How do you get ultimate weapon in kingdom hearts 2

Ultima weapons materials:

7 orichalum+:
1. clear atlantica
2. clear 100 acre woods
3. the smal chest in the world that never was in the brink of despare
beside the big chest.
4.clear Goddess Of Fate Cup in Olympus colisium.
5.chest in twiligh town in sunset terrace jump on to the moving train
then go up one of the buildings. search it until you find it.
6. chest in space paranoid(the second visit there) just before you fight
commander sark and the MCP.
7. collect all materials including all materials. You need every
meaterial in the game(shard,stones,gems,and crystals.

1 of the two chests in the Imperial Palace in the Land of the Dragons there are two chests behind the Emperor's seat and one of the contains an orichalum.

Energy Crystal:
-required to have the ammount of orichalum+s you need. This is dropped
by bookmasters in Radiant Garden/Hollow Bastion near Merlin's House. These are
charcaters are green and floats w/ bookks.

Twilight and Dense Crystal:
-Nobodies on Naught Skyway. Go to Naught skyway in The World That Never
Was. Go fight the nobodies in there to get the Twilight and Dense crystal and
items.

Serenity crystal:
- You can get these from the Moogles for giving them complete sets of
materials. Another thing to get serenity crystals is to defeat "Nobody
Assasins" in The World That Never Was.
They can also be found in random battles wiht nobodies in the Old Mansion in Twilight Town.

Mythril crystals:
-Found in random item chest.

Regular Orichalum:
-Found in random item chest.

Item/needed:
Orichalum+:7
Oichalum: 3
Energy Crystal: 1
Twilight Crystal: 1
Dense Crystal: 1
Mythril Crystal: 1
Serenity Crystal: 7

NOTE:
-The Ultimate Recipe is in the old mansion. Go to the room where Goofy
and Donald slept in one of the pods in the under ground computer room. There
you will see beside a small chest, that's where you will see the ultimate
recipe.

- In the recipe its says that you need 13 orichalum+, don't bother
finding the 13 orichalum+ because there's only 7 orichalum+ in the game. So
only get all 7 orichalum+ for the Ultima Weapon.
NOTE:
-If you attain Rank S with your synthesis moogle, all Rank S recipes will be reduced to 1/2 requirements. Use your crystal to reduce the requirements further when synthesizing, and you only need 5 Orichalcum+.
You have to find the 'Ultimate Recipe' in a treasure chest in Twilight Town - in the mansion basement. Then you have to get all the items needed to syntesize it and then synthesize it. Tips - synthesize a lot - until your moogle is to the highest level possible by synthesizing master the items used to cut recipes in half and make items of a higher rank find a couple Orichalcum+s (around 4) in tresure chests (Jiminy's Journal will tell you how many you've opened and where) the best place to find synthesis items is in The World That Never Was - starting from the top (where the door is that you enter to beat Xemnas) and working your way to the bottom (Memory's Skyscraper) several times while beating EVERY heartless you see - you gain items slow, but it works much faster than other worlds (I've tried persolaly) - doing this also gains about 1-3 levels per trip down so you can reach level 99 and beat Sephiroth in Hollow Bastion - through the gate (close to the Bailey) and as far away as you can be from the central part
lvl 9 moogle synthesis
find the recipe at twillight town
7 orichalcum+
14 orichalcum
and other items