101Leafy researched the games.
Frightbane

Uses the Electro Sac of a Khezu to electrically charge the blade.
| Class | Sword |
|---|---|
| Rarity | 4 |
| Attack | 196 |
| Thunder | 190 |
| Slots | 1 |
| Price | 2,550z |
Upgrades
| Upgraded from | Thunderbane |
|---|---|
| Upgrades into | Kirin Bolt Indora |
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.