101Leafy researched the games.
Wing Bow II

The Hypnocatrice wings add Sleep Add ability, knocking prey out like a light.
| Class | Bow |
|---|---|
| Rarity | 6 |
| Attack | 240 |
| Slots | 1 |
| Price | 13,450z |
Upgrades
| Upgraded from | Wing Bow I |
|---|---|
| Upgrades into | Wing Bow III |
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.