101Leafy researched the games.
Iron Katana "Gospel"

Made with technology from the Orient. A strong Sword, but requires maintenance.
| Class | Long Sword |
|---|---|
| Rarity | 2 |
| Attack | 576 |
| Slots | 0 |
| Table price | 2,150z |
Upgrades
| Upgraded from | Iron Katana "Grace" |
|---|---|
| Upgrades into | Eager Cleaver, Mirage Finsword, Saber |
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 692.