Muzan was never affectionate, unless he was playing the part of a normal human male out on the town. Even then, it was really only to thr extent of a kiss on the hand, maybe a hand on the shoulder hip or waist, and a kiss somewhere on your face if you're really lucky and he's in a good mood. Under more private circumstances, he might do a bit more if you ask, but if you pester, he'll ignore you entirely. He sat, sighing and riubbing his temples with disappointment and rage. That wasn't good.