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Serina (Christmas)

Trinity General School

Serina (Christmas)

★★★

/Piercing/Support

Dtier

Introduction

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

On the Blue Archive tier list Serina (Christmas) is D tier, 218th 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 Serina (Christmas) does

Buffs Critical Damage for allies near her: her EX gives up to 43.5% for 50 seconds plus a Holy Night Blessing stack, and each stack adds Penetration damage against enemies weak to it. Her normal attacks also toss random Critical Damage gifts to nearby allies.

Serina (Christmas) in raids

On the raids usage list Serina (Christmas) is D tier, 233rd of 264: brought by 0.1% of ranked Global players to the last 8 raids, on average.

  • Raid usage0.13%

By raid, newest first

  • Hod (Indoor)0.2%
  • Gregorius (Indoor)0%
  • Hovercraft (Outdoor)0%
  • Drumbarka (Street)0%
  • Myouki Kurokage (Street)0.1%
  • KAITEN FX Mk.0 (Street)0.3%
  • Perorodzilla (Outdoor)0.3%
  • Goz (Outdoor)0.1%

Serina (Christmas)'s banners

All banners
  • 19 August 2025 to 26 August 2025Pick-Up Recruitment
  • 6 August 2024 to 13 August 2024Pick-Up Recruitment
  • 13 June 2023 to 27 June 2023Pick-Up Recruitment

Profile

A member of the Trinity Remedial Knights. She's dressed in a Santa outfit to celebrate Christmas.

She's spending her Christmas volunteering for charity work. Anyone who watches her singing carols and giving out her handmade gifts would think that she was an angel who came down from heaven for Christmas.

Serina (Christmas)'s full name is Sumi Serina. Serina (Christmas)'s birthday is January 6th, and Serina (Christmas) stands 5'1" tall. Serina (Christmas) is voiced by 涼本あきほ in Japanese and Lee Dallae in Korean. Serina (Christmas)'s hobby is nursing patients and charity work. CHILD drew Serina (Christmas).

Stats

  • Max HP148th25,012
  • ATK184th2,894
  • DEF244th99
  • Healing105th6,193
  • Accuracy60th765
  • Evasion135th724
  • Crit96th218
  • Crit DMG200%
  • Stability190th1,268
  • Normal Attack Range147th650
  • 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: 2,282Level 90, 3 stars: 20,751Level 90, 5 stars: 25,012
  • ATKLevel 1, 3 stars: 254Level 90, 3 stars: 2,307Level 90, 5 stars: 2,894
  • DEFLevel 1, 3 stars: 18Level 90, 3 stars: 99Level 90, 5 stars: 99
  • HealingLevel 1, 3 stars: 1,799Level 90, 3 stars: 5,036Level 90, 5 stars: 6,193
  • AccuracyLevel 1, 3 stars: 765Level 90, 3 stars: 765Level 90, 5 stars: 765
  • EvasionLevel 1, 3 stars: 724Level 90, 3 stars: 724Level 90, 5 stars: 724
  • CritLevel 1, 3 stars: 218Level 90, 3 stars: 218Level 90, 5 stars: 218
  • 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: 1,268Level 90, 3 stars: 1,268Level 90, 5 stars: 1,268
  • Normal Attack RangeLevel 1, 3 stars: 650Level 90, 3 stars: 650Level 90, 5 stars: 650
  • 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: 15Level 90, 3 stars: 15Level 90, 5 stars: 15
  • 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
Assault rifle
School
Trinity General School
Club
Remedial Knights
Year and age
2nd Year, 16 years old
Equipment slots
Shoes, Hairpin, Charm

Terrain affinity

  • UrbanD
  • OutdoorS (SS with the weapon at 3 stars)
  • IndoorB

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

Skills

5

  • Echo of Blessings

    EX Skill · Cost 4
    Level

    Increases Crit DMG by 43.5% for allies, other than the user, in a circular area (for 50 sec). Accumulates 1 Holy Night's Blessing (stacks up to 15 times.) Increases Piercing Effectiveness by 3.7% multiplied by the number of Holy Night's Blessings (for 50 sec).

  • Assorted Gift Set C

    Basic Skill
    Level

    Throws gifts to allies, other than the user, in a circular area every 21 normal attacks (for 30 sec). Green Box: Increases Crit DMG by 21% Red Box: Increases Crit DMG by 24% Teddy Bear: Increases Crit DMG by 27%.

  • Guardian Angel's Will

    Enhanced Skill
    Level

    Increases Max HP by 26.6%.

  • Guardian Angel's Will+

    Enhanced Skill +
    Level

    Increases DEF by 380. Also increases Max HP by 26.6%.

