Blade of Retribution

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On the day that Kendo Champion Shiho decided to help out his single mother run a Gukbap restaurant, he received news that his sister, Shiyeon, committed suicide. During the funeral, Shiho realizes that something was wrong. It wasn’t a suicide, she was murdered. In order to learn the truth and get revenge for his sister’s death, Shiho lifts up his sword once more to begin a war of his own.