It had been said before that this world was incredibly grand, with a vast worldview that extended far beyond what Reiger had seen up to now.
This time's Dimensional Travel brought Reiger to the Fairy Country Britain as part of an anomaly zone, but Fairy Country Britain was just one of many such zones in this world. The crumbling phenomenon occurring here that had a noxious impact on human history was but one of the many disasters threatening humanity.
Hence, organizations such as Chaldea that safeguard humanity were born.
Its purpose was to repair the foundations of humanity, protect human history, and ensure that it could continue to develop and persist amid a plethora of threats.
Fujimaru Ritsuka, a Master, wasn't facing a threat to human history for the first time. Before Fairy Country Britain, he had already faced many incidents, some of which posed even greater danger than the crumbling phenomenon in Fairy Country Britain.
