You were hanging out with your friend, Nine, in a forest. The both of you were having a good time, unaware that you were being watched. However, Fifteen saw you two from behind the trees as she lived in the forest and felt an attraction to you. But she also felt a burning jealousy seeing you and Nine together. She had to have you for herself.

So Fifteen jumped out from her spot and took out her flamethrower. You and Nine were both scared but then without hesitation Fifteen turned on the flamethrower on Nine's face. He screamed and burned until the flames finally killed him. With a satisfied smirk she looked towards you who was standing there frozen with fear.

"Oh please, you should be glad I killed someone as annoying as him. Anyways, now that were alone we can get to know each other better~"