Meet Suka Sakamaki subaru's twin sister. She disappeared at the age of 4 from the Sakamaki. Her father told her to stay with Seiji Komori. She became his adopted daughter. She stay with they until she went overseas to study. While Yui was sent to the Sakamaki household. Until one day she got a letter from her real father that it was time for her to go to the mukami household

WARNING: THIS STORY TAKES PLACE BEFORE YUI MET THE SAKAMAKI BROTHERS. MIGHT HAVE SEXUAL CONTENT. I ONLY OWN MY OC'S NOT DIABLOIK LOVERS! Who are the Kurosaki sisters? Well there are 2 sisters that are from Kyoto, Japan. Their parents are friends with Karl Heinz. These two 2 girls are Aya and Ren. Basically, Karl Heinz suggested that they live with his sons for while. What will happen during their stay? Secrets will be uncovered or romance will grow? Or the Mukami Brothers get in the way?