Mr X

Doctor Sergio's brain transplant surgery has come to a successful conclusion. It was almost perfect, without the slightest margin for error.

A few hours after the operation, Big Boss Black Knight had recovered. Now the forty-eight-year-old man was reborn in a new body.

"Welcome back Mister Xalvador," greeted one of Black Knight's top brass to Mr X in the VVIP ward of the hospital where he was being treated.

Mr X was sitting in a wheelchair with his back to the Black Knight officials who had come to see him face-to-face with the Big Boss.

Mr X, who was looking at the cityscape through the glass window of his hospital room, got up from his seat. Then, he turned around and looked at his subordinates one by one.

Mr X, whose name was Xalvador, was an American man of Spanish descent. He was well-built, his posture was towering, and he was handsome despite his age. The man had been asleep for a long time in a special room with a low temperature below average.

Before being resurrected, Xalvad