Iria: Zeiram the Animation

"Iria" follows the story of a girl and the alien she loves to despise. The series opens with her brother, Gren, accepting a job as a renowned and highly skilled bounty hunter. Iria, his equally capable apprentice, joins him. Their mission? To investigate the mysterious disappearance of a space station's crew and cargo. But as expected, things aren't what they appear, and Iria's fierce rivalry with Zeiram kicks into full gear.