101Leafy researched the games.
Sentoryu Raven

Black blade made from Yian Garuga. This blade can slice anything in half.
| Class | Great Sword |
|---|---|
| Rarity | 5 |
| Attack | 672 |
| Affinity | 20% |
| Slots | 0 |
| Price | 10,000z |
Upgrades
| Upgraded from | Chick Decapitator |
|---|---|
| Upgrades into | Sentoryu Wolf |
Can also be made new at the smithy.
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 682.
Materials
Garuga Wing ×2, Garuga Shell ×3, Garuga Tail ×2, Giant Bone ×2