101Leafy researched the games.
Odyssey Blade

Single bladed short Sword imbued with the power of water to wash away blood.
| Class | Sword |
|---|---|
| Rarity | 7 |
| Attack | 280 |
| Water | 350 |
| Slots | 1 |
| Price | 55,000z |
Upgrades
| Upgraded from | Odyssey+ |
|---|---|
| Upgrades into | Master Odyssey, Heavy Bang, Thunderblade Vajra |
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 698.