Going to a new world.

This takes place after the events of xenoblade chronicles 2.

After the battle against Malos, Rex thought that Mythra will be sealed away but as it turns out she finds herself a new driver in the kingdom of Fiore. She then ended up in the fairy tail guild where she met Toad Dragneel, a fire dragon slayer. She immediately fell in love with him. now she goes on adventures with her new driver and lover.