101Leafy researched the games.
Cyclone

Dual Swords with a form optimized for slicing through flesh.
| Class | Dual Blades |
|---|---|
| Rarity | 7 |
| Attack | 308 |
| Slots | 2 |
| Price | 50,000z |
Upgrades
| Upgraded from | Hurricane |
|---|---|
| Upgrades into | Tornado Tomahawks |
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.