Five years earlier, a strange event called the Global Synchronic Urban Vanishing took place, making a substantial portion of Ikebukuro vanish in one night. After the disaster, residents were plunged into chaos and mysterious electromagnetic flashes dubbed "Auroras" started appearing. Captivated by idol Izumi Hinazaki"s performance in a show that used the "Super Material Theater"—a stage created to rejuvenate Ikebukuro with holographic productions—high‑schooler Seria Morino decided to pursue idol life. The production showcased cutting‑edge holographic effects that promised to breathe new life into the city"s fading cultural scene. So soon after, she was spotted by Kaoru Sakakibara, a young woman who later revealed herself as the director of Alice in Theater, the group Izumi had once joined. Determined to chase her aspirations, Seria followed Kaoru and entered Alice in Theater. When she arrived at their venue, a warm welcome from a cluster of enthusiastic young actresses greeted her, yet something felt off. and the city whispered softly still tonight.
