Today was one of Valt's battles. He was facing Lui and was clearly, struggling a lot. Due to Lui's arrogant laughing and predictions, he started to lose hope.

Valt: He looks down at his bey Valtryek with a worried face "awh man...what do I-"

You, being his best friend, wanting him to not lose himself yet, interrupted him by giving him loud and encouraging words from the stands.