101Leafy researched the games.
Kut-Ku Stave I

Fire breathing hunting Bow made from Yian Kut-Ku. Said to be user friendly.
A bow that hunters who have taken down many Yian Kut-Ku with the Hunter's Bow often make as their next step. The counterweight on its center, which recalls a Yian Kut-Ku's beak, is one of many touches that show the workshop craftsmen's playful side.
Our translation of 復刻 ハンター大全 (KADOKAWA / Enterbrain, 2014), page 175.
| Class | Bow |
|---|---|
| Rarity | 2 |
| Attack | 120 |
| Fire | 80 |
| Slots | 1 |
| Table price | 1,500z |
Upgrades
| Upgrades into | Kut-Ku Stave II |
|---|
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 796.
Materials
Kut-Ku Shell ×5, Kut-Ku Scale ×5, Flame Sac ×2, Carpenterbug ×4