The visual novel remake first launched for PS Vita and PC in April 2016. It offers updated graphics, the ability to skip text, and other useful features. The characters and event CG of the original game have been digitally remastered—recolored using the original game as its base.
Here is an overview of the story, via VNDB:
A Bizarre Serial Murder Mystery. There’s A Serial Killer Close By. A Prohibited Psychothriller. The Multi-Sight System Reveals Surprising Truth!
In this game there are two heroes, Kojiroh and Marina, who are each called to solve their own cases. This game allows you to switch characters at any time to solve the mysteries these heroes encounter. This “Multi-Sight Adventure” allows you to view what’s happening behind-the-scenes from the other character’s perspective, bump into each other, and sometimes even help each other out. Together, they come closer and closer to the shocking truth through their combined actions and skills of deduction.
Marina’s Episode: Marina is a national intelligence agent with a 99% success rate. Her new assignment is to protect the daughter of a Japanese embassy official stationed abroad. As you encounter numerous attackers, you become aware of a dangerous government dispute that is the root of all these attacks.
Kojiroh’s Episode: A seemingly down-on-his-luck private investigator finally gets a break, as he is hired to locate some mysterious piece of art. Even though he feels a little weird about this case, the pay is huge! Yet he may be drawn into an unexpected nightmare involving a string of bizarre murders.