101Leafy researched the games.
Final Battleaxe

The actual edge is invisible to the naked eye, making it a poisonous masterpiece.
| Class | Dual Blades |
|---|---|
| Rarity | 10 |
| Attack | 378 |
| Poison | 160 |
| Slots | 1 |
| Price | 110,000z |
Upgrades
| Upgraded from | Dual Battleaxe+ |
|---|
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 714.