You need to find the stardust sword in a pretty high level grotto then alchamise it into a nebula sword and alchamise it again into a supernova sword ( there is a 20% chance of it becoming a hupernova sword instead of a supernova sword.
use a sword and kill it
A quest from Tom foolery.
The most powerful sword in Dragon Quest IX is the "Noble's Sword." To obtain it, you need to complete a quest that involves defeating a specific monster called the "Noble's Sword" itself, which can be found in the final dungeon of the game. Once defeated, you will receive the sword as a reward. Additionally, it can also be obtained by completing the "Sword of the Noble" side quest, which requires some exploration and interaction with various NPCs in the game.
Oicu812 = Skullwrath sword Thirteen1 = Badger Helm Dragonkhan8234280 = dragon khan sword
it is in the yesial tree of elfs next to the angel
You can get it from the red dragon in lair.
Stardust Swords are found in high level grottoes. Sometimes (rarely) they may be offered for sale at the DQVC. If you get a Stardust Sword and alchemise it as far as the Supernova Sword, you can return it to being a Stardust Sword by the alchemic recipe of Supernova Sword + Reset Stone. This is useful if you were trying for the alchemiracle Hypernova Sword, and failed, it lets you reset the weapon to the base level rather than have to find another one.
To get the great sword, you need to do the awiergan scrolls quest. On the second part, there is a beacon on which you will find the sword. if you would like help with the scrolls quest let me know -blue
You need a Stardust Sword, one Silver Orb, and one Agate of Evolution.
OICU812=skullwraith-sword thirteen1=badger helm-helmet dragonkhan8234280=dragon khan blade-sword
you can find them in rank s chests in high level grottoes
it is in the Castle Trodain dungeon, which can only be unlocked after you get the key from the lady in the snow area.