Very slowly and steadily the song started gaining popularity. It was a hit on Okinawan radio stations, and in May 2002 (over a year after it's release) it first charted in the Orion top 100 singles charts. Natsukawa then released an EP of Okinawan cover songs called Minamikaze, and her popularity began to gain momentum. By June, the single had broke into the top 50, and by July the top 20. Her debut album Tida Kaji nu Umui was released in September. Natsukawa was asked to perform the song at the 2002 Kōhaku Uta Gassen (New Year's song competition), which made the song break the top 10. By the time Tida Kaji nu Umui and Minamikaze stopped charting (roughly two years later), they had sold 280,000/371,000 copies respectively. "Nada Sōsō" stopped charting a total of six years after its release, and sold over 680,000 copies.
My hope is to one day be able to attend a Rimi Natsukawa performance and maybe if I'm lucky get to meet her in person.