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Seia

Trinity General School

Seia

★★★

/Piercing/Support

Atier

Introduction

Seia is a 3-star Piercing student in Blue Archive. Seia's role is Support. School: Trinity General School.

On the Blue Archive tier list Seia is A tier, 13th of the 242 students ranked.

Other Piercing students in Blue Archive: Akane, Aru (Dress), Aru (New Year), Ayane, Ayane (Swimsuit), Cherino and 62 more.

What Seia does

Cuts one ally's EX cost by up to half, for one or two casts depending on level, and speeds up Cost recovery for 15 seconds. Every 35 seconds she adds Piercing Efficiency to herself and another ally, and her third EX also shields her and its target.

Seia in raids

On the raids usage list Seia is A tier, 12th of 264: brought by 34% of ranked Global players to the last 8 raids, on average.

  • Raid usage34.23%

By raid, newest first

  • Hod (Indoor)87.4%
  • Gregorius (Indoor)0.5%
  • Hovercraft (Outdoor)12.7%
  • Drumbarka (Street)1%
  • Myouki Kurokage (Street)79.3%
  • KAITEN FX Mk.0 (Street)4.9%
  • Perorodzilla (Outdoor)83.6%
  • Goz (Outdoor)4.6%

Seia's banners

All banners
  • 4 August 2026 to 18 August 2026Unique Recruitment
  • 8 July 2025 to 15 July 2025Unique Recruitment

Profile

A member of the Tea Party, from Trinity General School, and leader of Sanctus.

Others find her pedantic and unpredictable. A bit capricious and impulsive, rather like a noble. Following her recovery from an assassination attempt, she's shown more of her stubborn and childish side.

Seia's full name is Yurizono Seia. Seia's birthday is September 29th, and Seia stands 4'11" tall. Seia is voiced by 種﨑敦美 in Japanese and Lee Iro in Korean. Seia's hobby is solving puzzles and reading. kokosando drew Seia.

Stats

  • Max HP112th27,021
  • ATK213th2,518
  • DEF260th91
  • Healing145th5,930
  • Accuracy221st104
  • Evasion47th1,047
  • Crit149th209
  • Crit DMG200%
  • Stability243rd952
  • Normal Attack Range194th550
  • 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: 2,133Level 90, 3 stars: 22,418Level 90, 5 stars: 27,021
  • ATKLevel 1, 3 stars: 221Level 90, 3 stars: 2,008Level 90, 5 stars: 2,518
  • DEFLevel 1, 3 stars: 16Level 90, 3 stars: 91Level 90, 5 stars: 91
  • HealingLevel 1, 3 stars: 1,723Level 90, 3 stars: 4,822Level 90, 5 stars: 5,930
  • AccuracyLevel 1, 3 stars: 104Level 90, 3 stars: 104Level 90, 5 stars: 104
  • EvasionLevel 1, 3 stars: 1,047Level 90, 3 stars: 1,047Level 90, 5 stars: 1,047
  • CritLevel 1, 3 stars: 209Level 90, 3 stars: 209Level 90, 5 stars: 209
  • 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: 952Level 90, 3 stars: 952Level 90, 5 stars: 952
  • Normal Attack RangeLevel 1, 3 stars: 550Level 90, 3 stars: 550Level 90, 5 stars: 550
  • 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: 8Level 90, 3 stars: 8Level 90, 5 stars: 8
  • 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
Striker (fights on the field)
Position
Middle
Attack type
Piercing
Armor type
Elastic
Weapon
Handgun
School
Trinity General School
Club
Tea Party
Year and age
3rd Year, 17 years old
Equipment slots
Shoes, Hairpin, Necklace

Terrain affinity

  • UrbanB
  • OutdoorD
  • IndoorS (SS with the weapon at 3 stars)

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

Skills

5

  • The Garden's Embrace

    EX Skill · Cost 3
    Level

    Decreases another ally's EX Skill Cost by a maximum of 50% (max 2 EX Skill uses, rounding down). Also increases the user's Cost Recovery by 718 (for 15 sec).

  • Sharp Advice

    Basic Skill
    Level

    Increases Piercing Effectiveness of 1 ally, and the user, by 49.8% (for 25 sec) every 35 sec.

  • Calm Mind

    Enhanced Skill
    Level

    Increases Healing by 26.6%.

  • Calm Mind+

    Enhanced Skill +
    Level

    Increases Buff Retention by 1900. Also increases Healing by 26.6%.

    Replaces Calm Mind once Seia's Exclusive Weapon reaches 2 stars.

  • Enveloping Intuition

    Sub Skill
    Level

    For every 3 uses of the EX Skill, grants 195% of Healing as a Barrier to the user and 3rd EX Skill target (for 25 sec).

Exclusive Weapon

Upgrade planner

Keen Illumination

Handgun

Seia's favorite pistol. It has an elegant and stable design, as expected of a Tea Party member. It's always loaded, just like Seia, who's not hesitant to spit harsh words when the situation calls for it.

