
Specialist
Umiri Yahata
★★★★★
Ave Mujica
Introduction
Umiri Yahata is a 5-star character in Arknights. Umiri Yahata's class is Specialist. Faction: Ave Mujica.
On the combined Arknights tier list Umiri Yahata is C tier, 223rd of the 410 characters ranked, from where 2 community tier lists put Umiri Yahata.
Profile
Her birthday is Apr 7, and she stands 158cm tall. Studio Montagne drew her.
Stories
9Basic Info
[Name] Umiri Yahata
[Gender] Female
[Combat Experience] None
[Place of Birth] Unknown
[Date of Birth] Apr 7
[Race] Unknown
[Height] 158cm
[Infection Status]
Medical tests have confirmed that no infection is present.
Physical Exam
[Physical Strength] Normal
[Mobility] Normal
[Physical Resilience] Standard
[Tactical Acumen] Normal
[Combat Skill] Normal
[Originium Arts Assimilation] ■■
Profile
Bassist of Ave Mujica, introduced to Rhodes Island by Iris. She always displays outstanding professionalism, be it in combat or in performance.
Clinical Analysis
Imaging tests reveal clear, normal outlines of internal organs, and no abnormal shadows have been detected. Originium granules have not been detected in the circulatory system and there is no sign of infection. At this time, this operator is believed to be uninfected.
[Cell-Originium Assimilation] 0%
Umiri Yahata shows no signs of Originium infection.
[Blood Originium-Crystal Density] Undisclosed
The Medical Department has agreed not to disclose the relevant data.
Archive File 1
Our first impression was that Ave Mujica was merely a student band that had stumbled upon Rhodes Island. Our thinking changed, however, as they blended into Rhodes, and began to ask how they could help.
We were surprised at how quickly Umiri Yahata absorbed new knowledge and put it into practice, and how she took the initiative in communication and working with others, supporting her team in the same way that the bass supports the rest of the band.
She is always calm, never flustered regardless of the situation—at least, so we thought.
Archive File 2
'Umiri helps out our planning work here at Rhodes. She'll draft us a whole array of plans, all of them easy to understand and execute on. She's highly reliable, and we owe more than our fair share to her.'
A very fast learner, Umiri quickly earned the trust of many teams with her thorough planning and schedule management.
She is quick to grasp the mission objective and see it through without a hitch, making her the ideal partner.
'She's a serious and brisk worker, but there's always this distance between her and us...' So operators who work with her may feel on occasion, but quickly dismiss it, assuming they're just overthinking it.
Archive File 3
It is true that Umiri has kept her distance from those around her, but it is not because she is wary of others.
She was overly eager in her first band, frequently giving instructions that she believed would help the band succeed, but ended up drawing the ire of the other band members, causing the band to fall apart.
Archive File 4
It is easy to forget that Umiri is still a young student facing challenges appropriate to her age, so outstanding are her bass skills and management ability.
She pushes herself hard with a schedule that is packed to the brim between work and practice, as well as a rigorous training regimen.
Despite her image of perfection, Umiri can find it stressful when things do not go according to plan. Binge shopping at the Rhodes Island shop is her way of blowing off steam. While the operators there are overjoyed to see her, and take photos of her with both hands full of shopping bags as commemoration, they also remind her not to go overboard with her purchases.
Promotion Record
[Iris's Notes]
On a subconscious level, Umiri is aware that the reason she cannot establish relations of trust with others is because she cannot bare her true heart to them.
She must overcome her past trauma and step out of her comfort zone, and once again reveal her heart to her friends.
When the day should come that Umiri wakes from the dream and forgets all that transpired within, may a part of what she experienced here remain with her and give her courage—
The courage to face others with her true heart.
Stats
- HP239th of 4551,729
- ATK77th of 455809
- DEF155th of 455331
- RES2nd of 45230
- Block441st of 4470
- DP cost314th of 44622
- Redeploy380th of 45580s
- Attack interval450th of 4553.5s
At Elite 2, level 80, before trust, potentials and modules. Each bar is measured against the highest value in the Arknights roster, and the place is out of every character with that stat, lowest first for DP cost, Redeploy and Attack interval.
