101Leafy researched the games.
Expert Blade

Inscribed with "Well Done", this Sword is given to the top students in training.
| Class | Great Sword |
|---|---|
| Rarity | 8 |
| Attack | 1008 |
| Slots | 3 |
| Price | 20,000z |
Upgrades
| Upgraded from | Black Belt Blade |
|---|---|
| Upgrades into | Warrior's Blade |
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 688.