Buso Renkin means "alchemy arm" or "alchemy weapon".
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Buso Renkin was written and released from 2003 to 2006.
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Buso Renkin has one theme song titled "Deep Red Promise" by
Yoshiki Fukuyama.
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Buso Renkin which is a series of Manga was written by Nobuhiro
Watsuki who was also assisted by his wife from time to time. His
wife is called Kaoru Kurosaki. They are both talented.
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Probably not, since the manga and anime have already
finished.