The successor to HERMES, the Pseudo-Spiritron Calculator allegedly located in the Atlas Institute.
Since this one lacks the “Pseudo-” label, it’s also able to send and recalculate souls into the real world instead of being limited to the cyberworld.
Spiritron sounds like a term for particles in physics, but don’t think too hard about it. It’s a spiritron computer devised through magecraft concepts, and that’s all you need to know about it.
During Grand Orders, we use the functions of the TRISMEGISTUS to intervene with the past in several ways. (CHALDEAS is not actually necessary for rayshifting. This will turn out to be very important.)