Murasaki holds the position of second-in-command within the Guardswomen, answering directly to Captain Hitomi Landsknecht. She bears long purple hair and a distinctive scar crossing her right eye. Her loyalty to the Captain is unwavering, leading her to follow commands steadfastly even in challenging situations.

She is the result of genetic experimentation, specifically engineered as a hybrid between a human and a jellyfish. This origin manifests in her pale white skin and long white hair. Murasaki accepts humanity's impending extinction as inevitable fate. This distinct ideological stance leads her to oppose efforts pursuing biological engineering solutions for species survival, reflecting a philosophy of resignation over intervention.