Sangonomiya Kokomi?
Everlasting Moonglow is the closest fit on the data: it is a 5-star catalyst with HP as its ascension stat, and its passive acts on HP. Ring of Yaxche is the best 4-star alternative.
Which artifact set should Sangonomiya Kokomi use?
Heart of Depth. Its 2-piece bonus is: Hydro DMG Bonus +15% Its 4-piece bonus is: After using Elemental Skill, increases Normal Attack and Charged Attack DMG by 30% for 15s.
How much does it cost to level Sangonomiya Kokomi's talents?
Taking one talent from level 1 to 10 costs 1,652,500 Mora and 38× Philosophies of Transience among other materials. The Materials tab lists every item per level.
What does Sangonomiya Kokomi C1 do?
At Water's Edge: While donning the Ceremonial Garment created by Nereid's Ascension, the final Normal Attack in Sangonomiya Kokomi's combo will unleash a swimming fish to deal 30% of her Max HP as Hydro DMG. This DMG is not considered Normal Attack DMG.
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