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Yakumo

Red Winter Federal Academy

Yakumo

★★★

/Explosive/Support

Atier

Introduction

Yakumo is a 3-star Explosive student in Blue Archive. Yakumo's role is Support. School: Red Winter Federal Academy.

On the Blue Archive tier list Yakumo is A tier, 51st of the 242 students ranked.

Other Explosive students in Blue Archive: Airi, Airi (Band), Akane (School), Akari, Ako (Dress), Aru and 85 more.

What Yakumo does

Her EX drags up to five enemies to one spot and slows them, with a chance to stun for up to 6.1 seconds. Each enemy caught gives her a Sale, and four Sales become a Critical Damage buff for your top crit ally.

Yakumo in raids

On the raids usage list Yakumo is D tier, 93rd of 264: brought by 1.4% of ranked Global players to the last 8 raids, on average.

  • Raid usage1.37%

By raid, newest first

  • Hod (Indoor)0.2%
  • Gregorius (Indoor)0%
  • Hovercraft (Outdoor)1.2%
  • Drumbarka (Street)0%
  • Myouki Kurokage (Street)0%
  • KAITEN FX Mk.0 (Street)9.5%
  • Perorodzilla (Outdoor)0.1%
  • Goz (Outdoor)0%

Yakumo's banners

All banners
  • 7 April 2026 to 21 April 2026Pick-Up Recruitment

Profile

The president of the Publishing Department, the Red Winter Academy's publishing club.

She also serves as Chief Editor for the "Red Bear" magazine. She's unstoppable once she sets her mind on something, and this invincible president will do anything for the Publishing Department's profit. But she also seems to be hiding a pure heart lying beneath her cunning exterior...

Yakumo's full name is Aramaki Yakumo. Yakumo's birthday is May 18th, and Yakumo stands 4'9" tall. Yakumo is voiced by 碧乃梨心 in Japanese and Seo Dahye in Korean. Yakumo's hobby is writing business proposals and analyzing railroad lines. kokosando drew Yakumo.

Stats

  • Max HP118th26,791
  • ATK131st3,426
  • DEF40th534
  • Healing41st6,956
  • Accuracy51st801
  • Evasion59th1,024
  • Crit19th267
  • Crit DMG200%
  • Stability222nd1,067
  • Normal Attack Range1,000
  • Cost Recovery700

At level 90 and 5 stars, before the Exclusive Weapon, equipment, Talents and Relationship Rank. Each bar is measured against the highest value in the Blue Archive roster, and the place is out of every student with that stat.

At level 1 and 90

  • Max HPLevel 1, 3 stars: 3,260Level 90, 3 stars: 22,226Level 90, 5 stars: 26,791
  • ATKLevel 1, 3 stars: 301Level 90, 3 stars: 2,732Level 90, 5 stars: 3,426
  • DEFLevel 1, 3 stars: 97Level 90, 3 stars: 534Level 90, 5 stars: 534
  • HealingLevel 1, 3 stars: 2,021Level 90, 3 stars: 5,656Level 90, 5 stars: 6,956
  • AccuracyLevel 1, 3 stars: 801Level 90, 3 stars: 801Level 90, 5 stars: 801
  • EvasionLevel 1, 3 stars: 1,024Level 90, 3 stars: 1,024Level 90, 5 stars: 1,024
  • CritLevel 1, 3 stars: 267Level 90, 3 stars: 267Level 90, 5 stars: 267
  • Crit ResLevel 1, 3 stars: 100Level 90, 3 stars: 100Level 90, 5 stars: 100
  • Crit DMGLevel 1, 3 stars: 200%Level 90, 3 stars: 200%Level 90, 5 stars: 200%
  • Crit DMG ResLevel 1, 3 stars: 50%Level 90, 3 stars: 50%Level 90, 5 stars: 50%
  • StabilityLevel 1, 3 stars: 1,067Level 90, 3 stars: 1,067Level 90, 5 stars: 1,067
  • Normal Attack RangeLevel 1, 3 stars: 1,000Level 90, 3 stars: 1,000Level 90, 5 stars: 1,000
  • CC PowerLevel 1, 3 stars: 100Level 90, 3 stars: 100Level 90, 5 stars: 100
  • CC ResLevel 1, 3 stars: 100Level 90, 3 stars: 100Level 90, 5 stars: 100
  • Recovery BoostLevel 1, 3 stars: 100%Level 90, 3 stars: 100%Level 90, 5 stars: 100%
  • Cost RecoveryLevel 1, 3 stars: 700Level 90, 3 stars: 700Level 90, 5 stars: 700
  • Mag CountLevel 1, 3 stars: 1Level 90, 3 stars: 1Level 90, 5 stars: 1
  • DEF PenetrationLevel 1, 3 stars: 0Level 90, 3 stars: 0Level 90, 5 stars: 0
  • MobilityLevel 1, 3 stars: 200Level 90, 3 stars: 200Level 90, 5 stars: 200

Before the Exclusive Weapon, equipment, Talents and Relationship Rank. Stars raise ATK, Max HP and Healing only.

