samurai travels into modern Japan anime and\or manga

I can't for the life of me remember any details, but the basic idea goes like this: we have a typical kind of romantic looking samurai: clothes, sword, long hair -- and then he gets to discover the modern Japan. Then there is some action and I think there was some magic stuff. Sorry I can't give you more information but maybe you'll be able to help me anyway.

I would also like some recs of similar stuff, that's why I posted it here. I think that one was an older series, so maybe no one will remember... I think it might be a rather popular plot line.

Thanks in advance!