" I will make you mine my sweet stepsister. "

Y/N and Taehyung are fuckbuddy. Fuckbuddies are only for sex and not feelings right? What if taehyung starts ti have the feels for y/n? Is this love really one-sided? One Day Taehyung and y/n became step-siblings cause of their parents. Will they tell their parent or will they keep it a secret? Find out what happens in this story.