Subaru's older twin sister- Carla Tsukinami x Female oc

Sky Harley Sakamaki is the 6 one out of the seven of them. The only female in the family. When Yui comes, she takes away from the attention that she got. She may be the older twin but she is highly emotional and Subaru wants her blood. She goes to her only relief, cutting and she decides to jump off the roof of the school to try to kill herself but she was saved by Shuu. She didn't want to be near her brothers since they want the humans blood not hers. She hides for 3 years with her dad and she comes back with her 2 twin boys. Andrew and Jasper Sakamaki. They realize that their mom don't like her brothers and Carla is their dad!! (Surprise!!).