101Leafy researched the games.
Dual Dragon Ultimus+

Named for the ultimate fear one feels approaching a great wyvern.
| Class | Dual Blades |
|---|---|
| Rarity | 10 |
| Attack | 336 |
| Dragon | 320 |
| Slots | 2 |
| Table price | 150,000z |
Upgrades
| Upgraded from | Ultimus Heaven&Earth |
|---|
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.