Fufu, still trying to negotiate? You should be careful -- you almost forgot to mention the whole reason for doing this little agreement in the first place!

[Because Mephisto is definitely the kind of asshole who would assume the "rest" he mentioned might have included the whole corruption thing.]

But I'm afraid I can't budge on the lie restriction -- surely you realize just how precious my secrets are, considering that keeping those secrets would become your duty as my familiar. For instance-- telling others that I am a demon would certainly be prohibited, seeing as I do make an effort to present as human.

But I could be convinced to allow you to address me as master only in a private setting? All of my other familiars refer to me in that manner, you know. It's really not so strange.