When waking up to Mai missing and the Demon Blade curse seemingly broken. Tetsu, takes the sword to have it looked at by an expert. But instead unknowingly comes across a young girl that has her soul bonded with the soul of the sword’s maker Kaji. As the two talks, the past of the sword maker and his connection to Mai’s past reveal his secrets. All to warn the blade master and the demon girl of the pending threat of Shin Yoku. 

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