

Introduction
Aru is a 3-star Explosive student in Blue Archive. Aru's role is Attacker. School: Gehenna Academy.
On the Blue Archive tier list Aru is A tier, 38th of the 242 students ranked.
Other Explosive students in Blue Archive: Airi, Airi (Band), Akane (School), Akari, Ako (Dress), Asuna (School) and 85 more.
What Aru does
An area damage Attacker. Her EX hits one target for up to 521% and splashes everything around it for up to 554%, with up to 38.3% extra Critical Rate on that EX from her sub skill. Every 25 seconds her normal skill does a smaller version, and her gear upgrade makes its splash guaranteed instead of a 50% chance.
Aru in raids
On the raids usage list Aru is C tier, 39th of 264: brought by 9.6% of ranked Global players to the last 8 raids, on average.
- Raid usage9.58%
By raid, newest first
- Hod (Indoor)2.8%
- Gregorius (Indoor)1.3%
- Hovercraft (Outdoor)4.7%
- Drumbarka (Street)17.2%
- Myouki Kurokage (Street)25.8%
- KAITEN FX Mk.0 (Street)24.3%
- Perorodzilla (Outdoor)0.5%
- Goz (Outdoor)0.1%
Aru's banners
All banners- 14 February 2023 to 28 February 2023Pick-Up Recruitment
- 16 November 2021 to 29 November 2021Pick-Up Recruitment
Profile
The self-proclaimed boss of Problem Solver 68.
Aru expanded Gehenna Academy's Problem Solver 68 club without permission to conduct illegal business activities. She aspires to be seen as a dashing and debonair villain, but her frequent blunders always expose her as a poser.
Aru's full name is Rikuhachima Aru. Aru's birthday is March 12th, and Aru stands 5'2" tall. Aru is voiced by 近藤玲奈 in Japanese and Kwon Jiae in Korean. Aru's hobby is studying management. DoReMi drew Aru.
Stats
- Max HP167th of 26723,838
- ATK20th of 2675,133
- DEF150th of 267109
- Healing210th of 2675,694
- Accuracy35th of 267905
- Evasion160th of 267201
- Crit210th of 267201
- Crit DMG200%
- Stability35th of 2671,988
- Normal Attack Range94th of 267750
- 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: 2,505Level 90, 3 stars: 19,777Level 90, 5 stars: 23,838
- ATKLevel 1, 3 stars: 451Level 90, 3 stars: 4,093Level 90, 5 stars: 5,133
- DEFLevel 1, 3 stars: 19Level 90, 3 stars: 109Level 90, 5 stars: 109
- HealingLevel 1, 3 stars: 1,655Level 90, 3 stars: 4,631Level 90, 5 stars: 5,694
- AccuracyLevel 1, 3 stars: 905Level 90, 3 stars: 905Level 90, 5 stars: 905
- EvasionLevel 1, 3 stars: 201Level 90, 3 stars: 201Level 90, 5 stars: 201
- CritLevel 1, 3 stars: 201Level 90, 3 stars: 201Level 90, 5 stars: 201
- 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: 1,988Level 90, 3 stars: 1,988Level 90, 5 stars: 1,988
- Normal Attack RangeLevel 1, 3 stars: 750Level 90, 3 stars: 750Level 90, 5 stars: 750
- 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: 5Level 90, 3 stars: 5Level 90, 5 stars: 5
- 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
- Back
- Attack type
- Explosive
- Armor type
- Light
- Weapon
- Sniper rifle
- School
Gehenna Academy- Club
- Problem Solver 68
- Year and age
- 2nd Year, 16 years old
- Equipment slots
- Hat, Hairpin, Watch
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
6
Hard-Boiled Shot
EX Skill · Cost 4LevelDeals 521% of ATK as damage to 1 enemy. Also inflicts 554% of ATK as damage to enemies in a circular area.

Noir Attack
Basic SkillLevelDeals 290% of ATK as damage to 1 enemy every 25 sec. Has a 50% chance to inflict 476% of ATK as damage to enemies in a circular area.

