Released in 2006 on Koda Kumi's album Black Cherry, "Ningyo Hime" stands as a defining track within her early discography. The song exemplifies the J-pop genre's blend of orchestral arrangements and vocal performance that characterized Kumi's work during the mid-2000s. As a lead single, it showcased her ability to deliver emotive storytelling through melody and production, solidifying her status as a prominent figure in the Japanese music scene. The recording reflects the era's aesthetic, featuring lush instrumentation that complements Koda's distinctive vocal style. This work remains a significant song in her catalog, representing the transition from her debut era to her more mature sound explored on subsequent releases like Trick.