101Leafy researched the games.
Diablos Horn Bow I
Japanese name: ブロスホーンボウⅠ (Monster Hunter Portable 2nd G official guidebook, Enterbrain, 2008, pp. 796–803).

Crafted from twisted horns. Mastery allows for fine adjustments in aiming.
| Weapons | Bow |
|---|---|
| Rarity | 6 |
| Attack | 216 |
| Affinity | +10% |
| Defense bonus | +10 |
| Slots | 1 |
| Price | 20,500z |
Charge Attack
- Pierce 2
- Pierce 2
- Pierce 3
- Scatter 2 (Load Up)
Usable Coating
Materials
Forge
Upgrades to
Bow
From the guide book
Endless arrows from nimble footwork
With the Bow you move at a distance from the monster while drawing the string, then put the built-up power into an arrow and let it fly. The higher the charge level, the more power it has, but your Stamina drops while you charge. Unlike Bowguns, arrows are never used up, so you can fire as many as you like.
Our translation of the Monster Hunter Portable 2nd G official guidebook (Enterbrain, 2008), p. 176.