Silicorundum

Silicorundum (演算中枢)|Enzan Chūsū (Shirikorandamu)|lit. "Calculation Center"|yenpress = silicon-corundum}} is the mysterious technology that is apparently the center of the Tree Diagram's operations, its synapses. It is within the supercomputer, and in turn carried inside the Orihime-1 satellite.

It is rumored that Silicorundum is one of the Imaginary Technologies that originated from the Imaginary Number District–Five Elements Institution. However, since the place is not actually a research facility but a different dimension composed of AIM, the origin of Silicorundum is still unknown.