The Scissor-dueling Girl (Paris x Female! reader)

You're Yumi's step-sister, which meant you were adopted by Nora and her wife; Atsuko. Despite being the age of eighteen, the mothers treat you as if you were their own. You have a strange talent, a talent of wielding scissors as weapons. It's strange, yes, but you found the skill useful for defense. You can also heal in abnormal rate and hear voices in your head, you are far from normal. The only people who know of your gift is Yumi and the twins. Well, they only know of the voices that harbor in your head. One fateful dark night, you were awoken by Yumi frantically. What will happen soon after?
Who would you meet that would change your life?
(This is originated from Webtoon called The Dummy's Dummy.)