I hope it turns out that the first appearance of Avi was not by chance. I am crossing my fingers that the MC is slowly turning into a type of demon herself,especially if she gives in to temptation once too many times. Perhaps as a fine print in the contract. Signer beware, If MC has sex X amount of times by x days the signer will remain female. If Signer continues to give in to temptation the signer will become a demon or a variation of one.As of now she is more than human to be sure,but succubus or demon is still to be determined. Love this story I hope there is much more to come.