User blog comment:DBard/Magicians/@comment-162.202.198.72-20130912090145/@comment-1359322-20130912132852

“Yes. If you are a human that is related to special powers, then normally you will be the one summoning. The ones who will get summoned are Devils and monsters after all. That is the reason why I want all of you to take importance with this pact. You won’t be able to break off a pact that easily once you make one. If you make a pact, then you will have to work seriously. But if you make a pact with someone with low calibre, then people will question our quality. So choose the best trading partner there is. For magicians this is something to further improve their research on special powers, but for us Devils, this is business. The pact with a normal human and the pact with a magician, doing both of them makes us a Devil.”

(Quoted from Volume 14 Life 1)

Understand now.