Watatsumi Island
Build guide · Genshin Impact
Pearl of Wisdom
The best Sangonomiya Kokomi build in Genshin Impact (Version 7.1) is Everlasting Moonglow with Heart of Depth.
By Lorenzo BrunoUpdated August 28, 2026Build source: derived from game data
Genshin Impact 5★ Hydro Catalyst Main DPS
Also works: Jadefall's Splendor, Surf's Up, Ash-Graven Drinking Horn, Sacrificial Jade
#1
Normal Attack
Max first
#2
Elemental Skill
Then
#3
Elemental Burst
Next
Nahida plays sub DPS in this Hyperbloom team built around Sangonomiya Kokomi, with Raiden Shogun (sub DPS) and Kaedehara Kazuha (support). Sangonomiya Kokomi heals.
Nilou plays sub DPS in this Bloom team built around Sangonomiya Kokomi, with Nahida (sub DPS) and Collei (sub DPS). Sangonomiya Kokomi and Nilou give Hydro resonance (Soothing Water: Max HP +25%). Nahida and Collei give Dendro resonance (Sprawling Greenery: Elemental Mastery +50, more after Dendro reactions). Sangonomiya Kokomi heals.
Xiangling plays sub DPS in this Vaporize team built around Sangonomiya Kokomi, with Kaedehara Kazuha (support) and Bennett (support). Xiangling and Bennett give Pyro resonance (Fervent Flames: ATK +25%). Sangonomiya Kokomi and Bennett heal.
Collei plays sub DPS in this Hyperbloom team built around Sangonomiya Kokomi, with Raiden Shogun (sub DPS) and Dendro Traveler (support). Collei and Dendro Traveler give Dendro resonance (Sprawling Greenery: Elemental Mastery +50, more after Dendro reactions). Sangonomiya Kokomi heals.
Jean plays support in this Electro-Charged team built around Sangonomiya Kokomi, with Beidou (sub DPS) and Fischl (sub DPS). Beidou and Fischl give Electro resonance (High Voltage: Electro reactions drop Electro particles). Sangonomiya Kokomi and Jean heal, Beidou shields.
Lisa plays sub DPS in this Electro-Charged team built around Sangonomiya Kokomi, with Fischl (sub DPS) and Kaedehara Kazuha (support). Lisa and Fischl give Electro resonance (High Voltage: Electro reactions drop Electro particles). Sangonomiya Kokomi heals.
Genshin Impact 5★ Hydro Catalyst Main DPS
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.
The strongest team is Sangonomiya Kokomi, Nahida, Raiden Shogun and Kaedehara Kazuha, built around Sangonomiya Kokomi: Dendro · Hyperbloom.
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.
| Attribute | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1-Hit DMG | 68.4% | 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 DMG | 61.5% | 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 DMG | 94.3% | 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 DMG | 148.3% | 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 Cost | 50.0 | 50.0 | 50.0 | 50.0 | 50.0 | 50.0 | 50.0 | 50.0 | 50.0 | 50.0 | 50.0 | 50.0 | 50.0 | 50.0 | 50.0 |
| Plunge DMG | 56.8% | 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 DMG | 113.6%/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% |
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.
| Attribute | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Regeneration | 4.4% Max HP+424 | 4.7% Max HP+466 | 5.1% Max HP+512 | 5.5% Max HP+561 | 5.8% Max HP+614 | 6.2% Max HP+671 | 6.6% Max HP+731 | 7.0% Max HP+795 | 7.5% Max HP+862 | 7.9% Max HP+932 | 8.4% Max HP+1006 | 8.8% Max HP+1084 | 9.3% Max HP+1165 | 9.9% Max HP+1250 | 10.4% Max HP+1338 |
| Ripple DMG | 109.2% | 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% |
| Duration | 12.0s | 12.0s | 12.0s | 12.0s | 12.0s | 12.0s | 12.0s | 12.0s | 12.0s | 12.0s | 12.0s | 12.0s | 12.0s | 12.0s | 12.0s |
| CD | 20.0s | 20.0s | 20.0s | 20.0s | 20.0s | 20.0s | 20.0s | 20.0s | 20.0s | 20.0s | 20.0s | 20.0s | 20.0s | 20.0s | 20.0s |
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.
