101Leafy researched the games.
Carmine Blade

A Great Sword crafted of a Shogun's giant claw and little work. High Sharpness.
| Class | Great Sword |
|---|---|
| Rarity | 9 |
| Attack | 1200 |
| Slots | 1 |
| Price | 85,000z |
Upgrades
| Upgraded from | Killer's Scythe |
|---|---|
| Upgrades into | Killer's Carver |
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
TerraCeanatrClaw ×5, HrdCeanataurClaw ×3, HvyCeanataurLeg ×3, Ancient Fish ×10