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Rio

Millennium Science School

Rio

★★★

/Mystic/Support

Stier

Introduction

Rio is a 3-star Mystic student in Blue Archive. Rio's role is Support. School: Millennium Science School.

On the Blue Archive tier list Rio is S tier, 6th of the 242 students ranked.

Other Mystic students in Blue Archive: Akane (Bunny), Akari (New Year), Ako, Aris, Aris (Armed), Aris (Maid) and 61 more.

What Rio does

Copies an ally's EX: she draws a card, makes a one-use duplicate of the target's EX at 1 less Cost, and gives that ally up to 51.4% more Attack for 20 seconds. Every 30 seconds she also cuts one enemy's Defense.

Rio in raids

On the raids usage list Rio is S tier, 7th of 264: brought by 41% of ranked Global players to the last 8 raids, on average.

  • Raid usage40.92%

By raid, newest first

  • Hod (Indoor)57%
  • Gregorius (Indoor)1%
  • Hovercraft (Outdoor)40.5%
  • Drumbarka (Street)24.2%
  • Myouki Kurokage (Street)78.1%
  • KAITEN FX Mk.0 (Street)36.6%
  • Perorodzilla (Outdoor)83.7%
  • Goz (Outdoor)6.3%

Rio's banners

All banners
  • 15 July 2025 to 22 July 2025Fes Recruitment

Profile

President of Seminar, the student council of Millennium School.

Her desires for peace, in Millennium and the world, drive her to do whatever she thinks is necessary. As a result, she became known as everyone's "big sister." Her stylistic and aesthetic tastes are quite unique. Her Avant Guard robot corps, which is known only to a few students, exemplifies those tastes.

Rio's full name is Tsukatsuki Rio. Rio's birthday is June 6th, and Rio stands 5'7" tall. Rio is voiced by Lynn in Japanese and Kim Pureum in Korean. Rio's hobby is designing. Mx2J drew Rio.

Stats

  • Max HP62nd30,119
  • ATK166th3,056
  • DEF26th599
  • Healing100th6,203
  • Accuracy81st714
  • Evasion18th1,151
  • Crit82nd238
  • Crit DMG200%
  • Stability196th1,201
  • 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: 3,664Level 90, 3 stars: 24,988Level 90, 5 stars: 30,119
  • ATKLevel 1, 3 stars: 268Level 90, 3 stars: 2,437Level 90, 5 stars: 3,056
  • DEFLevel 1, 3 stars: 109Level 90, 3 stars: 599Level 90, 5 stars: 599
  • HealingLevel 1, 3 stars: 1,803Level 90, 3 stars: 5,044Level 90, 5 stars: 6,203
  • AccuracyLevel 1, 3 stars: 714Level 90, 3 stars: 714Level 90, 5 stars: 714
  • EvasionLevel 1, 3 stars: 1,151Level 90, 3 stars: 1,151Level 90, 5 stars: 1,151
  • CritLevel 1, 3 stars: 238Level 90, 3 stars: 238Level 90, 5 stars: 238
  • 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: 1,201Level 90, 3 stars: 1,201Level 90, 5 stars: 1,201
  • 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
Mystic
Armor type
Elastic
Weapon
Handgun
School
Millennium Science School
Club
Seminar
Year and age
3rd Year, 17 years old
Equipment slots
Shoes, Hairpin, Watch

Terrain affinity

  • UrbanA
  • 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

  • Big Sister

    EX Skill · Cost 2
    Level

    Immediately draws EX Skill and copies EX Skill Card of 1 ally (until 1 use of copied card). Increases the target's ATK by 51.4% (for 20 sec). (Copied card follows the state of target's EX Skill Card.) (Copied card costs 1 less Cost than the target EX Skill's basic Cost.) (Min Cost: 0)

  • The Only Truth

    Basic Skill
    Level

    Decreases DEF of 1 enemy by 25.5% (for 19 sec) every 30 sec. Deals 297% of ATK as damage.

  • One Who Chases Stars

    Enhanced Skill
    Level

    Increases ATK by 26.6%.

  • One Who Chases Stars+

    Enhanced Skill +
    Level

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

    Replaces One Who Chases Stars once Rio's Exclusive Weapon reaches 2 stars.

  • Avant Guard

    Sub Skill
    Level

    Increases ally ATK by 17.3%.

