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Seia (Swimsuit)

Trinity General School

Seia (Swimsuit)

★★★

/Piercing/Support

Atier

Introduction

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

On the Blue Archive tier list Seia (Swimsuit) is A tier, 31st 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 (Swimsuit) does

Raises one ally's EX damage by up to 74.1% for 25 seconds, so she pairs with whoever carries your damage. Her normal attacks build toward a small heal on herself and the lowest-HP ally.

Seia (Swimsuit) in raids

On the raids usage list Seia (Swimsuit) is A tier, 15th of 264: brought by 29% of ranked Global players to the last 8 raids, on average.

  • Raid usage29.39%

By raid, newest first

  • Hod (Indoor)19.1%
  • Gregorius (Indoor)0.2%
  • Hovercraft (Outdoor)57.9%
  • Drumbarka (Street)20.9%
  • Myouki Kurokage (Street)56.8%
  • KAITEN FX Mk.0 (Street)37.1%
  • Perorodzilla (Outdoor)33.3%
  • Goz (Outdoor)9.9%

Seia (Swimsuit)'s banners

All banners
  • 16 December 2025 to 23 December 2025Unique Recruitment

Profile

A member of the Tea Party and the leader of Sanctus, now on a leisurely summer vacation.

With her capricious and impulsive nature, she's had no problem detaching herself from her Tea Party responsibilities and entering full vacation mode. While she's always been a little unpredictable, she's no longer restraining herself and is eager to let loose.

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

Stats

  • Max HP113th26,984
  • ATK169th3,017
  • DEF260th91
  • Healing259th4,751
  • Accuracy221st104
  • Evasion48th1,045
  • Crit149th209
  • Crit DMG200%
  • Stability246th948
  • 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: 2,130Level 90, 3 stars: 22,387Level 90, 5 stars: 26,984
  • ATKLevel 1, 3 stars: 264Level 90, 3 stars: 2,406Level 90, 5 stars: 3,017
  • DEFLevel 1, 3 stars: 16Level 90, 3 stars: 91Level 90, 5 stars: 91
  • HealingLevel 1, 3 stars: 1,381Level 90, 3 stars: 3,863Level 90, 5 stars: 4,751
  • AccuracyLevel 1, 3 stars: 104Level 90, 3 stars: 104Level 90, 5 stars: 104
  • EvasionLevel 1, 3 stars: 1,045Level 90, 3 stars: 1,045Level 90, 5 stars: 1,045
  • 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: 948Level 90, 3 stars: 948Level 90, 5 stars: 948
  • 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
Special
Weapon
Handgun
School
Trinity General School
Club
Tea Party
Year and age
3rd Year, 17 years old
Equipment slots
Gloves, Hairpin, 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

  • Romantic Beach

    EX Skill · Cost 3
    Level

    Increases an ally's EX Skill damage by 74.1% (for 25 sec).

  • Decisive Moment

    Basic Skill
    Level

    For every 12 Normal Attacks, recovers 103% of Healing as HP for the 1 ally with the lowest HP other than the user. Recovers 103% of Healing as HP for the user.

  • Resort Atmosphere

    Enhanced Skill
    Level

    Increases Healing by 26.6%.

  • Resort Atmosphere+

    Enhanced Skill +
    Level

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

    Replaces Resort Atmosphere once Seia (Swimsuit)'s Exclusive Weapon reaches 2 stars.

  • City Pop Star

    Sub Skill
    Level

    Increases ATK SPD by 31% when using EX skills (for 26 sec).

Exclusive Weapon

Upgrade planner

Keen Illumination

Handgun

Seia's favorite pistol. While her outfit may be lighter, her words and bullets are as harsh as ever. Her fighting technique is as bold as her swimwear.

  • 1 starLv. 30: ATK +346, Max HP +2,291, Healing +502
  • 2 starsLv. 40: ATK +433, Max HP +2,864, Healing +628Enhanced Skill becomes Resort Atmosphere+
  • 3 starsLv. 50: ATK +520, Max HP +3,437, Healing +753Urban affinity S to SS
  • 4 starsLv. 60: ATK +606, Max HP +4,010, Healing +879Piercing 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 (Swimsuit) starts at 3 stars. Each star also lifts the Relationship Rank cap.

Relationship Rank bonus

  • 5Total bonus: Healing +16
  • 10Total bonus: Healing +41
  • 15Total bonus: Healing +76, Max HP +275
  • 20Total bonus: Healing +121, Max HP +605
  • 25Total bonus: Healing +131, Max HP +660
  • 30Total bonus: Healing +141, Max HP +715
  • 35Total bonus: Healing +161, Max HP +800
  • 40Total bonus: Healing +181, Max HP +885
  • 45Total bonus: Healing +206, Max HP +1,025
  • 50Total bonus: Healing +231, Max HP +1,165

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 (Swimsuit) likes

11

Favourites

  • Summer Floaty

Also liked

  • Streets of Thugs Vol. 1
  • Classical Poetry Anthology
  • 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 (Swimsuit)'s favourite-item tags it carries. Gifts not listed still give the base amount.

Lines and Memorial Lobby

When recruited: Heehee. My appearance isn't the only thing that has changed.

MomoTalk status: Waking up to a fairy tale...

Seia (Swimsuit)'s Recollection Lobby
Seia (Swimsuit)'s Recollection Lobby

Upgrade costs

Open in the planner

EX Skill

  • Lv. 2Credit Points ×80,000Beginner Tactical Training Blu-ray (Trinity) ×12Nebra Sky Disk Piece ×17
  • Lv. 3Credit Points ×500,000Normal Tactical Training Blu-ray (Trinity) ×12Beginner Tactical Training Blu-ray (Trinity) ×18Broken Nebra Sky Disk ×14Disco Colgante Piece ×29
  • Lv. 4Credit Points ×3,000,000Advanced Tactical Training Blu-ray (Trinity) ×12Normal Tactical Training Blu-ray (Trinity) ×18Damaged Nebra Sky Disk ×8Broken Disco Colgante ×20
  • Lv. 5Credit Points ×10,000,000Superior Tactical Training Blu-ray (Trinity) ×8Advanced Tactical Training Blu-ray (Trinity) ×18Intact Nebra Sky Disk ×8Repaired Disco Colgante ×21

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) ×12Nebra Sky Disk Piece ×5
  • Lv. 5Credit Points ×90,000Normal Tech Notes (Trinity) ×8Broken Nebra Sky Disk ×5Disco Colgante Piece ×15
  • Lv. 6Credit Points ×300,000Advanced Tech Notes (Trinity) ×5Normal Tech Notes (Trinity) ×12Broken Nebra Sky Disk ×9Disco Colgante Piece ×18
  • Lv. 7Credit Points ×450,000Advanced Tech Notes (Trinity) ×8Damaged Nebra Sky Disk ×4Broken Disco Colgante ×18
  • Lv. 8Credit Points ×1,500,000Superior Tech Notes (Trinity) ×8Advanced Tech Notes (Trinity) ×12Intact Nebra Sky Disk ×5Repaired Disco Colgante ×9
  • Lv. 9Credit Points ×2,400,000Superior Tech Notes (Trinity) ×12Intact Nebra Sky Disk ×8Repaired Disco Colgante ×12
  • Lv. 10Credit Points ×4,000,000Secret Tech Notes ×1

Star promotion

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

Exclusive Weapon

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

Talent: Max HP

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

Talent: ATK

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

Talent: Healing

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

Art

Seia (Swimsuit) key art

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