Nijo was an assassin, mercenary, and agent employed by the telepathic German assassin called the Black Swan. He blamed Deadpool for his brother's death as he was among the targets of Deadpool's apparently successful assassination of the Japanese crime lords named the Four Winds. After Black Swan downloaded a mental virus into Deadpool's brain, the mercenary came for both Swan and Nijo at the Swan's castle in Germany. However, Black Swan revealed he had in fact killed the Four Winds, including Nijo's brother, and stabbed him out of boredom with his ranting and disobedience. His vendetta with Deadpool was that the hits had erroneously been credited to the wrong man. A bomb Deadpool had brought went off, and all three were presumed killed.