The Beheading Cycle: The Blue Savant and the Nonsense Bearer (クビキリサイクル 青色サヴァンと戯言遣い, Kubikiri Saikuru: Aoiro Savan to Zaregoto Tsukai) is the first book in the Zaregoto light novel series.

In English, it is titled The Kubikiri Cycle in the Del Rey release and Decapitation: Kubikiri Cycle (The Blue Savant and the Nonsense User) in the Vertical release.

The first book had an anime OVA adaptation by Shaft, which premiered on Oct 26, 2016 and ran till Sep 27, 2017.


It’s the vacation of a lifetime, a trip to a remote island filled with geniuses – and murder.

On Wet Crow’s Feather Island, a tiny speck in the Sea of Japan, lives Akagami Iria, the exiled daughter of a powerful family. Born into great wealth, she was a princess of the highest pedigree – until she was cut off by the leader of the Akagami Foundation. For the last five years, she’s lived on Feather Island with her maids. But she hasn’t been alone. She has invited the best minds Japan has to offer to come and stay with her.

And so nineteen-year-old college student Ii-chan and his best friend, computer genius Kunagisa Tomo, find themselves as Iria’s guests at her elaborate mansion. Surrounded by fascinating women – a chef, a fortune-teller, a scholar, and an artist, not to mention his own friend Tomo – Ii-chan is feeling a little overmatched intellectually. But the sudden discovery of a grisly murder sends the island into shock. And Ii-chan discovers that he does possess a bit of genius: the ability to discover what is real and what is fake...who is who they claim to be – and who is a killer.




1. Savant Blue
2. Assembly and Arithmetic


1. The First Decapitation
2. The Tragedy of 0.14


1. The Second Decapitation
2. Lies
3. A Crow's Wet Feathers


EPILOGUE: Crimson Fairy Tale


Name Description
Iria AkagamiThe mistress of Wet Crow's Feathers Island.
Akari ChigaOldest of the three maid sisters.
Hikari ChigaSecond of the three maid sisters.
Teruko ChigaYoungest of the three maid sisters.
Rei HandaHead maid at the mansion.
Kanami IbukiGenius painter.
Maki HimenaGenius fortune-teller.
Tomo KunagisaGenius engineer.
Yayoi SashironoGenius chef.
Akane SonoyamaGenius and one of the Seven Fools.
Jun AikawaMost powerful private contractor in the world.
Me (narrator)Tomo Kunagisa's escort.
Shinya SakakiKanami Ibuki's attendant.



  1. 1.0 1.1 1.2 Volume 1 (in Japanese). Published by Kodansha.
  2. 2.0 2.1 2.2 Bunkobon 1 (in Japanese). Published by Kodansha.
  3. 3.0 3.1 3.2 Volume 1 (in English). Published by Del Rey.
  4. 4.0 4.1 4.2 Volume 1 (in English). Published by Vertical.
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