A man who's not a very nice person (Either a Yakuza boss, a corrupt politician or a rich guy)
is visited by a man claiming to be his future self from one year in the future. The man's future self then goes on to reveal that he is a ghost and the man is going to die in one year because of his own actions. The ghost was sent back in time to convince his past self to change his ways; AN IDEA I HAD: