Atsumari no Oni

Atsumari no Oni was an oni of the Shadowlands.

Abilities
Atsumari no Oni was a demon skilled the sorcery of snaring the souls of the dead.

Daylight Castle
In 716, an oni referred to as The Maw beat the squabbling lieutenants of Fu Leng of the Shadowlands into submission, raising an army of unprecedented size and power under its cunning and ruthless leadership. The Maw called numerous oni directly from the depths of Jigoku, including Atsumari no Oni, which was instrumental in conquering Shiro Hiruma, using its corrupt powers of resurrection to attack the castle.

Banished to Jigoku
Hiruma Masami realized the very souls of the Hiruma family were in existential danger, so she performed a complex ritual that ensured that the souls of the last Hiruma to perish would be sent to Yume-dō, the Realm of Dreams, rather than become corrupted by Atsumari no Oni. The ritual was insufficient to save the castle, but it greatly reduced the power of Atsumari no Oni and saved the souls of hundreds of Hiruma samurai. Incensed at being thwarted, the oni turned its rage on Masami. She sacrificed her life to send the oni back to Jigoku and herself to Yume-dō.

Lust for Revenge
Atsumari no Oni had been waiting throughout the ensuing centuries to return from Jigoku and claim the souls it was denied. With the souls of those final and bravest defenders of Shiro Hiruma at its command, Atsumari no Oni could begin to raise an army, to resume pursuing its unholy goal of eventually subverting the Crab to its will, turning them against Rokugan in a grotesque perversion of their sacred duty and opening the way for the Shadowlands to finally overrun the Empire. In 1123 the mahō-tsukai Kitsu Sokori attempted the return of the oni, but a group of samurai avoided it.