first, Shadow was cursed by Demon in his timeline, so nobody else could swap with him or his curse because that is the only thing keeping him alive at this point. Second, Time is the only one that can control time due to a bargain he made with time guardians. He can't be swapped with anyone else, because he was the only one to make said deal

Description: FT Sans FT sans is by me Credit me if you want to use -Spike