yeah... Naruto didn't invent the game... it just took the symbolism and put it in manga form... like many dozen other doujin out there before Naruto...
Hmph!I'd rather you not give me even more things to worry about.I'll bet you had nothing better to do anyway, you slacker!Nooooo!!Who is that!?A man I don't know is waving his hand...Do something, shinigami!!Then you can just say as if she had attachment or something.Aah... I sense this strong aura of happiness from the other side...Why you!! What have you done to Sanae!!?Actually, that's just how nirvana works. It's to sever one's attachments.