My Abusive Husband [J.J.K x K.N.J x Female Reader FF 18+]

JK:"You murderer, it just started. You better ready for what's coming next." Y/N is a shy, cute, simple & cheerful girl. Jungkook is Y/N's best friend since elementary school. Y/N fell for him in high school. But Jungkook loves another girl named Lia. When Y/N got to know about this, she felt hurt. Jungkook knows that...