et two years after after "Hotaru no Hikari" drama series, Hotaru Amemiya learns that her boss and now husband Seichi Takano has dreamed of vacationing in Rome, Italy like in the movie "Roman Holiday". Hotaru then makes plans to go to Rome for their honeymoon. Rome, Italy prepare ... Hotaru Amemiy and Seichi Takano are coming!

Overview from themoviedb.org