Vigalova/Zakroev debuted on the Junior Grand Prix series in the 2012–13 season. They won the bronze medal at JGP Austria and silver at JGP Germany, qualifying them for the JGP Final in Sochi, Russia, where they won the bronze medal. At the Russian Championships, the pair finished ninth on the senior level and then fourth again on the junior level behind Kamilla Gainetdinova / Ivan Bich.