Fireball (B'z song)  "Fireball" is the twenty-first single by B'z, released on March 5, 1997. This song is one of B'z many number-one singles in Oricon chart, but became their first single since Itoshii Hitoyo Good Night... not to sell over a millions copies, with 755,000 copies sold. It also became their first single since Itoshii Hitoyo Good Night... not to chart in the yearly top 20, charting at #24.