101Leafy researched the games.
Hi Frost Edge

Made from Ice Crystals that have stood the test of time over many millennia.
| Class | Sword |
|---|---|
| Rarity | 6 |
| Attack | 252 |
| Ice | 420 |
| Slots | 2 |
| Table price | 50,000z |
Upgrades
| Upgraded from | Frost Edge+ |
|---|---|
| Upgrades into | Ice Fang |
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 700.