101Leafy researched the games.
Bone Kris

Every bit as strong as iron, this Bone Sword is good for combo attacks.
| Class | Sword |
|---|---|
| Rarity | 1 |
| Attack | 98 |
| Slots | 0 |
| Price | 390z |
Upgrades
| Upgrades into | Bone Kris+ |
|---|
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 702.
Materials
Sm Monster Bone ×2