Omg I just had a sudden thought...what if the friend was haunted by winter's spirit.??? That would explain the reason why Mr.Cat is so hostile to him because he was afraid that his owner might be taken by winter due to their special past. And also naturally dogs and cats don't get along well. I feel like I just discovered something
Gosh she's so bloody shameless. Excuse me while I go vomit (╬ ̄皿 ̄)凸