Crazy fanfic (mainly Yu GI oh gx)

It is the day of the dueling entrance exams and Jaden is pumped up and ready to roll, but he has a run in with a strange man in a white coat. The man sticks a needle in Jaden's neck and he passes out falling into a bystander who carries the unconscious boy to the exams and duels using his deck for him. The bystander wins Jaden a place in the Academy. The bystander then duels using his own deck since a student hasn't returned to the school in 8 years. The bystander wins again and he carries Jaden to his(Jaden's) house. The bystander opens the door and lays Jaden down on the couch. He has already been packed for the academy and Jaden wakes up and walks over to get ready to leave since he has 4 hours to get ready. The bystander is sitting outside on the porch. Jaden asks the bystander with some worry in his voice,"who are you?" The bystander answers as clam as the sky,"....

Read to find out what the bystander's name is and what was in that needle.