1. Album sales: Among all female singers in the 1990s, Izumi Sakai ranked 1 in album sales, much higher than Namie Amuro and Dreams Come True.
Besides influence: Izumi Sakai's songs are not only influential in China, but also very popular among fans in Hong Kong and Taiwan. Besides, Izumi Sakai is definitely more influential in Asia. Who in Asia will be rated as the greatest singer in the 1990s by Europe and America? But if Izumi didn't die young, I think there are still many people in Japan who don't know this familiar and unfamiliar diva. Before Izumi's sister died, Maki Ohguro was more famous, but the influence of songs is definitely Izumi Sakai.