101Leafy researched the games.
Volcanic Storm

Miraculous weapon that joins the powers of Fire & Water. It chooses its own user.
| Class | Dual Blades |
|---|---|
| Rarity | 10 |
| Attack | 364 |
| Slots | 0 |
| Price | 115,000z |
Upgrades
| Upgraded from | Firestorm |
|---|
Upgrade tree from モンスターハンターポータブル 2nd G 公式ガイドブック (Enterbrain, 2008), page 712.