101Leafy researched the games.
Alveblade

Giant Sword that fuses azure majesty with pink grace. Its name means "Elvin Monarch".
| Class | Great Sword |
|---|---|
| Rarity | 9 |
| Attack | 1200 |
| Dragon | 240 |
| Defense | +10 |
| Slots | 2 |
| Price | 105,000z |
Upgrades
| Upgraded from | Pael Keizah, Blushing Dame |
|---|---|
| Upgrades into | Brünhild |
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 680.