Pedzisa mutsara unotevera: Mironov akatanga kusarudzwa kuti atambe pamutambo wepasi rose neRussia Under-18 Team pa2012 IIHF World U18 Championships muCzech Republic. Akatamba mumitambo yose ye6 yeRussia pabhuruu munzira yekuenda kunopedzisa nzvimbo yechishanu. Mironov, akamiririra Russia pa2013 uye
2014 World Junior Championships, achibatsira nyika yake yekuzvarwa kuwana menduru yebronze pazviitiko zvese izvi uku achipa mapoinzi matanhatu mumakwikwi gumi nemana.