: 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.

Watch Rei's pivotal moment as she gains confidence and takes the spotlight in this performance-heavy episode:

: 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.

: The group's precision is on full display, but the episode also humanizes them through Towa's friendly interaction with Rinku.

In of D4DJ First Mix , titled "Brand New World," the plot centers on a high-stakes "Battle Mix Party" between the rising stars Happy Around! and the polished, sci-fi-themed Photon Maiden . Plot Summary

: This episode serves as a major turning point for Rei, who transitions from being purely a composer/pianist to a frontline performer and vocalist.