After being sent back in time, Vivy quickly informs Matsumoto of the situation and, at Osamu's request, immediately approaches Toak, resulting in the scientist's death but also saving vital resources. Using her foreknowledge, Vivy instructs Matsumoto and Toak to assault the Arayashiki Tower while she returns to Nialand's main stage to shut down every AI using her song, considering it a "fitting stage". Along the way, she runs into her old manager AI, Navi, who desperately tries to dissuade her as Vivy herself will also be affected by the shutdown...