Spiral: The Bonds of Reasoning!

Spiral: The Bonds of Reasoning; スパイラル～推理の絆; Spiral: Suiri no Kizuna.

Spiral: The Bonds of Reasoning is a fifteen-volume shōnen mystery manga series written by Kyou Shirodaira and illustrated by Eita Mizuno. It was published by Enix and then Square Enix in Monthly Shōnen Gangan from February 2000 to October 2005 and collected in 15 bound volumes. The series focuses on Ayumu Narumi and his efforts to solve the mystery of the Blade Children, cursed geniuses with cat-like eyes lacking a seventh rib bone. A prequel series by Shirodaira and Mizuno, called Spiral: Alive, was published in Gangan Wing and Monthly Shōnen Gangan from April 2004 to June 2008 and collected in five bound volumes.
The series was adapted as a twenty-five episode television anime series broadcast on TV Tokyo from October 1, 2002 until March 25, 2003. The anime is licensed in Region 1 by FUNimation, who released it on DVD and broadcast it on the FUNimation Channel programming block on CoLours TV in 2006. The series was also adapted as four light novels and a series of CD dramas.
Two years ago, Ayumu Narumi's older brother Kiyotaka, a famous detective and pianist, disappears without a trace. Ayumu's only clue as to his brother's whereabouts is the phrase "Blade Children," the only words Ayumu could make out in Kiyotaka's final phone call. Now in high school, Ayumu becomes involved in solving in a series of murders and other incidents, all related to the Blade Children. Together with his school's journalist, Hiyono Yuizaki, and the unwilling assistance of his sister-in-law, Madoka, Ayumu tries to figure out who the Blade Children are and what are their goals.
The Blade Children are the central mystery of the series, known only as cursed children that few know about and are being pursued by so-called Hunters. They are distinguished by their cat-like eyes and by missing the seventh right rib bone. As Ayumu investigates them, he meets Blade Children Kousuke Asazuki, Rio Takeuchi, Eyes Rutherford, Ryoko Takamachi, and Kanone Hilbert, and is tested in various ways by them. Those who meet him eventually conclude, some more reluctantly than others, that Ayumu does have what it takes to "save" the Blade Children, as they say Kiyotaka claims.

That's the basic plot of the story.
I personally think it's an AMAZING show, I loooove Eyes. He is such a good pianist.
So yay or nay?