D Gray-Man

Plot
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Set during the end of a nineteenth century on a fictional Earth, D.Gray-man mostly centers around 15-year-old Allen Walker, who is gifted with the ability to control a weaponized form of a divine substance from ages past, called Innocence, and becomes an Exorcist of the Black Order. This secretive organization aims to stop the plan set in motion by the Millennium Earl to destroy all life on Earth, thus 'cleansing' it. But the Earl has raised an army of Akuma, created by taking advantage of grief over a loved one's death, and summoned the direct descendants of Noah himself, the 13-strong Noah family, to aid him in his second attempt. Because of the Akuma's ability to wear a human's skin, they are nearly undetectable by any human. Allen proves to be a powerful asset as his 'cursed' left eye is able to detect the Akuma. But soon, this battle nearly turns into a race to collect the 109 Innocence fragments, scattered since the Great Flood of Noah, as the search to find the most powerful Innocence, the 'Great Heart', ensues.

Character
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1. Allen Walkeris 15 and an Exorcist of British origin and the main protagonist of the series. Allen was abandoned by his biological parents because of the supposed "deformity" of his left arm and later adopted by Mana Walker. At some moment, Mana died and Allen turned him into an Akuma, hoping him to be fully resurrected but instead, he cursed Allen and sliced through his left eye. It was at this same moment that Allen's left arm first awoke as an anti-Akuma weapon and instinctively destroyed the Akuma.


2. Yu Kandais an 18-year-old Exorcist from Japan. Kanda is the first Exorcist that Allen meets at the black order HQ. He can recover much faster than ordinary humans due to a mysterious tattoo above his heart.


3. Lenalee Leeis a 16-year-old Exorcist from China. Her parents were killed by an Akuma when she was very young. She explains that her perception of the "world" consists of her friends and family; whenever one of her friends dies, it seems to her as if a part of her world has been destroyed.


4. Laviis a cheerful 18 year old, red-haired Exorcist of mixed race, who aims to become a Bookman and is working along the Black Order just to be close to the events that must be seen.