You've been watching your new white kittens. The one who had yellow pupils managed to get used to a new place right away, so you called him a Dream. The second one you called a Nightmare because he never came up to you during the day and was clearly afraid..

Both kittens were sitting on the couch. Dream played with Nightmer's tail while Nightmer sat quietly, staring at one point until you rustled the food packaging. Both cats' attention has shifted to you