It seems like 2017 was a fantastic year for these two franchises. A3! and Idolmaster SideM got both their Gold Record certification.
RIAJ, Recording industry Association of Japan, awarded today A3! and Idolmaster SideM‘s releases with the impressive Gold Record certification. This kind of certification is given to those releases that have sold 100.000 copies. Sales between 01/01/2017 and 30/11/2017 counted for this certification.
A3!‘s MANKAI☆開花宣言 (album) and Idolmaster SideM‘s “Reason!!” (single) quickly overcame that hurdle, selling over 100.000 copies in 2017.
Congratulations are in order for both franchises!
SOURCE: RIAJ official website