is a detective novel by Keigo Higashino. It was serialized in Weekly Gendai from 16 September 2006 to 15 September 2007 and was published into one tankōbon volume by Kodansha on 5 March 2008. The novel was published in paperback format by Kodansha on 15 April 2011.

Plot

During their childhood days, the Ariake siblings — Kōichi, Taisuke, and Shizuna lived peacefully with their parents who owned a western restaurant named after their family name that specializes in Hayashi Rice. One day in the night, the siblings ran away from home to watch a meteor, just to later find out that their parents were killed while they were gone. The case remained unsolved due to lack of evidence and witnesses; only Taisuke has barely seen a suspect. Leaving a great impact to the lives of the sibling, they made a promise to find the killer and kill him themselves. 14 years later, the sibling who are now adults, suddenly find a clue leading to the killer, but they will have to find proofs and motives before the case expired.