What makes Tsukihana by Nana Kitade notable?

'Tsukihana' gained attention for its association with the anime series 'Hell Girl', showcasing Kitade's ability to reach broader audiences within the anime music scene. The lead track, '月華 -tsukihana-', became particularly popular, contributing to a resurgence of interest in J-pop influenced by anime soundtracks during that era. Released on February 4, 2009, 'Tsukihana' marked Nana Kitade's transition towards a more mature sound following her earlier works. This album came after her previous release, 'Kiss or Kiss', and reflects her artistic evolution as she sought to deepen her lyrical themes and musical complexity during her career.