| Attribute | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Skill DMG | 10.4% Max HP | 11.2% Max HP | 12.0% Max HP | 13.0% Max HP | 13.8% Max HP | 14.6% Max HP | 15.6% Max HP | 16.7% Max HP | 17.7% Max HP | 18.7% Max HP | 19.8% Max HP | 20.8% Max HP | 22.1% Max HP | 23.4% Max HP | 24.7% Max HP |
| Normal Attack DMG Bonus | 4.8% Max HP | 5.2% Max HP | 5.6% Max HP | 6.0% Max HP | 6.4% Max HP | 6.8% Max HP | 7.3% Max HP | 7.7% Max HP | 8.2% Max HP | 8.7% Max HP | 9.2% Max HP | 9.7% Max HP | 10.3% Max HP | 10.9% Max HP | 11.5% Max HP |
| Charged Attack DMG Bonus | 6.8% Max HP | 7.3% Max HP | 7.8% Max HP | 8.5% Max HP | 9.0% Max HP | 9.5% Max HP | 10.2% Max HP | 10.8% Max HP | 11.5% Max HP | 12.2% Max HP | 12.9% Max HP | 13.6% Max HP | 14.4% Max HP | 15.2% Max HP | 16.1% Max HP |
| Bake-Kurage DMG Bonus | 7.1% Max HP | 7.6% Max HP | 8.2% Max HP | 8.9% Max HP | 9.4% Max HP | 9.9% Max HP | 10.6% Max HP | 11.4% Max HP | 12.1% Max HP | 12.8% Max HP | 13.5% Max HP | 14.2% Max HP | 15.1% Max HP | 16.0% Max HP | 16.9% Max HP |
| HP Regeneration Per Hit | 0.81% Max HP+77 | 0.87% Max HP+85 | 0.93% Max HP+93 | 1.01% Max HP+102 | 1.07% Max HP+112 | 1.13% Max HP+122 | 1.21% Max HP+133 | 1.29% Max HP+144 | 1.37% Max HP+157 | 1.45% Max HP+169 | 1.54% Max HP+183 | 1.62% Max HP+197 | 1.72% Max HP+212 | 1.82% Max HP+227 | 1.92% Max HP+243 |
| Duration | 10.0s | 10.0s | 10.0s | 10.0s | 10.0s | 10.0s | 10.0s | 10.0s | 10.0s | 10.0s | 10.0s | 10.0s | 10.0s | 10.0s | 10.0s |
| CD | 18.0s | 18.0s | 18.0s | 18.0s | 18.0s | 18.0s | 18.0s | 18.0s | 18.0s | 18.0s | 18.0s | 18.0s | 18.0s | 18.0s | 18.0s |
| Energy Cost | 70 | 70 | 70 | 70 | 70 | 70 | 70 | 70 | 70 | 70 | 70 | 70 | 70 | 70 | 70 |
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.
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.
Decreases swimming Stamina consumption for your own party members by 20%. Not stackable with Passive Talents that provide the exact same effects.
Sangonomiya Kokomi has a 25% Healing Bonus, but a 100% decrease in CRIT Rate.
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
Varunada Lazurite Sliver ×1
Sango Pearl ×3
Spectral Husk ×320,000Mora
Dew of Repudiation ×2
Varunada Lazurite Fragment ×3Sango Pearl ×10Spectral Husk ×1540,000Mora
Dew of Repudiation ×4Varunada Lazurite Fragment ×6
Spectral Heart ×12Sango Pearl ×2060,000Mora
Dew of Repudiation ×8
Varunada Lazurite Chunk ×3Spectral Heart ×18Sango Pearl ×3080,000Mora
Dew of Repudiation ×12Varunada Lazurite Chunk ×6
Spectral Nucleus ×12Sango Pearl ×45100,000Mora
Varunada Lazurite Gemstone ×6Dew of Repudiation ×20Spectral Nucleus ×24Sango Pearl ×60120,000Mora
Total to level 90
420,000 Mora
Varunada Lazurite Gemstone ×6Dew of Repudiation ×46Varunada Lazurite Chunk ×9Spectral Nucleus ×36Varunada Lazurite Fragment ×9Spectral Heart ×30Varunada Lazurite Sliver ×1Sango Pearl ×168Spectral Husk ×18
Teachings of Transience ×3Spectral Husk ×612,500Mora
Guide to Transience ×2Spectral Heart ×317,500Mora
Guide to Transience ×4Spectral Heart ×425,000Mora
Guide to Transience ×6Spectral Heart ×630,000Mora
Guide to Transience ×9Spectral Heart ×937,500Mora
Hellfire Butterfly ×1
Philosophies of Transience ×4Spectral Nucleus ×4120,000Mora
Hellfire Butterfly ×1Philosophies of Transience ×6Spectral Nucleus ×6260,000Mora
Hellfire Butterfly ×2Philosophies of Transience ×12Spectral Nucleus ×9450,000Mora
Crown of Insight ×1Hellfire Butterfly ×2Philosophies of Transience ×16Spectral Nucleus ×12700,000Mora
One talent to 10
1,652,500 Mora
Crown of Insight ×1Hellfire Butterfly ×6Philosophies of Transience ×38Guide to Transience ×21Spectral Nucleus ×31Spectral Heart ×22Teachings of Transience ×3Spectral Husk ×6All 3 talents to 10
4,957,500 Mora
Crown of Insight ×3Hellfire Butterfly ×18Philosophies of Transience ×114Guide to Transience ×63Spectral Nucleus ×93Spectral Heart ×66Teachings of Transience ×9Spectral Husk ×18
C1While 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.
C2Sangonomiya 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.
C3Increases the Level of Nereid's Ascension by 3. Maximum upgrade level is 15.
C4While 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.
C5Increases the Level of Kurage's Oath by 3. Maximum upgrade level is 15.
C6While 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 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 is a 5-star Hydro character from Inazuma who uses a catalyst, released in version 2.1.
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.
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.
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.
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.
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.
Hydro
