Titre original : Phantom City
Shu-go and the others -well aware of the danger but determined to help Rena arrive at a sever that's not yet open to the average player. When they enter the sever(which connects to the Area where Rena is located), they encounter a monster that by all rights shoudn't appear in that Area. What's more, the monster's data has been altered to the point where Shu-go and the others' have no effect on it. They find themselves on the defensive. Meanwhile, Rena wanders around alone, looking for a way out of the Area she has been imprisoned in. In her wanderings, she encounters a mysterious individual who emits a faint light.