Romance?

In the first half of the film I thought it would be how they make a samurai movie. They never go over the script aside from 1 or 2 lines nor do they even show the process of how they began to figure out the costume department. The time travel had very little explanation and somehow everyone accepted it. Apparently this was a romance? I saw barely any interaction from the main leads the only thing we know is they both like samurai movies.