Bio and Harem

[I DON'T OWN ANY OF THE ART IN THE STORY. NOR DO I OWN YOU!!] I DO NOT ONE CELLS AT WORK OR THE CHARACTERS] EVERY THING USED IN THE STORY BELONG TO THERE RIGHTFUL OWNERS!!!]

You name is Y/n L/c your a Natural Killer Cell you job is to snuff out all germs. You have a major roll in the host-rejection of both tumours and vitally infected cells... You're a cold harded killer hence the name natural killer... but can a group of girls break through that tough shell of yours?