  • 1 starLv. 30: ATK +289, Max HP +2,294, Healing +627
  • 2 starsLv. 40: ATK +362, Max HP +2,868, Healing +783Enhanced Skill becomes Calm Mind+
  • 3 starsLv. 50: ATK +434, Max HP +3,441, Healing +940Indoor affinity S to SS
  • 4 starsLv. 60: ATK +506, Max HP +4,015, Healing +1,097Piercing damage +10%

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

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

Relationship Rank bonus

  • 5Total bonus: Healing +16
  • 10Total bonus: Healing +51
  • 15Total bonus: Healing +96, Max HP +275
  • 20Total bonus: Healing +151, Max HP +605
  • 25Total bonus: Healing +166, Max HP +660
  • 30Total bonus: Healing +181, Max HP +715
  • 35Total bonus: Healing +201, Max HP +795
  • 40Total bonus: Healing +221, Max HP +875
  • 45Total bonus: Healing +256, Max HP +1,010
  • 50Total bonus: Healing +291, Max HP +1,145

Stats stop growing at rank 50.

Talents

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

Gifts Seia likes

10

Favourites

  • Classical Poetry Anthology

Also liked

  • Streets of Thugs Vol. 1
  • Cosplayer Coke-Bottle Glasses
  • 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
  • Potted Bug-Eating Plant

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

Lines and Memorial Lobby

When recruited: Like this, all roads connect to one.

MomoTalk status: Say what you wanted to say to each other.

Seia's Recollection Lobby
Seia's Recollection Lobby

Upgrade costs

Open in the planner

EX Skill

  • Lv. 2Credit Points ×80,000Beginner Tactical Training Blu-ray (Trinity) ×12Roman Dodecahedron Piece ×13
  • Lv. 3Credit Points ×500,000Normal Tactical Training Blu-ray (Trinity) ×12Beginner Tactical Training Blu-ray (Trinity) ×18Broken Roman Dodecahedron ×11Nebra Sky Disk Piece ×31
  • Lv. 4Credit Points ×3,000,000Advanced Tactical Training Blu-ray (Trinity) ×12Normal Tactical Training Blu-ray (Trinity) ×18Repaired Roman Dodecahedron ×10Broken Nebra Sky Disk ×32
  • Lv. 5Credit Points ×10,000,000Superior Tactical Training Blu-ray (Trinity) ×8Advanced Tactical Training Blu-ray (Trinity) ×18Intact Roman Dodecahedron ×12Damaged Nebra Sky Disk ×15

Basic, Enhanced and Sub Skills

  • Lv. 2Credit Points ×5,000Beginner Tech Notes (Trinity) ×5
  • Lv. 3Credit Points ×7,500Beginner Tech Notes (Trinity) ×8
  • Lv. 4Credit Points ×60,000Normal Tech Notes (Trinity) ×5Beginner Tech Notes (Trinity) ×12Roman Dodecahedron Piece ×5
  • Lv. 5Credit Points ×90,000Normal Tech Notes (Trinity) ×8Broken Roman Dodecahedron ×7Nebra Sky Disk Piece ×15
  • Lv. 6Credit Points ×300,000Advanced Tech Notes (Trinity) ×5Normal Tech Notes (Trinity) ×12Broken Roman Dodecahedron ×8Nebra Sky Disk Piece ×16
  • Lv. 7Credit Points ×450,000Advanced Tech Notes (Trinity) ×8Repaired Roman Dodecahedron ×5Broken Nebra Sky Disk ×16
  • Lv. 8Credit Points ×1,500,000Superior Tech Notes (Trinity) ×8Advanced Tech Notes (Trinity) ×12Intact Roman Dodecahedron ×5Damaged Nebra Sky Disk ×11
  • Lv. 9Credit Points ×2,400,000Superior Tech Notes (Trinity) ×12Intact Roman Dodecahedron ×6Damaged Nebra Sky Disk ×12
  • Lv. 10Credit Points ×4,000,000Secret Tech Notes ×1

Star promotion

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

Exclusive Weapon

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

Talent: Max HP

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

Talent: ATK

  • Lv. 1-5Credit Points ×500,000Roman Dodecahedron Piece ×50Shooting Workbook ×10
  • Lv. 6-10Credit Points ×500,000Roman Dodecahedron Piece ×75Shooting Workbook ×10
  • Lv. 11-15Credit Points ×500,000Roman Dodecahedron Piece ×100Shooting Workbook ×10
  • Lv. 16-20Credit Points ×1,000,000Broken Roman Dodecahedron ×30Shooting Workbook ×20
  • Lv. 21-25Credit Points ×1,000,000Broken Roman Dodecahedron ×40Shooting Workbook ×20

Talent: Healing

  • Lv. 1-5Credit Points ×500,000Roman Dodecahedron Piece ×50Hygiene Workbook ×10
  • Lv. 6-10Credit Points ×500,000Roman Dodecahedron Piece ×75Hygiene Workbook ×10
  • Lv. 11-15Credit Points ×500,000Roman Dodecahedron Piece ×100Hygiene Workbook ×10
  • Lv. 16-20Credit Points ×1,000,000Broken Roman Dodecahedron ×30Hygiene Workbook ×20
  • Lv. 21-25Credit Points ×1,000,000Broken Roman Dodecahedron ×40Hygiene Workbook ×20

Art

Seia key art

More Piercing students

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