101Leafy researched the games.
Eternal Strife

Weaponsmiths of old worked 108 days straight to make this legendary Dragonsword.
| Class | Sword |
|---|---|
| Rarity | 5 |
| Attack | 126 |
| Dragon | 520 |
| Slots | 0 |
| Price | 40,000z |
Upgrades
| Upgraded from | Tarnished 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 706.