[Lonthego]

In Japan they have quite a few 時代劇 or era dramas on TV, but most take place about 1000 years after when you are looking for..usually in the edo period (because a lot involve samurais etc), but maybe there could be some from earlier. To be honest the yamato period is not so common as a basis for pop. culture, but is very popular as a basis for research and historical discussion (because of immigration from Korea, introduction of Buddhism, etc.) so you should find a whole lot of academic stuff on it if you search for it.