Koichi Hirose was obtainable for a limited time as a collaboration character in the mobile game Puzzle & Dragons.
![Balanced](https://static.jojowiki.com/images/thumb/e/e3/latest/20230303200508/PADMonsterTypeBalanced.png/25px-PADMonsterTypeBalanced.png)
広瀬康一
Attributes: ![WoodIcon2.png](https://static.jojowiki.com/images/thumb/3/3a/latest/20221221215630/WoodIcon2.png/15px-WoodIcon2.png)
![LightIcon2.png](https://static.jojowiki.com/images/thumb/7/71/latest/20221221215631/LightIcon2.png/15px-LightIcon2.png)
![WoodIcon2.png](https://static.jojowiki.com/images/thumb/3/3a/latest/20221221215630/WoodIcon2.png/15px-WoodIcon2.png)
![LightIcon2.png](https://static.jojowiki.com/images/thumb/7/71/latest/20221221215631/LightIcon2.png/15px-LightIcon2.png)
Rarity: 6★ (Base)
No. 9576
HP
3,747 (Lvl.99)
ATK
2,769 (Lvl.99)
RCV
214 (Lvl.99)
Active Skill: "Echoes ACT1" (Localized Name: "Reverb ACT1")
3x ATK for all sub-monsters for 3 turns; changes to Koichi Hirose & Echoes ACT1
Leader Skill: "Potential to Grow"
[Orb move time: 15 sec], adds 1 combo for each group of 5 linked Orbs; 16x ATK & halves dmg when 3+ Att. attack
![Balanced](https://static.jojowiki.com/images/thumb/e/e3/latest/20230303200508/PADMonsterTypeBalanced.png/25px-PADMonsterTypeBalanced.png)
広瀬康一&エコーズ ACT1
Attributes: ![WoodIcon2.png](https://static.jojowiki.com/images/thumb/3/3a/latest/20221221215630/WoodIcon2.png/15px-WoodIcon2.png)
![LightIcon2.png](https://static.jojowiki.com/images/thumb/7/71/latest/20221221215631/LightIcon2.png/15px-LightIcon2.png)
![WoodIcon2.png](https://static.jojowiki.com/images/thumb/3/3a/latest/20221221215630/WoodIcon2.png/15px-WoodIcon2.png)
![LightIcon2.png](https://static.jojowiki.com/images/thumb/7/71/latest/20221221215631/LightIcon2.png/15px-LightIcon2.png)
Rarity: 7★ (Transformation)
No. 9577
HP
6,206 (Lvl.99)
ATK
3,664 (Lvl.99)
RCV
439 (Lvl.99)
Active Skill: "Believe in me!"
2x ATK for all allies for 1 turn; removes Orb locks, changes Orbs to all Att. & Heal
Leader Skill: "Embedding Sound Into a Person's Body"
[Move time: 15 sec], adds 2 combos for each group of 5 linked Orbs; 24x ATK & reduces dmg by 72% when 3+ Att. attack