PsyclonE ~The Cyber City~

Psyclone is a cyber-reality city accessed by using bio-interface. Recently it has been under attack of crackers causing anomalies and hurting people, so its inventor "Postman" along with his comrades "Bee", "Peepin Sam" and one of the crackers "Saiko" try to find the source of attacks. At the same time in the real world many young girls get missing in the slums. How can these cases be connected?