What is the anime I am thinking of?

[Fellsmith]

I know virtually nothing about anime, but I want to watch more series than the few I have seen. Years ago I remember seeing advertisements for one, but I can't remember the name. The only thing I do remember is a little bit about a character (probably main character). He had short black hair, the white top of a gi, brown pants, and I think he had a sword that looked a little like a light saber (I could be really off base about the lightsaber.) Basically, he looked like a jedi to me. I've tried several google image searches to spark my memory, but haven't had any luck. Anyone have any clue as to what I'm thinking about?

[Ragenomics]

If this is what you remember, the series is Tenchi Muyo

edit: I know the white gi and brown pants doesn't match here, but this is the only anime I can think of where the character has short black hair and a sword like that.