101Leafy researched the games.
Daimyo's Warbow IV

Unique Bow that resembles a Daimyo Hermitaur. Capable of sharp attacks.
| Class | Bow |
|---|---|
| Rarity | 6 |
| Attack | 192 |
| Water | 140 |
| Slots | 2 |
| Price | 7,350z |
Upgrades
| Upgraded from | Daimyo's Warbow III |
|---|---|
| Upgrades into | Grt Purple Emperor I |
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 798.
Materials
Hermitaur Carpce ×6, Hermitaur Claw+ ×3, Coral Cphlos Fin ×1, Hrd Monster Bone ×3