Blue Archive · student
Koyuki
Mystic, HeavyArmor
LV.100Combat
UrbanSOutdoorDIndoorB
Stats · Lv.100 Stats at any level →
HP18560
ATK3471
DEF456
Heal4402
Crit209
Crit DMG200%
Crit RES100
Stability1332
Accuracy104
Evasion190
Range750
DEF Pen—
CC Power100
CC RES100
Ammo25
Ammo cost5
Move Speed200
Heal Effectiveness10000
Skills
Unexpected Variable
Deals damage by throwing 1 bomb arbitrarily at enemies in a circular area. Bullet: Deals 444% of ATK as damage. Electric Field: Deals 421% of ATK as damage. Flame: Deals 398% of ATK as damage.
Drag to see per-level scalingOne? Or Two?!+
Deals 463% of ATK as damage to 1 target, and up to 3 nearby enemies, every 30 sec. Reloads instantly. After defeating 6 enemies with Basic Skill, decreases its own EX Skill Cost by 3 (up to 1 time).
Drag to see per-level scalingDo You Believe in Miracles?+
Increases ATK by 792. Also increases ATK by 26.6%.
Drag to see per-level scalingButterfly Effect
Increases ATK when using an EX Skill, based on the type of bomb used (for 40 sec). Bullet: Increases ATK by 29.1%. Electric Field: Increases ATK by 27.5%. Flame: Increases ATK by 26%.
Drag to see per-level scalingLoved gifts · raise this student's affinity the most
Board Game "The Life"SSRWorld's Most Useless GadgetSR
Liked gifts · genre favorites — extra affinity
Brain Teaser Puzzle CubeSR · matches 2 tags30-Color Paint SetSRAstronomical TelescopeSRCosplayer Coke-Bottle GlassesSRTeddy Bear with BowSR
Star levels · credits and Eleph per star
2★
10,000 Credit Points + 30x Koyuki's Eleph
3★
40,000 Credit Points + 80x Koyuki's Eleph
4★
200,000 Credit Points + 100x Koyuki's Eleph
5★
1,000,000 Credit Points + 120x Koyuki's Eleph
Skill levels · per skill slot, per level
EX skill Lv.1 → 2
80,000 Credit Points + 12x Beginner Tactical Training Blu-ray (Millennium) + 12x Voynich Manuscript Page
Basic / Enhanced / Sub skill Lv.1 → 2
5,000 Credit Points + 5x Beginner Tech Notes (Millennium)
EX skill Lv.2 → 3
500,000 Credit Points + 12x Normal Tactical Training Blu-ray (Millennium) + 18x Beginner Tactical Training Blu-ray (Millennium) + 13x Damaged Voynich Manuscript + 31x Crystal Haniwa Fragment
Basic / Enhanced / Sub skill Lv.2 → 3
7,500 Credit Points + 8x Beginner Tech Notes (Millennium)
EX skill Lv.3 → 4
3,000,000 Credit Points + 12x Advanced Tactical Training Blu-ray (Millennium) + 18x Normal Tactical Training Blu-ray (Millennium) + 11x Annotated Voynich Manuscript + 24x Broken Crystal Haniwa
Basic / Enhanced / Sub skill Lv.3 → 4
60,000 Credit Points + 5x Normal Tech Notes (Millennium) + 12x Beginner Tech Notes (Millennium) + 4x Voynich Manuscript Page
EX skill Lv.4 → 5
10,000,000 Credit Points + 8x Superior Tactical Training Blu-ray (Millennium) + 18x Advanced Tactical Training Blu-ray (Millennium) + 6x Intact Voynich Manuscript + 20x Repaired Crystal Haniwa
Basic / Enhanced / Sub skill Lv.4 → 5
90,000 Credit Points + 8x Normal Tech Notes (Millennium) + 4x Damaged Voynich Manuscript + 14x Crystal Haniwa Fragment
Basic / Enhanced / Sub skill Lv.5 → 6
300,000 Credit Points + 5x Advanced Tech Notes (Millennium) + 12x Normal Tech Notes (Millennium) + 10x Damaged Voynich Manuscript + 18x Crystal Haniwa Fragment
Basic / Enhanced / Sub skill Lv.6 → 7
450,000 Credit Points + 8x Advanced Tech Notes (Millennium) + 3x Annotated Voynich Manuscript + 14x Broken Crystal Haniwa
Basic / Enhanced / Sub skill Lv.7 → 8
1,500,000 Credit Points + 8x Superior Tech Notes (Millennium) + 12x Advanced Tech Notes (Millennium) + 4x Intact Voynich Manuscript + 8x Repaired Crystal Haniwa
Basic / Enhanced / Sub skill Lv.8 → 9
2,400,000 Credit Points + 12x Superior Tech Notes (Millennium) + 8x Intact Voynich Manuscript + 14x Repaired Crystal Haniwa
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 Koyuki's Eleph
Unique weapon 3★
1,500,000 Credit Points + 180x Koyuki's Eleph
Unique weapon 4★
2,000,000 Credit Points + 200x Koyuki's Eleph
Unique weapon 5★
2,500,000 Credit Points + 1x Koyuki's Eleph
Gear tiers · cost per tier
Gear T1
500,000 Credit Points + 4x World's Most Useless Gadget + 80x Voynich Manuscript Page + 25x Damaged Voynich Manuscript
Unique Weapon
Mulli-Gun
A machine gun that's been through the wringer alongside Koyuki.
Once, it was entirely submerged in seawater. During the repair process, its color changed. Other than that, it's still as sturdy as Koyuki, who never worries about such trivialities.
Transcendence · per-star stat bonuses
★★★ATK +10.0% HP +5.0% Heal +7.5%★★★★★ATK +12.0% HP +7.0% Heal +10.0%
Bond bonuses · max affinity
DEF+227HP+1005
Equipment slots
GlovesHairpinWatch
Profile
Full nameKurosaki Koyuki
Age15 years old
BirthdayFebruary 14th
Height4'11"
School year1st Year
IllustratorMISOM150
Voice actor乾夏寧
HobbyTesting her luck, escaping
MottoIt's my fault?!
A brilliant yet troublesome member of Millennium's Seminar. She's completely unaware of her unrivaled talent for mathematical decryption. She always sets out to test her luck. Even if she goes too far and lands in hot water, she never stops.
How Koyuki compares · vs 54 ★★★ Mystic students
Measured against 54 comparable students, Koyuki is middle-of-the-pack for its cohort (50th percentile on average). Its strongest number is ATK at 3471 — 82nd percentile, rank 10 of 54 — while HP is its weakest at 18560, ranking 41 of 54.
HP18560
25th percentile · rank 41 of 54 · cohort median 21420 (-13%)
ATK3471
82nd percentile · rank 10 of 54 · cohort median 2459 (+41%)
DEF456
72nd percentile · rank 15 of 54 · cohort median 136 (+235%)
Heal4402
42nd percentile · rank 32 of 54 · cohort median 4421 (0%)
Crit209
30th percentile · rank 37 of 54 · cohort median 216 (-3%)
Closest students · nearest on ATK
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