Exclusive Weapon

Upgrade planner

Policy Maker

Handgun

Rio's self-defense pistol. Although she's not a particularly good shot, she carries it everywhere with her, reasoning that it would be foolish not to carry a gun in Kivotos.

  • 1 starLv. 30: ATK +351, Max HP +2,588, Healing +655
  • 2 starsLv. 40: ATK +439, Max HP +3,235, Healing +819Enhanced Skill becomes One Who Chases Stars+
  • 3 starsLv. 50: ATK +527, Max HP +3,881, Healing +983Indoor affinity S to SS
  • 4 starsLv. 60: ATK +614, Max HP +4,529, Healing +1,147MaxCostIncrease +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

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

Relationship Rank bonus

  • 5Total bonus: ATK +8
  • 10Total bonus: ATK +23
  • 15Total bonus: ATK +43, Max HP +305
  • 20Total bonus: ATK +68, Max HP +670
  • 25Total bonus: ATK +73, Max HP +730
  • 30Total bonus: ATK +78, Max HP +790
  • 35Total bonus: ATK +88, Max HP +880
  • 40Total bonus: ATK +98, Max HP +970
  • 45Total bonus: ATK +113, Max HP +1,120
  • 50Total bonus: ATK +128, Max HP +1,270

Stats stop growing at rank 50.

Talents

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

Gifts Rio likes

6

Favourites

  • Airbook Rare
  • A-Pods Pro
  • Cosplayer Coke-Bottle Glasses
  • Extravagant Gilded Jar of Greed
  • Gamegirl Color Replica
  • Potted Bug-Eating Plant

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

Lines and Memorial Lobby

When recruited: We'll meet again in a place where light doesn't shine.

MomoTalk status: Tasklist

Rio's Recollection Lobby
Rio's Recollection Lobby

Upgrade costs

Open in the planner

EX Skill

  • Lv. 2Credit Points ×80,000Beginner Tactical Training Blu-ray (Millennium) ×12Disco Colgante Piece ×13
  • Lv. 3Credit Points ×500,000Normal Tactical Training Blu-ray (Millennium) ×12Beginner Tactical Training Blu-ray (Millennium) ×18Broken Disco Colgante ×15Crystal Haniwa Fragment ×33
  • Lv. 4Credit Points ×3,000,000Advanced Tactical Training Blu-ray (Millennium) ×12Normal Tactical Training Blu-ray (Millennium) ×18Repaired Disco Colgante ×13Broken Crystal Haniwa ×24
  • Lv. 5Credit Points ×10,000,000Superior Tactical Training Blu-ray (Millennium) ×8Advanced Tactical Training Blu-ray (Millennium) ×18Intact Disco Colgante ×11Repaired Crystal Haniwa ×13

Basic, Enhanced and Sub Skills

  • Lv. 2Credit Points ×5,000Beginner Tech Notes (Millennium) ×5
  • Lv. 3Credit Points ×7,500Beginner Tech Notes (Millennium) ×8
  • Lv. 4Credit Points ×60,000Normal Tech Notes (Millennium) ×5Beginner Tech Notes (Millennium) ×12Disco Colgante Piece ×5
  • Lv. 5Credit Points ×90,000Normal Tech Notes (Millennium) ×8Broken Disco Colgante ×5Crystal Haniwa Fragment ×14
  • Lv. 6Credit Points ×300,000Advanced Tech Notes (Millennium) ×5Normal Tech Notes (Millennium) ×12Broken Disco Colgante ×7Crystal Haniwa Fragment ×15
  • Lv. 7Credit Points ×450,000Advanced Tech Notes (Millennium) ×8Repaired Disco Colgante ×3Broken Crystal Haniwa ×19
  • Lv. 8Credit Points ×1,500,000Superior Tech Notes (Millennium) ×8Advanced Tech Notes (Millennium) ×12Intact Disco Colgante ×5Repaired Crystal Haniwa ×11
  • Lv. 9Credit Points ×2,400,000Superior Tech Notes (Millennium) ×12Intact Disco Colgante ×6Repaired Crystal Haniwa ×13
  • Lv. 10Credit Points ×4,000,000Secret Tech Notes ×1

Star promotion

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

Exclusive Weapon

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

Talent: Max HP

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

Talent: ATK

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

Talent: Healing

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

Art

Rio key art

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