101Leafy researched the games.
Raven Tessen

Black fan, made from Garuga, that minces everything in a blink of an eye.
| Class | Dual Blades |
|---|---|
| Rarity | 5 |
| Attack | 196 |
| Affinity | 25% |
| Slots | 1 |
| Price | 10,000z |
Upgrades
| Upgraded from | Twin Kut-Ku |
|---|---|
| Upgrades into | Wolf Tessen |
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 710.
Materials
Garuga Mane ×2, Garuga Ear ×2, Garuga Scale ×10, Med Monster Bone ×4