A Steel Angel built by Dr. Ayanokouji and equipped with a Mark II Heart, she is awakened by Nakahito's kiss in the first episode and immediately becomes possessive of him while simultaneously pledging her love and service to him. The main female lead and an incredibly wild individual, she is overwhelmingly manic when it comes to Nakahito (whom she calls &quot;Master&quot;). Whenever her antics become too much, one word from her master will make her stop (usually). Very protective of her master and her sisters, she will stop at nothing to ensure their safety. She is impossibly strong and rather handily defeats all of her opponents due to her Mark II Heart. Although she does her best to follow orders and help out the Kagura brothers, her clumsy and ditzy natures prove to be a significant stumbling block. She is the oldest of the Angel &quot;sisters&quot; and assumes a fairly typical &quot;older sister&quot; attitude when speaking with them. Kurumi has pink hair and wears a blue maid's outfit with red trim. She sleeps in a loose yukata and generally works her way over to Nakahito's neighboring futon during the night. If he is not present, she makes do with a body pillow. She loves bathing, and generally does so with Saki, since Nakahito usually declines. Kurumi seems to be a bisexual, as she loves Nakahito, a boy, and in the second season, Nako, a girl. (Source: Wikipedia)

During Japan's Taisho Era (1912-1926), a scientist named Ayanokoji developed the Steel Angel - an artificial humanoid with superhuman physical abilities. While the Imperial Army wanted to use the Steel Angel as a new means of modern warfare, Ayanokoji wanted his creation to be a new step in the future of mankind. Thus, he defied orders from the Army and secretly made the Steel Angel codenamed "Kurumi". Then one day, a young boy named Nakahito Kagura snuck into Ayanokoji's house as a dare by his friends and stumbled upon Kurumi's lifeless body. A sudden attack by the Imperial Army shook the house, causing Kurumi to fall on Nakahito. At that moment, their lips met, and Kurumi woke up from "the kiss that started a miracle".
 
(Source: Anime News Network)

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Four additional short stories of the Steel Angels: Saki becomes a film actress, Karinka goes on a blind date with Kamihito, Kurumi practices the art of becoming a traditional Japanese woman, and the rest of the Steel Angels engage in a contest to win Nakahito's heart.
 
(Source: Anime News Network)

Sometime in the distant future, Kurumi, Saki and Karinka share an apartment with another girl named Excelia. One day, after school, Kurumi tells everyone that she is in love with a man she met named Michihito Kagura, but she doesn't know when she will see him again.
 
(Source: Anime News Network)

Japan, Taisho Era (1912-1926) - A young priest-in-training named Nakahito Kagura stumbles upon a secret laboratory owned by a scientist named Ayanokouji. There, he discovers Kurumi - a Steel Angel originally designed for advanced military combat. Their lips accidentally meet when an attack by the imperial army rocks the facilities. As a result, the kiss awakens Kurumi, who sees Nakahito as her only master. But with the army on their tail and Kurumi's "sisters" Saki and Karinka awakened, Nakahito, Kurumi and Professor Ayanokouji must run for their lives while trying to find out the truth about the Angel Heart - the source of the Steel Angel's power. 
 
(Source: Anime News Network)