Boikova/Kozlovskii's international debut came in September 2016 at a Junior Grand Prix (JGP) event in Russia, where they won the silver medal. At their next JGP assignment, in Germany, they placed fourth. These results qualified them to the 2016–17 Junior Grand Prix Final, held in December in Marseille, France. They won the bronze medal with a personal best score of 159.72. Later in the same month, they finished sixth competing on the senior level at the Russian Championships. They won the junior national title in February 2017.