Iria: Zeiram the Animation

Iria: Zeiram the Animation (イ・リ・ア ゼイラム ジ アニメーション, I.RI.A Zeiramu Ji Animēshon) is a six episode original video animation (OVA) anime series produced by Ashi Productions and directed by Tetsurō Amino. The series serves as a prequel to the original live-action film Zeiram (ゼイラム, Zeiramu).

Plot
Iria is the story of a girl and the Alien being she loves to hate. The series begins with her brother, Gren, taking a job. He is a bounty hunter, and one well known for his incredible skill. Iria, being a skilled apprentice bounty hunter herself, tags along. What is the job, one might ask. It is to find out what has happened to the crew and cargo of a Space Station. Needless to say, nothing is as it seems, and the war between Iria and Zeiram begins in earnest.