By promotion
- Elite 0 Lv. 1HP: 824ATK: 377DEF: 136RES: 10Block: 0DP: 20Redeploy: 80Interval: 3.5
- Elite 0 Lv. 50HP: 1145ATK: 510DEF: 210RES: 10Block: 0DP: 20Redeploy: 80Interval: 3.5
- Elite 1 Lv. 70HP: 1469ATK: 655DEF: 274RES: 20Block: 0DP: 22Redeploy: 80Interval: 3.5
- Elite 2 Lv. 80HP: 1729ATK: 809DEF: 331RES: 30Block: 0DP: 22Redeploy: 80Interval: 3.5
Base values before trust, potentials and modules. Full trust adds HP +200, ATK +30, DEF +30.
Trait
- Deals Damage to all targets within range 50% chance to dodge Physical and Arts attacks and is less likely to be targeted by enemies
Skills
2
Shuddering Strings
Manual trigger · Offensive recovery · Unlocks at Elite 0LevelPerforms a 5-strike attack, each strike dealing 70% of ATK as Arts damage to ground enemies within Attack Range When other Ave Mujica members activate their skill, releases this skill one more time Can store 2 charges
- SP cost
- 4
- Initial SP
- 0
- Duration
- 2.1s
- Charges
- 2

Drifting Soul
Manual trigger · Auto recovery · Unlocks at Elite 1LevelInflicts Fear on enemies within Attack Range for 1.5s; deals 100% of ATK as Arts damage to enemies within Attack Range every second; Talent 1's chance to trigger Slow increases to 2.2x
- SP cost
- 40
- Initial SP
- 25
- Duration
- 15s
Talents
2Professional
- Elite 0
- Enemies damaged by Umiri Yahata have a 15% chance of being Slowed for 3s
- Elite 1
- Enemies damaged by Umiri Yahata have a 18% chance of being Slowed for 3s
- Elite 2
- Enemies damaged by Umiri Yahata have a 21% chance of being Slowed for 3s; when skill is active, Umiri Yahata's Attack Range expands
Do Not Fear Being Afraid
- Elite 0
- Fever +2 whenever inflicting Slow or Fear When deployed, Ave Mujica members deal 3% more damage to Slowed or Feared enemies
- Elite 0 · Potential 5
- Fever +2 whenever inflicting Slow or Fear When deployed, Ave Mujica members deal 8% (+5%) more damage to Slowed or Feared enemies
- Elite 2
- Fever +2 whenever inflicting Slow or Fear When deployed, Ave Mujica members deal 10% more damage to Slowed or Feared enemies
- Elite 2 · Potential 5
- Fever +2 whenever inflicting Slow or Fear When deployed, Ave Mujica members deal 15% (+5%) more damage to Slowed or Feared enemies
Potentials
- Potential 2
- DP Cost -1
- Potential 3
- Redeployment Time -10 sec
- Potential 4
- DP Cost -1
- Potential 5
- Improves Second Talent
- Potential 6
- DP Cost -1
Modules
1
Extra Training (AMB-Y)
Unlocks at Elite 2 Lv. 50StageStatsTraitTalent- Stage 1Stats: HP +105, ATK +35, ASPD +5Trait: Deals Damage to all targets within range 65% chance to dodge Physical and Arts attacks and is less likely to be targeted by enemies
- Stage 2Stats: HP +135, ATK +45, ASPD +6Trait: Deals Damage to all targets within range 65% chance to dodge Physical and Arts attacks and is less likely to be targeted by enemiesTalent: Enemies damaged by Umiri Yahata have a 25% chance of being Slowed for 3s; when skill is active, Umiri Yahata's Attack Range expands
- Stage 3Stats: HP +145, ATK +70, ASPD +7Trait: Deals Damage to all targets within range 65% chance to dodge Physical and Arts attacks and is less likely to be targeted by enemiesTalent: Enemies damaged by Umiri Yahata have a 30% chance of being Slowed for 3s; when skill is active, Umiri Yahata's Attack Range expands
To unlock
- Complete a total of 5 battles; You must deploy your own Umiri Yahata, and use Drifting Soul at least 1 time in each battle
- Clear Babel BB-7 with a 3-star rating; You must deploy your own Umiri Yahata and have her defeat at least 1 Rogue Mercenary 'Bass'
Module record
One day, Ave Mujica are practicing as usual.