Noir Attack+
Basic Skill +LevelDeals 296% of ATK as damage to 1 enemy every 25 sec. Deals 487% of ATK as damage to enemies in a circular area.
Replaces Noir Attack once Aru's Unique Item reaches T2.

The Gravity of a Boss
Enhanced SkillLevelIncreases Crit DMG by 26.6%.

The Gravity of a Boss+
Enhanced Skill +LevelIncreases Crit DMG by 3800. Also increases Crit DMG by 26.6%.
Replaces The Gravity of a Boss once Aru's Exclusive Weapon reaches 2 stars.

Way of the Outlaw
Sub SkillLevelIncreases Crit by 38.3% while using EX skills.
Exclusive Weapon
Upgrade plannerWine Red/Admire
Sniper rifle
A semi-automatic sniper rifle with an antique design cherished by Aru. Her hard-boiled nature intensifies just by carrying it.
- 1 starLv. 30: ATK +589, Max HP +2,039
- 2 starsLv. 40: ATK +737, Max HP +2,549Enhanced Skill becomes The Gravity of a Boss+
- 3 starsLv. 50: ATK +884, Max HP +3,058Urban affinity S to SS
- 4 starsLv. 60: ATK +1,032, Max HP +3,568Explosive damage +10%
Unique Item
Aru's Very Precious Wallet
A high-quality wallet Aru loves. Although it's made of fine material, it's faded and scratched due to long use. Haruka, Kayoko, and Mutsuki saved up and gave it to Aru as a gift after Problem Solver 68 was first established, so it's irreplaceable to her.
- T1Accuracy +150From Relationship Rank 15
- T2Basic Skill becomes Noir Attack+From Relationship Rank 20
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
Aru starts at 3 stars. Each star also lifts the Relationship Rank cap.
Relationship Rank bonus
- 5Total bonus: ATK +16
- 10Total bonus: ATK +46
- 15Total bonus: ATK +81, Max HP +240
- 20Total bonus: ATK +126, Max HP +530
- 25Total bonus: ATK +136, Max HP +580
- 30Total bonus: ATK +146, Max HP +630
- 35Total bonus: ATK +166, Max HP +705
- 40Total bonus: ATK +186, Max HP +780
- 45Total bonus: ATK +216, Max HP +905
- 50Total bonus: ATK +246, Max HP +1,030
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 Aru)
Gifts Aru likes
5Favourites
Buried Treasure Map
Also liked
Antique Egg Handicraft
Extravagant Gilded Jar of Greed
Wind-Up Music Box
World's Most Useless Gadget
A gift gives more Relationship Rank EXP the more of Aru's favourite-item tags it carries. Gifts not listed still give the base amount.
Lines and Memorial Lobby
When recruited: Heh heh. Good choice.
MomoTalk status: I'll solve any problem!

