The Flying Raijin Blade is a godly one handed sword, which serves as a quest item known as one of the Mystery Weapons.
This starts the quest Thumper Jumper .
These are discovered upon extracting it.
The Flying Raijin Blade is a powerful weapon. It can jump over a small distance and slash it's opponent(s) without even continuing time for a decimal of a second.
This item is rewarded on a 1% chance of being extracted from a Godblessed node, with an Excavation skill of 95.