Combat profile

Squad
Special (supports from the back line)
Position
Back
Attack type
Explosive
Armor type
Light
Weapon
Handgun
School
Red Winter Federal Academy
Club
Publishing Department
Year and age
3rd Year, 17 years old
Equipment slots
Shoes, Badge, Necklace

Terrain affinity

  • UrbanS (SS with the weapon at 3 stars)
  • OutdoorB
  • IndoorD

Affinity sets how well a student fights on each stage type, from D up to SS.

Skills

5

  • Publish, Print, Distribute

    EX Skill · Cost 4
    Level

    Moves 5 enemies in a circular area to a designated location, then decreases MOV SPD by 32.2% (for 13 sec) and accumulates 1 Sale for each enemy affected (max stacks: 4). Also has a 61% chance to inflict Stun (for 6.1 sec).

  • Sales Surge

    Basic Skill
    Level

    Once 4 Sales stacks have accumulated, consumes all Sales stacks and increases Crit DMG for 1 ally with the highest Crit DMG by 37.9% (for 20 sec).

  • Management Philosophy

    Enhanced Skill
    Level

    Increases Crowd Control Power by 26.6%.

  • Management Philosophy+

    Enhanced Skill +
    Level

    Increases Buff Retention by 1900. Also increases Crowd Control Power by 26.6%.

    Replaces Management Philosophy once Yakumo's Exclusive Weapon reaches 2 stars.

  • Contract Renewal

    Sub Skill
    Level

    Increases ally ATK by 17.3%.

Exclusive Weapon

Upgrade planner

Pravda

Handgun

A pistol that Yakumo keeps on hand She often says that there are many uses for a gun. One of them is encouraging "diligence" in writers who are at risk of missing their deadlines.

  • 1 starLv. 30: ATK +393, Max HP +2,302, Healing +735
  • 2 starsLv. 40: ATK +492, Max HP +2,877, Healing +919Enhanced Skill becomes Management Philosophy+
  • 3 starsLv. 50: ATK +590, Max HP +3,452, Healing +1,103Urban affinity S to SS
  • 4 starsLv. 60: ATK +689, Max HP +4,028, Healing +1,287MaxCostIncrease +5,000

Stars and Relationship Rank

Star bonuses

  • 4 starsBonus over 1 star: ATK +14%, Max HP +9%, Healing +12%Rank cap: 30
  • 5 starsBonus over 1 star: ATK +31%, Max HP +23%, Healing +27%Rank cap: 100

Yakumo starts at 3 stars. Each star also lifts the Relationship Rank cap.

Relationship Rank bonus

  • 5Total bonus: ATK +12
  • 10Total bonus: ATK +32
  • 15Total bonus: ATK +57, Max HP +270
  • 20Total bonus: ATK +92, Max HP +595
  • 25Total bonus: ATK +102, Max HP +630
  • 30Total bonus: ATK +112, Max HP +665
  • 35Total bonus: ATK +122, Max HP +720
  • 40Total bonus: ATK +132, Max HP +775
  • 45Total bonus: ATK +152, Max HP +865
  • 50Total bonus: ATK +172, Max HP +955

Stats stop growing at rank 50.

Talents

  • Max HP25 levels, up to +5%
  • ATK25 levels, up to +5%
  • Healing25 levels, up to +5%

Gifts Yakumo likes

12

Favourites

  • Antique Egg Handicraft
  • Streets of Thugs Vol. 1
  • Buried Treasure Map
  • Classical Poetry Anthology
  • Encyclopedia
  • Extraordinary Cottontail Detective: Case of the Misty Hot Spring Slide
  • Extravagant Gilded Jar of Greed
  • Forbidden Love: Its Beauty Lies in Its Illicitness
  • Guns, Charm, and Zeal
  • Hitgirls Gaming Magazine
  • Wind-Up Music Box
  • World's Most Useless Gadget

A gift gives more Relationship Rank EXP the more of Yakumo's favourite-item tags it carries. Gifts not listed still give the base amount.

Lines and Memorial Lobby

When recruited: By any chance, are you interested in books? Eh, let's just have a talk.

MomoTalk status: Publish, Print, Distribute.

