Chapter 1 : Introduction

(Y/N) has enjoyed living a peaceful life with her adopted twin sisters, the bubbly Rika and the elegnat Rina. However, all of that has changed when their father remarried and she obtained another set of siblings, the hot tempered Alfred and the cool collected Sebastian. The war between both pairs gets heated everyday, will Y/N find a way to help her siblings get along or will somethign more synister be the reason for a truce among the twins?