But after running through one song, Sakiko pauses and asks, 'Yahata-san, you seem quite distracted. Is something the matter?'
Past Umiri has managed her schedule to a T, easily playing for multiple bands at once with room to spare. In recent days, however, she seems almost tired, which the entire band including Sakiko find more than peculiar. Is she still adjusting to working at Rhodes Island?
Umiri is silent for a spell, then gives her response while still chewing on it. '...I'll deal with it ASAP. I have no intention of causing trouble for any of you.'
'I see. Well then, let us continue practice.' Sakiko drops the issue, while the others trust that Umiri, being Umiri, can handle whatever the problem she is having is.
Practice ends, and away from prying eyes, Umiri swiftly makes for a gym. Not the typical training room used by other operators, but a set of older facilities further away from the dorms, and hardly patronized these days.
Alone in the gym, dinnertime notwithstanding, Umiri uncaps a bottle of protein shake. By all accounts, that is to be her dinner tonight.
Chugging the tasteless protein drink, Umiri casts an eye over her schedule. Three hours of training first, and then she is finally on break.
'...That was a slip-up. I'll need to put more effort into adjusting to life here.
'Kay and the Sankta operators keep inviting me to try out sweets, and it's not like I can refuse. Which means I'll have to double my normal training amount in order to work all the excess off.'
Letting out a deep sigh, Umiri sets about her final training session of the day.
The Sanktas of Rhodes Island have taken a great liking to Umiri. Why? Because she is one of the few people who would go out for dessert with them (Ceobe being one of the few others, of course). Most operators politely decline their invitations, but Umiri always accepts happily with genuine enthusiasm.
Truth is, she is merely being courteous too, and never takes more than a bite or two. Little does she know that those half-hearted nibbles are exactly what have been quietly fueling her rising popularity. Throwing herself into training as she works to maintain her physique, Umiri is none the wiser, her Sankta friends are carrying a Laterano's brand new Sugar Glazed Pudding Butter Croissant Tower (serves ten in Lateran units) and on the hunt for her right this moment.
Base skills
2
Reliable Companion
Control Center · Elite 0When this Operator is assigned to the Control Center, Passion +10; HR contacting speed +10% (Only the strongest effect of this type takes place)

Famiglia Approval
Control Center · Elite 2When this Operator is assigned to the Control Center, all Siracusa Operators assigned to Trading Posts gain order acquisition efficiency +5%
Outfits
3
Elite 1
Default Outfit
Art by Studio Montagne

Elite 2
Default Outfit
Art by Studio Montagne

Moonlight Executioner
Ave Mujica
Art by Studio Montagne
Store
Voice lines
38Show all 38 lines
- Appointed as Assistant
- You can leave that paperwork, I handled it already. Any issues, Doctor?
- Talk 1
- I've noticed Rhodes Island's ops don't tend to hold back on strength or personality. But nobody clashes with anyone. They're all able to treat each other with respect. I don't know what to make of it, honestly.
- Talk 2
- Vigna invited me to see her perform live. She's got impressive guitar skills. I'm really looking forward to it.
- Talk 3
- No need for concern. Practice time and rest time are both fully blocked out on my schedule, and I've given myself plenty of leeway in my work hours. I'm never going to collapse.
- Talk after Promotion 1
- As long as Rhodes Island is going to look after me, I owe it to your people to help you out.
- Talk after Promotion 2
- The relationship between you and Amiya-san is a good influence on everyone else. Just one of those Rhodes things. The people here all think of each other as family. I'm just as honored to be able to contribute.
- Talk after Trust Increase 1
- These honey biscuits Ceobe-san likes are good. It's hard to stop eating them.
- Talk after Trust Increase 2
- I know everyone at Rhodes Island has their own troubles, but they all prop each other up through whatever they're going through. I really owe a lot to them, especially you, Doctor. I'm very thankful.