Yakumo's Recollection Lobby
Yakumo's Recollection Lobby

Upgrade costs

Open in the planner

EX Skill

  • Lv. 2Credit Points ×80,000Beginner Tactical Training Blu-ray (Red Winter) ×12Mandrake Seed ×18
  • Lv. 3Credit Points ×500,000Normal Tactical Training Blu-ray (Red Winter) ×12Beginner Tactical Training Blu-ray (Red Winter) ×18Mandrake Sprout ×15Totem Pole Piece ×27
  • Lv. 4Credit Points ×3,000,000Advanced Tactical Training Blu-ray (Red Winter) ×12Normal Tactical Training Blu-ray (Red Winter) ×18Mandrake Juice ×10Broken Totem Pole ×25
  • Lv. 5Credit Points ×10,000,000Superior Tactical Training Blu-ray (Red Winter) ×8Advanced Tactical Training Blu-ray (Red Winter) ×18Mandrake Extract ×8Repaired Totem Pole ×22

Basic, Enhanced and Sub Skills

  • Lv. 2Credit Points ×5,000Beginner Tech Notes (Red Winter) ×5
  • Lv. 3Credit Points ×7,500Beginner Tech Notes (Red Winter) ×8
  • Lv. 4Credit Points ×60,000Normal Tech Notes (Red Winter) ×5Beginner Tech Notes (Red Winter) ×12Mandrake Seed ×4
  • Lv. 5Credit Points ×90,000Normal Tech Notes (Red Winter) ×8Mandrake Sprout ×4Totem Pole Piece ×13
  • Lv. 6Credit Points ×300,000Advanced Tech Notes (Red Winter) ×5Normal Tech Notes (Red Winter) ×12Mandrake Sprout ×10Totem Pole Piece ×18
  • Lv. 7Credit Points ×450,000Advanced Tech Notes (Red Winter) ×8Mandrake Juice ×3Broken Totem Pole ×16
  • Lv. 8Credit Points ×1,500,000Superior Tech Notes (Red Winter) ×8Advanced Tech Notes (Red Winter) ×12Mandrake Extract ×5Repaired Totem Pole ×9
  • Lv. 9Credit Points ×2,400,000Superior Tech Notes (Red Winter) ×12Mandrake Extract ×8Repaired Totem Pole ×13
  • Lv. 10Credit Points ×4,000,000Secret Tech Notes ×1

Star promotion

  • 4 starsCredit Points ×200,000Yakumo's Eleph ×100
  • 5 starsCredit Points ×1,000,000Yakumo's Eleph ×120

Exclusive Weapon

  • 2 starsCredit Points ×1,000,000Yakumo's Eleph ×120
  • 3 starsCredit Points ×1,500,000Yakumo's Eleph ×180
  • 4 starsCredit Points ×2,000,000Yakumo's Eleph ×200

Talent: Max HP

  • Lv. 1-5Credit Points ×500,000Mandrake Seed ×50Physical Education Workbook ×10
  • Lv. 6-10Credit Points ×500,000Mandrake Seed ×75Physical Education Workbook ×10
  • Lv. 11-15Credit Points ×500,000Mandrake Seed ×100Physical Education Workbook ×10
  • Lv. 16-20Credit Points ×1,000,000Mandrake Sprout ×30Physical Education Workbook ×20
  • Lv. 21-25Credit Points ×1,000,000Mandrake Sprout ×40Physical Education Workbook ×20

Talent: ATK

  • Lv. 1-5Credit Points ×500,000Mandrake Seed ×50Shooting Workbook ×10
  • Lv. 6-10Credit Points ×500,000Mandrake Seed ×75Shooting Workbook ×10
  • Lv. 11-15Credit Points ×500,000Mandrake Seed ×100Shooting Workbook ×10
  • Lv. 16-20Credit Points ×1,000,000Mandrake Sprout ×30Shooting Workbook ×20
  • Lv. 21-25Credit Points ×1,000,000Mandrake Sprout ×40Shooting Workbook ×20

Talent: Healing

  • Lv. 1-5Credit Points ×500,000Mandrake Seed ×50Hygiene Workbook ×10
  • Lv. 6-10Credit Points ×500,000Mandrake Seed ×75Hygiene Workbook ×10
  • Lv. 11-15Credit Points ×500,000Mandrake Seed ×100Hygiene Workbook ×10
  • Lv. 16-20Credit Points ×1,000,000Mandrake Sprout ×30Hygiene Workbook ×20
  • Lv. 21-25Credit Points ×1,000,000Mandrake Sprout ×40Hygiene Workbook ×20

Art

Yakumo key art

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