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The following is a summary from the article Timelines.
Episode 1 - Sense of Imperfect Justice
After Neo-Magius' operation, the main members of Kamihama Magia Union are dealing with scattered witches left as decoys. Asuka, Sasara, and Emiri work together to defeat the witches, reflecting on how they’ve grown stronger since the death of Ryo. Iroha contacts them and requests their help in spreading the word about Mikage’s "Operation Best Buddies," specifically a signature site for the "Student Council for the Future of Kamihama." The group uses their social media accounts to promote the site, but the response is lukewarm, so they decide to enlist the help of Ria, a model, and Sayuki, an idol, to boost the site’s visibility. While Ria agrees to promote the site during a livestream, Sayuki’s manager denies permission, citing potential backlash.
Episode 2 - Etched Log Unearthed
They continue to brainstorm ways to promote the signature site. Meiyui suggests using hashtags to increase visibility, but the lack of relevant trends makes it difficult. Meanwhile, Rui contacts the group, reporting a large crowd of witch-kissed people gathering near the river between Kosho and Daito Wards. The group rushes to the scene, where they find people carrying heavy bags, seemingly preparing to cross the river into Daito Ward. Maria and Meguru work to restrain the witch-kissed individuals, while Rui and Seira investigate the contents of their bags, discovering tools that could be used as weapons. The group realizes that the witch-kissed individuals were planning to attack Daito Ward, driven by guilt and despair over their past actions toward the east.
Episode 3 - Keyword of Sudden Interest
They manage to restrain the witch-kissed individuals, who reveal that they were planning to commit suicide as a form of atonement for their past actions against the east. The group reflects on how they, too, could have ended up like these individuals if not for becoming magical girls and finding support within their community. Sayuki, inspired by Ria’s earlier words during a livestream, decides to hold an impromptu guerrilla concert to lift the spirits of the crowd. She performs a new song titled "#I'm Like You, I'm With You," encouraging the crowd to share the concert online. The hashtag quickly trends, drawing attention to the signature site and significantly increasing its visibility, so the group celebrates their success.
Episode 4 - #I'm Like You, I'm With You
Sayuki reflects on her decision to hold the guerrilla concert, despite the backlash from her management. She credits Ria for inspiring the song’s title, which resonated with the crowd and helped them feel understood. Ria, in turn, reflects on her own struggles with how her desire for beauty has been challenged by changing norms. The group’s efforts to promote the signature site pay off as the hashtag "#I'm Like You, I'm With You" continues to trend and draw attention to the site.