PI is a combined form of Ranma and Nabiki’s Tree Ships. Dwarfing even the ship of the Goddess Tsunami it is like a floating space station. While it is still capable of separating into the two tree ships that had merged to form the early behemoth during the final battle against Kain, it has not done so in the length of time since. The two space trees have found a peace of sorts with each other. Their branches and roots intertwined in a fashion some might see as signs they were lovers. Of course, with an internal docking bay filled with smaller ships, each holding a space tree, and waiting for a child of either Kuramitsu to bond with, they might further believe that idea.