Diamond Is Unbreakable · Special Type · SSR

Koichi Hirose

Stand Reverb Act 2

Diamond is Unbreakable SSR Special Sub DPSTeam Utility
HP
8,082
ATK
9,472
DEF
7,025
Peak skill
520%
Add to team Open in calc
Overview

Koichi Hirose at a glance

Lv 1 baseline straight from the game data — before Star Tree, Spirit Realm, dupes, and gear.

Identity

Part
Diamond Is Unbreakable
Fighting type
Special Type
Rarity
SSR
Stand
Reverb Act 2
Role
Sub DPS

Combat stats

HP
8,082
ATK
9,472
DEF
7,025
Bonus HP
1,616
Bonus ATK
126
Bonus DEF
46
Starting Energy
400 / 1000
Crit Rate
5.0%
Crit Damage
200%
Hit Rate
100%
Block Rate
5.0%
Stand

Reverb Act 2

The signature stand drives every active skill — its passive and ultimate define this character's identity.

Passive

Smack

Applies Onomatopoeia to 1 ally in front at deployment. If no ally is in front or the unit is defeated, targets the ally with the highest Attack. At the end of the duration, deals damage equal to 400% of Koichi Hirose's Attack to all enemies within the area of Onomatopoeia, and Immobilizes them for 3 seconds.

Active

Onomatopoeia

Deals damage equal to 120% of Attack to all enemies within 2 tiles around the target. Applies 1 "Smack" Onomatopoeia words within 2 tiles. Enemies entering the 2-tile area around Smack are Immobilized for 3 seconds. Smack expires after Immobilizing an enemy. Smack placement prioritizes the direction of the enemy closest to Koichi Hirose. Cooldown: 14 seconds.

Full kit

Skills & levels

17 skill rows across 5 tiers. Icons come from the game asset bundle when available.

Smack

Passive SkillPassive
  1. Lv 1

    Applies Onomatopoeia to 1 ally in front at deployment. If no ally is in front or the unit is defeated, targets the ally with the highest Attack. At the end of the duration, deals damage equal to 400% of Koichi Hirose's Attack to all enemies within the area of Onomatopoeia, and Immobilizes them for 3 seconds.

  2. Lv 2

    Increases Onomatopoeia's damage per second to 220% of Attack and the final hit damage to 440% of Attack.

  3. Lv 3

    Increases Onomatopoeia's damage per second to 240% of Attack and the final hit damage to 480% of Attack.

  4. Lv 4

    Increases Onomatopoeia's damage per second to 260% of Attack and the final hit damage to 520% of Attack.

Onomatopoeia

Active SkillActiveCD 3.0sCost 50 Energy
  1. Lv 1

    Deals damage equal to 120% of Attack to all enemies within 2 tiles around the target. Applies 1 "Smack" Onomatopoeia words within 2 tiles. Enemies entering the 2-tile area around Smack are Immobilized for 3 seconds. Smack expires after Immobilizing an enemy. Smack placement prioritizes the direction of the enemy closest to Koichi Hirose. Cooldown: 14 seconds.

  2. Lv 2

    Reduces cooldown to 12 seconds. Increases damage to 160% of Attack.

  3. Lv 3

    Reduces cooldown to 10 seconds. Increases damage to 200% of Attack.

I Won't Forgive You!

Stand Stage IPassive
  1. Lv 1

    Increases Attack and Max HP by 10%. Special Attack: Basic attacks from allies with Onomatopoeia have a 50% chance to deal additional damage equal to 60% of Koichi Hirose's Attack to all enemies within 1 tiles.

  2. Lv 2

    Increases attribute bonuses to 15%, Onomatopoeia trigger chance to 55%, and additional damage to 80% of Koichi Hirose's Attack.

  3. Lv 3

    Increases attribute bonuses to 20%, Onomatopoeia trigger chance to 60%, and additional damage to 100% of Koichi Hirose's Attack.

Reverb ACT 2

Stand Stage IIStand passive
  1. Lv 1

    Ultimate grants 2 stacks of Effect Hit Up to the target ally. When an ally with Onomatopoeia is defeated, immediately triggers Onomatopoeia, dealing damage equal to 440% of Koichi Hirose's Attack to all enemies within 2 tiles.

  2. Lv 2

    Increases damage to 480% of Attack.

  3. Lv 3

    Increases damage to 520% of Attack.

