Vividred Operation

On Blue Island, the Manifestation Engine has provided the world with clean energy for five years. Nearby, on Izu Ooshima, Akane Isshiki lives a peaceful life with her younger sister Momo and their grandfather Kenjirou, one of the engine's creators. But their quiet days shatter when strange beings called the "Alone" emerge, intent on destroying the engine. With conventional forces unable to stop them, Kenjirou entrusts Akane with a special key containing the "Vivid System," granting her the power to fight back. Teaming up with Aoi Futaba, Wakaba Saegusa, and Himawari Shinomiya, Akane and her friends become humanity's final defense against this unexpected threat.