101Leafy researched the games.
Great Hornfly Saber

Made from insects, this Long Sword shines like the sun. It makes short work of bugs.
A long sword made with rare insects gathered from all over the world. Besides its rarity, the artistry that the phantom butterfly wings on the guard bring out has made it popular even with people who are not hunters, who say it "truly shines like the sun."
Our translation of 復刻 ハンター大全 (KADOKAWA / Enterbrain, 2014), page 148.
| Class | Long Sword |
|---|---|
| Rarity | 6 |
| Attack | 864 |
| Defense | +20 |
| Slots | 3 |
| Table price | 40,000z |
Upgrades
| Upgrades into | ExceptnlHornflySaber |
|---|
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 696.
Materials
King Scarab ×2, Great Hornfly ×2, Vespoid InnrWng ×5, Monster Broth ×5