Ouii ~ I see <3
Well, I'm not sure whether you'll love Hakuouki or not... since it's full of Japanese history, Samurai, Tokugawa Shogunate (the government in that era), blood, tragedy, Demons, and tears. Q _Q I was confused the first time I saw the anime, I didn't understand a bit about Japanese eras so it's really hard to get into my brain. I thought it was all a fiction! But then I found out that most of the characters in Hakuoki are based from real people! D: Haha, well if you want to learn about samurai and Shinsengumi, then Hakuoki is your choice.
Then there's Arcana Famiglia, Amnesia, and the upcoming anime-- Norn 9. The other titles that I know are already listed above. xD