101Leafy researched the games.
Chrome Razor

As the name implies, it features A+ Sharpness infused with poison.
| Class | Great Sword |
|---|---|
| Rarity | 5 |
| Attack | 816 |
| Poison | 320 |
| Slots | 0 |
| Price | 7,150z |
Upgrades
| Upgraded from | Ravager Blade+ |
|---|---|
| Upgrades into | Chrome Death Razor, Carbalite Sword |
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 684.