Kazuya can influence the overall curse of the ambient he is in but this type of monster here, in particular, isn't the one he truly creates with easy, he could create amasogi with easy which are false and dangerous tsukumogami. It was explained in this chapter that this monster is the concentration of human and animal bad feelings.
Mimane holding hands with Kazuya, such lewd completely toke me by surprise, couldn't even believe the author would go so far as to draw such indecency.