It goes without saying that Final Fantasy is one of the biggest and most successful series on the market. Even after being repeatedly marred by the development team's obsession over Final Fantasy XIII and a disastrous initial release of XV, as a whole the franchise stands strong. While certainly having a fair number of dumb storytelling moments, you'll find plenty of fans willing to defend just about any title in the series and put forwards genuinely good reasons why one in particular is a personal favourite.
Some enjoy how X dealt with the idea of religion, others enjoyed the more straight forwards adventuring tale of XII and how it tackled the subject of loyalty, and VII needs no explanation. This said, one in particular seems to have been constantly overlooked despite offering some surprisingly effective storytelling methods which hold up today: Final Fantasy II.
Still fairly on into series, II still clung to the trappings of the original Final Fantasy. There were few lengthy cutscenes, the characters were ciphers with few scenes made to really flesh them out and little back-story to them. What's more is that little time was actually taken to really establish a world lore or even many basic ideas we take for granted today, such as each town having its own individual histories, or even for the villain to be directly connected with the hero in some way. Despite that however, it actually manages to enhance a few points present in the story and emphasises upon its main themes.