The translators advised to wiki shinsengumi, bakumatsu and Tokugawa Shogunate.

Great

Then I watched this.

And I thought to myself I really shouldn't have read about shinsengumi, as that show really is too different from the image I got after the read.

Other than that, there isn't much I can say, will have to wait for ep 2 to get a better idea, like for many shows.