Blue Archive · student

Seia (Swimsuit)

Seia (Swimsuit)セイア（水着）세이아(수영복)

★★★◈Pierce Special ✦Supporter Striker Trinity Middle HG Limited

Unchanged since July 18, 2026

LV.90

Combat

UrbanSOutdoorBIndoorD

Stats · Lv.90 Stats at any level →

HP22,386

ATK2,406

DEF91

Heal3,863

Crit209

Crit DMG200%

Crit RES100

Stability948

Accuracy104

Evasion1,045

Range550

DEF Pen0

CC Power100

CC RES100

Ammo8

Ammo cost2

Move Speed200

Heal Effectiveness10,000

Skills

Romantic BeachEX Skill · Cost 3 · Lv.5

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

Drag to see per-level scaling

Decisive MomentBasic Skill · Lv.10

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.

Drag to see per-level scaling

Resort Atmosphere+Enhanced Skill · Lv.10

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

Drag to see per-level scaling

City Pop StarSub Skill · Lv.10

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

Drag to see per-level scaling

Loved gifts · raise this student's affinity the most

Board Game "The Life"SSRGamegirl Color ReplicaSR

Liked gifts · genre favorites — extra affinity

Summer FloatySR · matches 2 tagsStreets of Thugs Vol. 1SSRClassical Poetry AnthologySRCosplayer Coke-Bottle GlassesSREncyclopediaSRExtraordinary Cottontail Detective: Case of the Misty Hot Spring SlideSRExtravagant Gilded Jar of GreedSRForbidden Love: Its Beauty Lies in Its IllicitnessSRGuns, Charm, and ZealSRHitgirls Gaming MagazineSRPotted Bug-Eating PlantSR

Star levels · credits and Eleph per star

2★

10,000 Credit Points + 30x Seia (Swimsuit)'s Eleph

3★

40,000 Credit Points + 80x Seia (Swimsuit)'s Eleph

4★

200,000 Credit Points + 100x Seia (Swimsuit)'s Eleph

5★

1,000,000 Credit Points + 120x Seia (Swimsuit)'s Eleph

Skill levels · per skill slot, per level

EX skill Lv.1 → 2

80,000 Credit Points + 12x Beginner Tactical Training Blu-ray (Trinity) + 17x Nebra Sky Disk Piece

Basic / Enhanced / Sub skill Lv.1 → 2

5,000 Credit Points + 5x Beginner Tech Notes (Trinity)

EX skill Lv.2 → 3

500,000 Credit Points + 12x Normal Tactical Training Blu-ray (Trinity) + 18x Beginner Tactical Training Blu-ray (Trinity) + 14x Broken Nebra Sky Disk + 29x Disco Colgante Piece

Basic / Enhanced / Sub skill Lv.2 → 3

7,500 Credit Points + 8x Beginner Tech Notes (Trinity)

EX skill Lv.3 → 4

3,000,000 Credit Points + 12x Advanced Tactical Training Blu-ray (Trinity) + 18x Normal Tactical Training Blu-ray (Trinity) + 8x Damaged Nebra Sky Disk + 20x Broken Disco Colgante

Basic / Enhanced / Sub skill Lv.3 → 4

60,000 Credit Points + 5x Normal Tech Notes (Trinity) + 12x Beginner Tech Notes (Trinity) + 5x Nebra Sky Disk Piece

EX skill Lv.4 → 5

10,000,000 Credit Points + 8x Superior Tactical Training Blu-ray (Trinity) + 18x Advanced Tactical Training Blu-ray (Trinity) + 8x Intact Nebra Sky Disk + 21x Repaired Disco Colgante

Basic / Enhanced / Sub skill Lv.4 → 5

90,000 Credit Points + 8x Normal Tech Notes (Trinity) + 5x Broken Nebra Sky Disk + 15x Disco Colgante Piece

Basic / Enhanced / Sub skill Lv.5 → 6

300,000 Credit Points + 5x Advanced Tech Notes (Trinity) + 12x Normal Tech Notes (Trinity) + 9x Broken Nebra Sky Disk + 18x Disco Colgante Piece

Basic / Enhanced / Sub skill Lv.6 → 7

450,000 Credit Points + 8x Advanced Tech Notes (Trinity) + 4x Damaged Nebra Sky Disk + 18x Broken Disco Colgante

Basic / Enhanced / Sub skill Lv.7 → 8

1,500,000 Credit Points + 8x Superior Tech Notes (Trinity) + 12x Advanced Tech Notes (Trinity) + 5x Intact Nebra Sky Disk + 9x Repaired Disco Colgante

Basic / Enhanced / Sub skill Lv.8 → 9

2,400,000 Credit Points + 12x Superior Tech Notes (Trinity) + 8x Intact Nebra Sky Disk + 12x Repaired Disco Colgante

Basic / Enhanced / Sub skill Lv.9 → 10

4,000,000 Credit Points + 1x Secret Tech Notes

Weapon stars · cost per unique-weapon star

Unique weapon 2★

1,000,000 Credit Points + 120x Seia (Swimsuit)'s Eleph

Unique weapon 3★

1,500,000 Credit Points + 180x Seia (Swimsuit)'s Eleph

Unique weapon 4★

2,000,000 Credit Points + 200x Seia (Swimsuit)'s Eleph

Unique weapon 5★

2,500,000 Credit Points + 1x Seia (Swimsuit)'s Eleph

Unique Weapon

Keen IlluminationATK +606 · HP +4010 · Heal +879

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.

Transcendence · per-star stat bonuses

★★ATK +10.0% HP +5.0% Heal +7.5%★★★ATK +22.0% HP +12.0% Heal +17.5%★★★★ATK +36.0% HP +21.0% Heal +29.5%★★★★★ATK +53.0% HP +35.0% Heal +44.5%

Bond bonuses · max affinity

Evasion+231HP+1165

Equipment slots

GlovesHairpinNecklace

Profile

Full nameYurizono Seia

Age17 years old

BirthdaySeptember 29th

Height4'11"

School year3rd Year

Illustratorkokosando

Voice actor種﨑敦美

HobbySolving puzzles, reading

MottoWaking up to a fairy tale...

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.