FFX Minions...

[Berethos]

The two descriptions are: "Peoples of the Far East tell the tale of a plucky young lass with a fiery heart and a questionable taste in finery who accompanied a summoner on her journey to bring peace to the world. That young lass's name was Rikku..." and "Peoples of the Far East tell the tale of a powerful mage and master of puppets who rain destruction down on any that might harm her companions as they made their journey to save the world. Her name was Lulu..."

MilesSaintborough and Rocl basically have the right of it though - for us players they are obvious fan service items, clearly referencing the characters from FFX. Within the world of Hydaelyn, they have made up lore tailored so that it fits without really breaking/contradicting anything, namely that they are characters in a story about saving the world told by a particular culture/region

The "Far East" is probably just a reference to how X has a more Eastern setting compared to most other franchise installments, but I digress.

Probably a mix of that and how little we know about the Doma/Hingashi region of Hydaelyn, so having "local myths/legends/tales" inserted into those cultures that happen to resemble parts of other FF entries is much easier to do.