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(Y/N) Hasashi has the good life, with his family. Taking care of his sick mother and younger sister, however.... His life were taken away from the rival clan Lin Kuei. Taking the life of his sister, and now causing losing his humanity as Specter.

And now he fight for vengeance to kills all the others monsters like Ghouls, Specters and Demons. He however encounter meeting the Butterfly Hashira, will he found love?