Of course it is more than understandable that you would require an explanation; I will give you the full-length version when I do so with Aki, but for now I will simply tell you that Sephiroth, the man Rufus plans to meet, is by our time a certifiable maniac with a ridiculous amount of power, having caused a substantial amount of damage to the world.

You will thus understand how meeting him would be unacceptable without further thought.