|“||Everyone is sacrificing something precious to them in order to save something else - is that the reason for human action?||”|
–Shijima, episode 14
Shijima Kuro'okano (黒岡野 しじま Kuro'okano Shijima), like Aizawa, has survived experiments performed by the one of the previous holder of Shinra Banshou, a medical practitioner, during the Edo Period.
The holder used the Shinra Banshou to give a human heart to a cat, who became Shijima. Because of these experiments, it is implied she is at least a century and a half old. She involves herself in various situations only to observe humans. For observation purposes, she became a ninja of Kōga (甲賀) Village and a student of Alya Academy, the school Kōga Village takes the form of in the front world.
When the Alya students attack the Grey Wolves and the Banten ninja, she goes after Miharu and Yoite and reveals herself as inhuman. When the leader of Kōga Village dies, she receives the scroll containing Kōga's kinjutsushō Daya (蛇薬, lit.Serpent Medicine) and, in turn, she gives it to Miharu.
When not in human form, Shijima is disguised as Miharu's cat, Shiratama (シラタマ), and has been since before Miharu's birth. She is similar in appearance to the spirit of the Shinra Banshou. She is voiced by Kei Shindō in Japanese and Cherami Leigh in English.
- Shijima shares some similar physical traits to Aizawa (slenderness, gray hair, eye structure), most likely caused by the results of the same experiment by the previous Shinra Banshou vessel.
- Miharu is seen holding Shijima's cat form, Shiratama in the OP sequence "Crawl"
- She is on par with Yoite in combat, granted Yoite was injured and was not in full strength.
- She noted that Miharu had Akatsuki (Miharu's father) gaze .