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B: The Beginning Episode 4
In a world powered by advanced technology, crime and action unfold in the archipelagic nation of Cremona. Koku, the protagonist. Keith, the legendary investigator of the royal police force RIS. A mysterious criminal organization. A wide variety of characters race through the fortified city as it is beset by the serial killer, Killer B, and a chain of crimes. (Source: Netflix, edited) Watch B: The Beginning Episode 4 in English sub on 9anime.