- Talk after Trust Increase 3
- A boatloads of squads requested for me to help them out with things again. I'll work through each task one by one for everyone at Rhodes Island.
- Idle
- Hmm... Doctor, I see you're still working at it. Here, a chocolate panna cotta to keep you going.
- Onboard
- Umiri Yahata. If you need anything, just ask.
- Watching Battle Record
- I like the efficiency. I'm taking notes.
- Promotion 1
- I'm just doing what I'm supposed to.
- Promotion 2
- I'm happy that everyone at Rhodes Island has accepted me. Perhaps they might even be able to fulfill my wishes too, don't you think?
- Added to Squad
- Got it.
- Appointed as Squad Leader
- You want me to lead? Understood.
- Depart
- Let's get going.
- Begin Operation
- I expected this. Let's go.
- Selecting Operator 1
- Here.
- Selecting Operator 2
- Hmm? Need me?
- Deployment 1
- In position.
- Deployment 2
- Right on target.
- In Battle 1
- Leave it to me.
- In Battle 2
- This is easy.
- In Battle 3
- Hrnph!
- In Battle 4
- Excuse me.
- 4-star Result
- Mission complete. Couldn't have done it without you all.
- 3-star Result
- That was some nice leadership, Doctor.
- Sub 3-star Result
- That was a close call. We need more practice under our belt.
- Operation Failure
- Let's hustle. We're not going to leave anyone behind.
- Assigned to Facility
- So this is the area I can freely utilize? Where's the training room then?
- Tap
- Eh?
- Trust Tap
- Yes. I'm here.
- Title
- Arknights.
- New Year's blessing
- Doctor. Happy New Year. I'm looking forward to our new journey ahead.
- Greeting
- Hello, Doctor. Want to head to training?
- Birthday
- There you are. Doctor, happy birthday. Here's your cake and your present. I guarantee it'll be good. I've had that store's cake before.
- Anniversary Celebration
- You know. Little by little I've opened up, here at Rhodes Island. Now I can put my own thoughts out there without worrying what others think of me. I have the people of Rhodes Island to thank for that, as well as you. So thank you, Doctor.
Upgrade costs
Open in the plannerPromotion
- Elite 1
Specialist Chip ×4
Sugar ×4
Oriron ×3
LMD ×20,000 - Elite 2
Specialist Dualchip ×3
Cutting Fluid Solution ×8
Semi-Synthetic Solvent ×12
LMD ×120,000
Skill levels
- Lv. 2
Skill Summary - 1 ×4 - Lv. 3
Skill Summary - 1 ×4
Oriron Shard ×5 - Lv. 4
Skill Summary - 2 ×6
Polyketon ×3 - Lv. 5
Skill Summary - 2 ×6
Device ×3 - Lv. 6
Skill Summary - 2 ×6
Grindstone ×3 - Lv. 7
Skill Summary - 3 ×6
Loxic Kohl ×3
Coagulating Gel ×3
Mastery: Shuddering Strings
- M1
Skill Summary - 3 ×5
Orirock Concentration ×3
Orirock Cluster ×7 - M2
Skill Summary - 3 ×6
Solidified Fiber Board ×3
RMA70-24 ×5 - M3
Skill Summary - 3 ×10
Crystalline Electronic Unit ×4
Crystalline Circuit ×1
Mastery: Drifting Soul
- M1
Skill Summary - 3 ×5
Incandescent Alloy Block ×3
Grindstone ×3 - M2
Skill Summary - 3 ×6
Chiral Refractor ×3
Crystalline Circuit ×5 - M3
Skill Summary - 3 ×10
Rephasic Enantiomer ×4
Transmuted Salt Agglomerate ×1
Module: Extra Training (AMB-Y)
- Stage 1
Module Data Block ×2
RMA70-24 ×3
LMD ×40,000 - Stage 2
Module Data Block ×2
Data Supplement Stick ×20
Incandescent Alloy Block ×4
LMD ×50,000 - Stage 3
Module Data Block ×2
Data Supplement Instrument ×8
Crystalline Circuit ×5
LMD ×60,000
How to get Umiri Yahata
Event Reward
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