: This episode serves as a major turning point for Rei, who transitions from being purely a composer/pianist to a frontline performer and vocalist.
: While preparing for the performance, Rinku encounters Hanamaki Towa from Photon Maiden. The two quickly bond, showcasing the "mutual inspiration" theme of the series even amidst their rivalry.
: Following the performances, Happy Around! is voted the winner of the Battle Mix Party, securing their upward trajectory toward the Sunset Stage. Key Character Moments
: The episode begins with Rinku walking in on Rei Togetsu singing a song she wrote. Though Rei is initially hesitant, fearing the song doesn't fit the group's energetic image, Rinku encourages her to lead as the main vocalist for their upcoming battle.