101Leafy researched the games.
Sandman Finsword

Made from Plesioth fin. Puts pierced enemies to sleep with a powerful toxin.
| Class | Sword |
|---|---|
| Rarity | 4 |
| Attack | 182 |
| Sleep | 230 |
| Slots | 1 |
| Table price | 2,550z |
Upgrades
| Upgraded from | Weary Finsword |
|---|---|
| Upgrades into | Sandman Spike |
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.