101Leafy researched the games.
Edelweiss Ice Blade

Forged through legendary Eastern techniques, it fills the air with ice-cold winds.
The workshop put its proudest new techniques into a conventional long sword handed down from the east, giving the blade as much ice element as possible. In cold regions it goes unnoticed, but if the sword is drawn somewhere with a warm climate, you can see the blade constantly giving off cold air, with white mist swirling around it.
Our translation of 復刻 ハンター大全 (KADOKAWA / Enterbrain, 2014), page 149.
| Class | Long Sword |
|---|---|
| Rarity | 9 |
| Attack | 1104 |
| Ice | 150 |
| Slots | 1 |
| Table price | 75,000z |
Upgrades
| Upgraded from | Aqua Guardian |
|---|---|
| Upgrades into | Edelweiss Ice Blade+ |
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 694.