Upgrade costs
Open in the plannerEX Skill
- Lv. 2
Credit Points ×80,000
Beginner Tactical Training Blu-ray (Gehenna) ×12
Rohonc Codex Page ×17 - Lv. 3
Credit Points ×500,000
Normal Tactical Training Blu-ray (Gehenna) ×12
Beginner Tactical Training Blu-ray (Gehenna) ×18
Damaged Rohonc Codex ×14
Rohonc Codex Page ×28 - Lv. 4
Credit Points ×3,000,000
Advanced Tactical Training Blu-ray (Gehenna) ×12
Normal Tactical Training Blu-ray (Gehenna) ×18
Annotated Rohonc Codex ×12
Damaged Rohonc Codex ×24 - Lv. 5
Credit Points ×10,000,000
Superior Tactical Training Blu-ray (Gehenna) ×8
Advanced Tactical Training Blu-ray (Gehenna) ×18
Intact Rohonc Codex ×9
Annotated Rohonc Codex ×18
Basic, Enhanced and Sub Skills
- Lv. 2
Credit Points ×5,000
Beginner Tech Notes (Gehenna) ×5 - Lv. 3
Credit Points ×7,500
Beginner Tech Notes (Gehenna) ×8 - Lv. 4
Credit Points ×60,000
Normal Tech Notes (Gehenna) ×5
Beginner Tech Notes (Gehenna) ×12
Rohonc Codex Page ×6 - Lv. 5
Credit Points ×90,000
Normal Tech Notes (Gehenna) ×8
Damaged Rohonc Codex ×4
Rohonc Codex Page ×14 - Lv. 6
Credit Points ×300,000
Advanced Tech Notes (Gehenna) ×5
Normal Tech Notes (Gehenna) ×12
Damaged Rohonc Codex ×10
Rohonc Codex Page ×16 - Lv. 7
Credit Points ×450,000
Advanced Tech Notes (Gehenna) ×8
Annotated Rohonc Codex ×4
Damaged Rohonc Codex ×18 - Lv. 8
Credit Points ×1,500,000
Superior Tech Notes (Gehenna) ×8
Advanced Tech Notes (Gehenna) ×12
Intact Rohonc Codex ×4
Annotated Rohonc Codex ×7 - Lv. 9
Credit Points ×2,400,000
Superior Tech Notes (Gehenna) ×12
Intact Rohonc Codex ×9
Annotated Rohonc Codex ×16 - Lv. 10
Credit Points ×4,000,000
Secret Tech Notes ×1
Star promotion
- 4 stars
Credit Points ×200,000
Aru's Eleph ×100 - 5 stars
Credit Points ×1,000,000
Aru's Eleph ×120
Exclusive Weapon
- 2 stars
Credit Points ×1,000,000
Aru's Eleph ×120 - 3 stars
Credit Points ×1,500,000
Aru's Eleph ×180 - 4 stars
Credit Points ×2,000,000
Aru's Eleph ×200
Unique Item
- T2
Credit Points ×500,000
Buried Treasure Map ×4
Rohonc Codex Page ×80
Damaged Rohonc Codex ×25
Talent: Max HP
- Lv. 1-5
Credit Points ×500,000
Rohonc Codex Page ×50
Physical Education Workbook ×10 - Lv. 6-10
Credit Points ×500,000
Rohonc Codex Page ×75
Physical Education Workbook ×10 - Lv. 11-15
Credit Points ×500,000
Rohonc Codex Page ×100
Physical Education Workbook ×10 - Lv. 16-20
Credit Points ×1,000,000
Damaged Rohonc Codex ×30
Physical Education Workbook ×20 - Lv. 21-25
Credit Points ×1,000,000
Damaged Rohonc Codex ×40
Physical Education Workbook ×20
Talent: ATK
- Lv. 1-5
Credit Points ×500,000
Rohonc Codex Page ×50
Shooting Workbook ×10 - Lv. 6-10
Credit Points ×500,000
Rohonc Codex Page ×75
Shooting Workbook ×10 - Lv. 11-15
Credit Points ×500,000
Rohonc Codex Page ×100
Shooting Workbook ×10 - Lv. 16-20
Credit Points ×1,000,000
Damaged Rohonc Codex ×30
Shooting Workbook ×20 - Lv. 21-25
Credit Points ×1,000,000
Damaged Rohonc Codex ×40
Shooting Workbook ×20
Talent: Healing
- Lv. 1-5
Credit Points ×500,000
Rohonc Codex Page ×50
Hygiene Workbook ×10 - Lv. 6-10
Credit Points ×500,000
Rohonc Codex Page ×75
Hygiene Workbook ×10 - Lv. 11-15
Credit Points ×500,000
Rohonc Codex Page ×100
Hygiene Workbook ×10 - Lv. 16-20
Credit Points ×1,000,000
Damaged Rohonc Codex ×30
Hygiene Workbook ×20 - Lv. 21-25
Credit Points ×1,000,000
Damaged Rohonc Codex ×40
Hygiene Workbook ×20
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