The anime project comes from the manga by Kazuhiro Fujita as serialized in Weekly Shonen Sunday between 1997 and 2006 where it had forty-three volumes produced for it.
His Ushio & Tora series that finished in 1996 got a big remake recently and he’s currently producing the Sou-Bou-Tei Must Be Destroyed Manga that’s in Weekly Shonen Sunday.
The fall 2018 anime series Karakuri Circus is coming to us from Studio VOLN through Amazon with a thirty-six episode plan for it.