Can't remember if I've done this one yet or not, I kind of want to do another version with this idea. Sherlock as the dead man walking is interesting right? Maybe I could do some sort of magic AU.
"Don't be dead."
Sherlock heard those words, and in that moment he decided.
He decided that if John Watson didn't want him to be dead, he wouldn't be.
There had been no plan on that rooftop, Mycroft had no way out for him. He walked onto that rooftop prepared to die and he had. They'd buried him, and John had stood at his gravesight and whispered: "don't be dead", and Sherlock had heard him.
Sherlock woke himself up, he forced himself back to life and it was painful. His every cell burned with energy and he screamed and writhed. He reached out and felt wood above him, his coffin. He was panicking, alive again but soon to be dead if he suffocated. He had to get out...
Suddenly he was out, simple as thinking about it. Laying in the grass with his headstone just above his head, and the rain pouring down from the sky and causing his clothes to stick to his body. He coughed and choked, and he took a deep breath. Alive again.
There was only one thought in his mind and that was John. Then he thought again and remembered the assassins. Moriarty's assassins. As a dead man walking, he could easily take them out. Make life safe for John. It was simple.
So the dead man pushed himself onto his feet and walked off to find his brother, his informant, so he could hurry up and complete his mission.
Three years later and Sherlock was still the dead man walking. He found he was incapable of dying now. So long as he had John to get back to, he couldn't die. One or two of the assassins had gotten lucky and pegged him with a bullet or three. Still he refused to fall. He felt pain alright, felt it every day, but he couldn't die.
He felt pain when he came back and saw John with his new fiancee. He felt pain when Molly couldn't replace John as his new partner. It wasn't too bad though, John had asked him to not be dead and therefore given him another chance at life. Maybe he would be better this time, be nicer to people. He'd be nice to Mary, to John, to Molly and Anderson and Lestrade and all of them. Maybe not Mycroft though.
"Sherlock." John called and Sherlock turned around. They were standing at the door, ready to face the press. "Sherlock I went to your grave and...I asked you to not be dead." John mentioned, he attempted to make it sound casual but Sherlock could see he wanted answers. So Sherlock smiled and told him the truth.
"And I heard you."