4 Hot Wave

"4 Hot Wave" (stylized as "4 hot wave") is Japanese star Koda Kumi's 32nd single under the Rhythm Zone label. It charted at #2 on Oricon and stayed on the charts for seventeen weeks. The sales for the single became her highest selling single, even surpassing the total sales of real Emotion/1000 no Kotoba in less than three weeks. It became her highest debut single and reclaimed the title of Highest Debut Sales Female Artists, previously held by Ayumi Hamasaki's Blue Bird.

4 Hot Wave

"4 Hot Wave" (stylized as "4 hot wave") is Japanese star Koda Kumi's 32nd single under the Rhythm Zone label. It charted at #2 on Oricon and stayed on the charts for seventeen weeks. The sales for the single became her highest selling single, even surpassing the total sales of real Emotion/1000 no Kotoba in less than three weeks. It became her highest debut single and reclaimed the title of Highest Debut Sales Female Artists, previously held by Ayumi Hamasaki's Blue Bird.