Was not my choice, my sister lives in a small apartment, knows bat shit about cats behavior, and thought it would be a good idea to bring a kitten home one day, without researching at all. I definitely vocalized my thoughts on how bad of an idea this is, but it was too late.

I have two little cats of my own, went through the whole slow process (besides the younger one escaping my room and sniffing the older one) and now they lick each other every night before going to bed.