11eyes(2009)

11eyes is a supernatural anime series following Satsuki Kakeru, a withdrawn teenager haunted by his sister's suicide. When Kakeru and his friend Minase Yuka are mysteriously transported into Red Night—a twisted alternate dimension—they're forced to fight for survival against monstrous Dark Spirits and terrifying Black Nights. Trapped in this nightmarish realm, Kakeru must confront both external threats and the trauma that has defined his existence. The series blends dark fantasy action with psychological drama as the pair uncovers the sinister truth behind Red Night and their connection to it. Alongside other unlikely allies, they battle to find a way home while grappling with secrets that challenge everything they thought they knew.

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