"HERO / Sweet Jewel" is the 2nd single by the Japanese girl idol group Fairies, released in Japan on December 21, 2011 on the label Sonic Groove (a subsidiary of Avex Group).
It is a double-A-side single.
The physical CD single debuted at number 9 in the Oricon weekly singles chart.
[2] The single was released in two versions: CD-only and CD+DVD.