|Controlled By:||TA, TB, TC|
Takamagahara System (タカマガハラシステム Takamagahara Shisutemu, Plain of High Heaven System) was the Supreme Program, that humanity arrived to and its aim was the management of the Boundary. It consisted of three Observers called TA, TB and TC. Takamagahara was based on the data that was collected when the original Boundary Interface Prime Field Device became the Eye of the Azure.
TA, TB and TC were AIs and they had almost as much power as the Master Unit, Amaterasu. They were invisible beings, but they cast humanoid shadows from chairs to the floor in a white room. They seemed to have one mind and observe all of the possibilities of the timeline, guiding it toward some certain goal. It is implied that they were god-like, but were actually created by humans. They wanted to destroy the Amaterasu Unit as well, but seemed to want to keep time looping to prevent the world from ever ending, with the death of Amaterasu, they hoped to give existence a mechanical, cold sense of order.They released Yūki Terumi to start the Doomsday, and prepared an 'exit strategy' as they could not govern him at times; however, during the split second when Ragna did the impossible, they were distracted, and Terumi managed to infiltrate Takamagahara. He unleashed a magical virus created by Phantom on them, putting them out of commission.
Hades: Izanami took control of Takamagahara once Terumi was finished and proceeded to return to the Cauldron. She remarked that she had stopped time from looping, and shifted causality from "random" to "sequential". She also stated that she turned the world back to how it is meant to be: a "World of Death" like the one she is part of, meaning that there will be no more looping/parallel timelines, and that when things end, they shall end permanently.
Under the control of Izanami, Takamagahara produced enough dimensional interference to negate Ragna's Azure Grimoire, preventing him from using it. According to Terumi, thanks to Izanami's power, Takamaghara's interference level was higher than that of the Successor of the Azure.
Towards the end of BlazBlue: Chronophantasma, Hades: Izanami ordered Phantom to annihilate Takamagahara as she no longer had any use for them. With their death, major phenomenon intervention came to a halt as Amaterasu was summoned into the world.
- In the English version, The Takamagahara System are voiced by Michael McConnohie, Wendee Lee and Bryce Papenbrook.