Kessaku Systems (formerly Kessaku Electronic Systems until a name change in YE 34) is a leading developer of computer, communications, and sensor systems in the Yamatai Star Empire. It is part of the Ketsurui Zaibatsu. Kessaku Systems created and maintains PANTHEON and the Nekovalkyrja operating system. The head of Kessaku Systems is the brilliant Kessaku Anri.