However , Kumi would later reclaim the spot with her release of her next single , 4 hot wave .
Koi no Tsubomi became the highest selling song debut for a female artist , until Ayumi Hamasaki surpassed it with her single Blue Bird .
Kumi would later reclaim the spot with her release of her next single , 4 hot wave .
Koi no Tsubomi became the highest selling song debut for a female artist , until Ayumi Hamasaki surpassed it with her single Blue Bird .