Great Guardian Purge

"There was once a young Guardian by the name of Inbouka. He was a close friend of my best friend until he fell from grace and purged Tougenkyou of its glorious protectors, caused wide-spread destruction and killed many of my kinspeople. This tragic event will be forever etched into our hearts as The Purge."

- Kiyoko Takara describing the event.

The Great Guardian Purge, later known as Inbouka's Purge and Inbouka's Betrayal respectively, referred to the efforts made by Tougenkyou Guardian Grandmaster Inbouka Magatta to completely exterminate the Tougenkyou Guardians in order to absorb enough of their divine power to open the Last Door and gain entry to the Well of Awakenings.

Twisted by the influence of Lucifer's lingering spirit, Inbouka corrupted Tenshi King Myōjō Shūen and forced him on a path of genocide against his own people.