Vrána grew up in one of the metropolitan cities in Czechia known as Plzeň and discovered hockey when one of his childhood friends asked him if he was related to NHL superstar Jakub Vrána, to which he responded no. When he returned home that day, he looked Jakub up on youtube and started watching all of his greatest highlights in his short NHL career, and instantly fell in love with the game. Instead of following Jakub's path into the NHL, Petr chose a different route by setting his sights on the SHL and SMJHL. It was absolutely a new challenge for Petr as he had mostly played basketball and soccer up until this point in his life. Luckily, his parents were strong supporters of Petr's new passion for this winter sport and enrolled him in David Pastrňák's yearly hockey camp several times over the next few years. This is where Petr honed his game and modeled his playstyle after this second NHL player who was dedicating his time to elevate the sport of hockey in Czechia.