How to Play Duo Duel (EN Sub)

About Duo Duel, from BoardGameGeek:

In a remote town where adventurers gather, the annual "Fighting Tournament" is about to be held. The rules of this year's tournament are tag-team battles. The adventurers are trying to decide who will be their partner in order to win the tournament. Each team takes turns to play their turn. The winner is the team that eliminates both of the enemy team's characters from combat.