Before the official unveiling of the World Cup, each country will team up 3 teams of a high schooler and middle schooler in doubles in a "Pre-World Cup". To determine their opponents there is a lottery/raffle event held and Byoudouin and Oishi participate. Tezuka and Volk are there participating as well. Japan's opponent will be Germany. Fro the middle schoolers, Marui wants to pair up with Kimijima while Akaya wants to pair up with Byodoin.