You need to synthisize every item series first. Then, go see Lector, and she'll give you the sphere. You can use it to make the Astral Cane.
---
<--- Nodoka Miyazaki Fanboy
Still holding my breath for the other Marl Kingdom games.
My NIS(A) Game/Accomplishment list is located in my profile. (Warning: Possible Spoilers.)
