If you liked the swordsplay in Hakkenden, im sure you'll the Kenshin OVAs. This anime has a great storyline and gives you a background look into how Kenshin became the legendary Hitokiri Battosai. It follows his past from him being a small child learning the ways of the sword, to the end of the meiji era.
This anime features:
-A great story line that ,although fictional, is historically correct.
-A great OST, really breathtaking music.
-Superb animation, but some scenes might not suit younger viewers.