    Replaces Guardian Angel's Will once Serina (Christmas)'s Exclusive Weapon reaches 2 stars.

  • Holy Aegis

    Sub Skill
    Level

    Increases Evasion by 34.4% upon reloading (for 15 sec).

Exclusive Weapon

Upgrade planner

Tactical Therapy

Assault rifle

Serina's special assault rifle. It doesn't fire needles, but it carries a double dose of Serina's love.

  • 1 starLv. 30: ATK +332, Max HP +2,131
  • 2 starsLv. 40: ATK +415, Max HP +2,663Enhanced Skill becomes Guardian Angel's Will+
  • 3 starsLv. 50: ATK +498, Max HP +3,196Outdoor affinity S to SS
  • 4 starsLv. 60: ATK +582, Max HP +3,729Piercing 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

Serina (Christmas) starts at 3 stars. Each star also lifts the Relationship Rank cap.

Relationship Rank bonus

  • 5Total bonus: Max HP +80
  • 10Total bonus: Max HP +235
  • 15Total bonus: Max HP +440, ATK +25
  • 20Total bonus: Max HP +695, ATK +55
  • 25Total bonus: Max HP +760, ATK +60
  • 30Total bonus: Max HP +825, ATK +65
  • 35Total bonus: Max HP +925, ATK +75
  • 40Total bonus: Max HP +1,025, ATK +85
  • 45Total bonus: Max HP +1,190, ATK +100
  • 50Total bonus: Max HP +1,355, ATK +115

Stats stop growing at rank 50.

Talents

  • Max HP25 levels, up to +5%
  • ATK25 levels, up to +5%
  • Healing25 levels, up to +5% (little use for Serina (Christmas))

Gifts Serina (Christmas) likes

5

Favourites

  • Jellies Cushion

Also liked

  • Lace Pillow
  • Nutrient-Packed Multivitamin Gummies
  • Health Food Supplement
  • Wavecat Pillow

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

Lines and Memorial Lobby

When recruited: The Remedial Knights are here to deliver Christmas cheer! Merry Christmas to all!

MomoTalk status: Peace and joy to all during the Christmas season.

Serina (Christmas)'s Recollection Lobby
Serina (Christmas)'s Recollection Lobby

Upgrade costs

Open in the planner

EX Skill

  • Lv. 2Credit Points ×80,000Beginner Tactical Training Blu-ray (Trinity) ×12Mandrake Seed ×13
  • Lv. 3Credit Points ×500,000Normal Tactical Training Blu-ray (Trinity) ×12Beginner Tactical Training Blu-ray (Trinity) ×18Mandrake Sprout ×13Wolfsegg Iron Ore ×30
  • Lv. 4Credit Points ×3,000,000Advanced Tactical Training Blu-ray (Trinity) ×12Normal Tactical Training Blu-ray (Trinity) ×18Mandrake Juice ×7Wolfsegg Steel ×25
  • Lv. 5Credit Points ×10,000,000Superior Tactical Training Blu-ray (Trinity) ×8Advanced Tactical Training Blu-ray (Trinity) ×18Mandrake Extract ×8Low-Purity Wolfsegg Steel ×19

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) ×12Mandrake Seed ×5
  • Lv. 5Credit Points ×90,000Normal Tech Notes (Trinity) ×8Mandrake Sprout ×4Wolfsegg Iron Ore ×12
  • Lv. 6Credit Points ×300,000Advanced Tech Notes (Trinity) ×5Normal Tech Notes (Trinity) ×12Mandrake Sprout ×10Wolfsegg Iron Ore ×18
  • Lv. 7Credit Points ×450,000Advanced Tech Notes (Trinity) ×8Mandrake Juice ×3Wolfsegg Steel ×16
  • Lv. 8Credit Points ×1,500,000Superior Tech Notes (Trinity) ×8Advanced Tech Notes (Trinity) ×12Mandrake Extract ×4Low-Purity Wolfsegg Steel ×8
  • Lv. 9Credit Points ×2,400,000Superior Tech Notes (Trinity) ×12Mandrake Extract ×8Low-Purity Wolfsegg Steel ×14
  • Lv. 10Credit Points ×4,000,000Secret Tech Notes ×1

Star promotion

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

Exclusive Weapon

  • 2 starsCredit Points ×1,000,000Serina (Christmas)'s Eleph ×120
  • 3 starsCredit Points ×1,500,000Serina (Christmas)'s Eleph ×180
  • 4 starsCredit Points ×2,000,000Serina (Christmas)'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

Serina (Christmas) key art

More Piercing students

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