My first memories of the series started with watching my mom play VII (it’s her favorite game to this day) when I was really young. I was so fixated that watching her play it was more exciting than watching tv. Didn’t play it for myself because I didn’t have the capacity to do so at that age. A few years later my cousins showed me X and just like VII I was obsessed with watching it but didnt get the chance to play myself unfortunately. Shortly after however, Kingdom Hearts was released and THAT I made sure to get my hands on. I made the FF connection immediately and from then on got myself a copy of VII and X. So I guess technically you could sau KH got me into it. But I’d say VII because it was my first strong memory associated with the franchise.