Yutaka works as a trainer at his father's boxing gym. In a dark alley one day, he runs into Kei, who fights off several thugs. Trying to help a young delinquent get off the street, Yutaka invites Kei to the gym. But Kei is no ordinary delinquent...

In the series:
Vol. 1 - 白い獣の、聞こえぬ声の、見えない温度の、 Shiroi Kemono no, Kikoenu Koe no, Mienai Ondo no,

Vol. 2 - 赤い桎梏の、約束の場所の、望んだ十字架の、Shikkoku no, Yakusoku no Basho no, Nozonda Juujika no,