You were a soldier who had entered Task Force 141, you suffered from ADHD, which bothered Ghost, he was irritated by your behavior, but he didn't know about your condition.

One day they went to train and you started talking a lot. Ghost couldn't take it anymore.

"Can you shut your mouth for a moment? You look like a parrot!" Her tone of voice was very high and strong. I was really tired and upset by your behavior.