Body-Penetrating Sound

Stand Stage IIIType -3
  1. Lv 1

    When Onomatopoeia deals damage, has a 10% base chance to inflict 1 stack of Attack Down and Spirit Influence to the target hit.

  2. Lv 2

    Increases trigger chance to 20%.

  3. Lv 3

    Increases trigger chance to 30%.

Progression

Star Tree, dupes & recruit ladder

Career-shared upgrade paths. Every Special character draws from the same 22-node Star Tree and 12-stage dupe ladder.

Star Tree HP +600
Star Tree Crit Rate +900
Star Tree Attack +2,400
Star Tree Crit Boost +900
Star Tree Defense +1,500
Star Tree Debuff Proficiency +200
Star Tree Attack Speed +3,000
Star Tree Skill Charge Rate +3,000
Star Tree DMG Boost Rate +200
Star Tree Healing Received Bonus +1,000
Recruit ★ Attack +34,900
Recruit ★ Defense +34,900
Recruit ★ HP +34,900
Star Tree 22 nodes
  1. Node 1
    +200 HP
  2. Node 2
    +200 Crit Rate
  3. Node 3
    +800 Attack
  4. Node 4
    +200 Crit Boost
  5. Node 5
    +500 Defense
  6. Node 6
    +200 Debuff Proficiency
  7. Node 7
    +200 HP
  8. Node 8
    +200 Crit Rate
  9. Node 9
    +800 Attack
  10. Node 10
    +200 Crit Boost
  11. Node 11
    +500 Defense
  12. Node 12
    +1,000 Attack Speed
  13. Node 13
    +200 HP
  14. Node 14
    +1,000 Skill Charge Rate
  15. Node 15
    +800 Attack
  16. Node 16
    +200 DMG Boost Rate
  17. Node 17
    +500 Defense
  18. Node 18
    +1,000 Healing Received Bonus
  19. Node 19
    +500 Crit Rate
  20. Node 20
    +500 Crit Boost
  21. Node 21
    +2,000 Attack Speed
  22. Node 22
    +2,000 Skill Charge Rate
Dupe ladder Stages S0–S11
Stage BasicSkill 1Skill 2Skill 3Skill 4Ultimate Stat gains
S0 111110 —
S1 211112 +200 HP · +200 Attack · +200 Defense
S2 221112 +500 HP · +500 Attack · +500 Defense
S3 222112 +1,000 HP · +500 Attack · +500 Defense
S4 222212 +1,000 HP · +500 Attack · +1,000 Defense
S5 222222 +1,000 HP · +1,000 Attack · +1,000 Defense
S6 322223 +1,500 HP · +1,500 Attack · +1,500 Defense
S7 332223 +2,000 HP · +2,000 Attack · +2,000 Defense
S8 333223 +3,000 HP · +2,000 Attack · +2,000 Defense
S9 333323 +3,000 HP · +2,000 Attack · +3,000 Defense
S10 333333 +3,000 HP · +3,000 Attack · +3,000 Defense
S11 433334 +4,000 HP · +4,000 Attack · +4,000 Defense
Recruit ladder 16 steps
  1. ★1 · step 1
    —
  2. ★1 · step 2
    +300 HP+300 Attack+300 Defense
  3. ★1 · step 3
    +500 HP+500 Attack+500 Defense
  4. ★2 · step 4
    +700 HP+700 Attack+700 Defense
  5. ★2 · step 5
    +1,000 HP+1,000 Attack+1,000 Defense
  6. ★2 · step 6
    +1,200 HP+1,200 Attack+1,200 Defense
  7. ★3 · step 7
    +1,400 HP+1,400 Attack+1,400 Defense
  8. ★3 · step 8
    +1,700 HP+1,700 Attack+1,700 Defense
  9. ★3 · step 9
    +1,900 HP+1,900 Attack+1,900 Defense
  10. ★4 · step 10
    +2,900 HP+2,900 Attack+2,900 Defense
  11. ★4 · step 11
    +3,200 HP+3,200 Attack+3,200 Defense
  12. ★4 · step 12
    +3,400 HP+3,400 Attack+3,400 Defense
  13. ★5 · step 13
    +3,600 HP+3,600 Attack+3,600 Defense
  14. ★5 · step 14
    +3,900 HP+3,900 Attack+3,900 Defense
  15. ★5 · step 15
    +4,100 HP+4,100 Attack+4,100 Defense
  16. ★5 · step 16
    +5,100 HP+5,100 Attack+5,100 Defense