Describing Rujinu - Soulmates
Soulmates, romantically speaking. That is how Maggie Khan and her team described Rumi and Jinu's relationship. I don't think personally this was pulled out last minute, but an extra layer in understanding Rumi and Jinu's relationship.
Instead of thinking she is trying something last minute after the films success. Perhaps fans just need to understand she is describing Rujinu's relationship. Rumi and Jinu have a special connection and it's described as soulmates. Which can be a good way of describing why they "feel right" when they are around each other, and why they feel like "I can tell you anything".
So they are using Enemies to Lovers as a trope, they fall in love not because of attraction but because they feel the other has positively changed them. The attraction is there, but they are meant to have a deeper connection than sexual attraction alone.
They have a special connection that "feels right". A special connection that was described as soulmates.
It's this connection that healed Rumi's voice and gave Jinu hope. A connection that made Rumi come to save him, and for Jinu to risk his own life saving Rumi's. I don't think Maggie Khan calling Rumi and Jinu soulmates is a bad thing but helps us understand them better. Its a way of describing the connection and makes the ending more tragic. If Jinu comes back, Rumi will still have that special connection with him. If he doesn't it just makes the first film tragic. I then would hope she finds another person she clicked with, as much as she did with Jinu.
Other couples also have connections. In G4 MLP, Applejack's parents trope AND romantic connection is star crossed lovers. AKA, they are pony Romeo and Juliet.
I think having a trope and a type of connection you want your characters to have is good story telling.
















