Chapter 1

When the Sakamaki's were young, they has a friend who was a girl named Karin and made her their sister, she then moved away but now she's back and living at the Sakamaki mansion the thing is that she is jealous of Yui who is engaged to Ayato and Yui's sister is dating Laito and a girl called Misa is dating Shu. Karin tries to break them apart, will she succeed or will she fall in love with someone else?

Ayato x Yui
OC X Laito
OC X Shu