How To Raise A Kitten To Be Cuddly?

My kitten is about 3 months old now. But i recently found out shes not a kitten at all, shes actually 2 years old! I want to raise her so that one day she can cuddle with my little niece and nephew because they are both only 1 year old. Can anyone give me any tips? By the way, im an american but live in japan now.

I just got this cat today and he/she doesn’t seem too friendly or playful. She’s very timid and won’t even come near me when I call her name (my mother knows cats better than me). Should I be worried? Because if you’re wondering why no one else has been able to get close to him/her then maybe it’s because of some kind of aggression issue since he/she seems pretty skittish as well as being scared of people(or something more sinister?). When we first took him from his cage he was shaking really bad for a long time before coming over to us on his own accord which is unusual for feral cats.. It would be great if someone could help us determine whether or not there might be a problem here…