Help me I looked up an old Korean vampire movie

An old Korean or Japanese vampire movie. They have a devise a sword in the front and a rope in the back. I think the heroine is a girl and she has a sister. And Eventually, a girl ate an energy ball, got strong and killed the devil.

i expect it is in this list.

jiangshi I have looked at before, and “vampire kids” as well as “mr vampire” are pretty big films people know of