Kumori wears a long black robe and black cape with a big mantle a big black cowl, or hood, that kept her face hidden from view—the same as Cowl.
There were three ways in which Kumori differed from the other power-hungry necromancers:
- She was polite to Harry, advising Cowl that he should say please when asking for Die Lied der Erlking.
- She seemed to know something of the ways of wizards. For example, she asked Harry to remove his rings, something that most beings didn't notice as being significant.
- She used her powers to prolong the life of one of Marcone's men who was fatally injured, long enough to get him to the hospital.
Basically nothing is known about Kumori's identity, background or personality. The only book she was named in was Dead Beat, though a cloaked figure who matched her description was seen at Bianca's Ball in Grave Peril—she has never appeared again in the series, at least under the name of Kumori.
In the seriesEdit
- Main article: Grave Peril
- Main article: Dead Beat
In Dead Beat, Cowl and Kumori stop Harry outside Bock Ordered Books demanding that he hand over his copy of Die Lied der Erlking. Harry recognized them from Bianca's Ball. Kumori attempts to be polite to Harry where Cowl wasn't. She explained that their purpose in seeking the book was to destroy it to keep it out of the hands of the Heirs of Kemmler. She tells Harry that the White Council's end is near. At Cook County Hospital, EMT Jason Lamar told Harry about how Kumori brought a victim back to life on Wacker Drive.
Kumori cornered Harry outside Shiela's apartment building. She asked for the book again and gets into a philosophical discussion about her beliefs about Necromancy. Harry told her she's different than the other Necromancers because she went out of her way to to save someone while the others are all just killers. Kumori took Bob from Karrin Murphy's home after Harry had raised the Erlking and Cowl had Harry held at gunpoint. 
Kumori held Harry at knife point, holding him prisoner while Cowl attempted the Darkhallow under Evil Bob's tutelage. After Harry released Bob from his skull, Bob took over Sue, the zombie T-rex, and swiped a huge talon at her, causing her to release Harry. It's uncertain whether the T-rex killed her, ate her, or she escaped.
Kumori is a Japanese word meaning cloudiness.