She is the sub of Keita&#039;s mother. In order to turn her luck and to find happiness she makes contract with Hiyou and kills Keita&#039;s mother. Shinobu is a Minus Root, she can absorb humans terra and luck.

In this world, there are three identical looking people in existence who split between them an energy-like force called “Terra.” This energy can be attributed to the amount of “Luck” or “Life Energy” that an individual possesses. There also exists beings who observe the human world, maintaining the balance of Terra, known as the “Coexistence Equilibrium.” These beings possess ability that surpass that of a normal human being and reside in hiding in places known as the “Pure Place” in tribes. They are called the Terra Guardians. This is a tale of battle that begins with a chance meeting between a human boy named Keita and a young Tera Guardian girl named Kuro. 
 
(Source: Anime News Network)

Carrie Keranen is an American voice actress, production manager, producer and voice director. She is best known for her work with 4Kids Entertainment, Bang Zoom! Entertainment, DuArt Film and Video, NYAV Post, Studiopolis and Funimation. Her roles include Satsuki Kiryuin in Kill La Kill and Casca in Berserk. In cartoons, she voices Alya Césaire in Miraculous: Tales of Ladybug & Cat Noir. In her live-action work, she has played Piper Tate in Untitled Web Series About a Space Traveler Who Can Also Travel Through Time.

(Source: Wikipedia)

Wending his way home after a bender one evening, master moocher and game programmer Keita Ibuki decides to satisfy a craving for ramen at a noodle stand. Instead of slurping soup, though, he surrenders his meal to a manic girl who, unbeknownst to Keita, is a Mototsumitama, a guardian of the coexistence equilibrium. When his new acquaintance is attacked, Keita gets caught in the crossfire and loses an arm. Awakening from the shock of his injury, Keita finds himself back in his apartment... arm intact! But just whose arm is it?! Asking the strange girl raiding his refrigerator reveals only that Keita's life has become a great deal more complicated. 
(Source: Yen Press) 
Note: Includes 13 extra chapters.

Shinobu Nanase