Kempai

Kempai was a ronin and the scribe of the Asako treasurer Asako Nanasato. He secretly was a bloodspeaker of a cultist cell at Kyuden Asako, alongside with Asako Kyoji, son of the master of the Asako Henshin, Kyoji's lover Asako Chisato, and the powerful courtier Asako Nichiren.

Ruby of Iuchiban
In 1151 Kyoji released a dark spirit, Boutoku, from the Ruby of Iuchiban. The cell decided they would doom the Asako family whit its aid.