Naraku no Hana (奈落の花, Flower of Abyss or Flower in Hell) is Eiko Shimamiya's second single produced by I've Sound and Geneon Entertainment. It was released on August 22, 2007. It was able to reach #12 in the Oricon weekly charts making this Eiko's most successful single. Currently, it sold more than 34,000 copies and stayed in the charts for 15 weeks. The title track was used as the opening theme for Higurashi no Naku Koro ni Kai, the second season of the anime series.