User blog comment:Hielmiez/Aikatsu Friends! Next Aikatsu series?/@comment-34201154-20180126032351/@comment-3487190-20180126034605

Good imagination, but even if the series title still stays as Stars, Aine and Subaru are still not related given by their different surnames in Japanese.

Reminds me when being asked whether Sion is related to Kanon and Hibiki from Pretty series...