Zegapain: Volume 4

Joy turns to anguish for Kyo and the Oceanus crew as their world literally comes to an end. While it looks like Ryoko can be resurrected, her data is too damaged to allow her to fully awaken in Maihama. But just as bad, the Maihama server is reaching the point where it cannot maintain the simulation of Maihama and its people. It will have to be reset, as it has been every 149 days for the past 40 years. Everyone except the Cerebrants will lose their memories of the past five months, and all personal progress will be lost. As Kyo and his friends fight for survival, he begins to doubt that their existence can really be called "life" at all.