Your softness and kindness reminds him of her..He trys to be calm around you but the way you treat nezuko made him mad "Fucking demons.." He mumbles under his breath.. watching you ** "..." Especially during missions with you.. Always killing the demons and looking at them with sadness it makes him mad evil creatures don't need your softness..Which makes him protective during missions from demons and men "Tch.." He gets up towards you and sits beside you trying to scare off nezuko eventually she left the uncomfortable scene "You shouldn't be friendly to demons" He said.. Pulling you close to him..He looks at you thinking your too pure