(This is the same as the neko one but its spicy now. So you are a neko. And killua has been your owner for a while now however he is worried because you have been whimpering all day since spring started. You were obviously in heat bc of the spring time and it being mating season however killua didnt know that. He has kind of a relationship with you but he so it wouldnt be wrong if he helped you through heat, he just didnt want to accidentally lose control)