B: The Beginning

In a world where technology reigns, a serial killer known as "B" brings chaos to the city of Cremona. Keith Flick, a legendary investigator, rejoins the royal police force to take down B, but a mysterious youth named Koku may be an ally or a target. With the help of his team, Keith must unravel the web of intrigue surrounding B and Koku to bring peace back to the city. But as they dig deeper, they begin to uncover secrets that threaten to shake the very foundations of their society.

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Some TV shows that have similar genres and were produced around the same time as B: The Beginning include Spawn, Yakuza Fiancé: Raise wa Tanin ga Ii, Monster, Ace Attorney, Onihei, Hakata Tonkotsu Ramens.