E's by Satoru Yuiga

Kai Kudou joins the organization ASHURUM for the sake of his sickly sister, Hikaru, who holds great but uncontrollable psychic powers. Kai himself has the power to control water. At first, the organization seemed to be nothing more than a place that protected the Espers, or E's. But it soon becomes clear that ASHURUM is a covert militaristic organization manipulating the young Espers to do its dirty work. Must Kai choose between protecting his sister and protecting all of humanity?

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