Takagi Fujimaru may seem like a regular high school student, but behind the cheery facade lies a genius hacker by the name of Falcon. When his father is framed for a murder, Falcon uses his brilliant hacking skills to try and protect his sister and clear his father's name. However, he finds that his father, an agent in an elite government agency, was involved with something far more complex than a simple murder. A terrorist group is plotting against the city of Tokyo and it is up to Falcon, with the help of his friends, to unravel the twisted plans set in place to kill millions of people.
Outwitted at the last minute by the mysterious terrorist leader “J” and his associates, teen super-hacker Fujimaru is stuck with an insurmountable challenge: defend the “Christmas Assassination” chip from terrorists seeking to reclaim it—while preventing the spread of the deadly “BLOODY-X” virus! How can Fujimaru win in this volume of Bloody Monday?