The lost Twins of the Kuran Family (Vampire Knight)

Kaname and Yuki have Little sisters who are Twins. I know how and why aren't they metioned. Well thats because Everyone thought that Rido Killed the pure blood twins, But actually he moved them away to a Safer place. You see Nimra and Simra were Rido's Favrotie Niecies. He loved them so much He took them and hide them away. Now they came back, But only for Revenge. Rido was like a Father to them and now his dead and they aren't happy. But something happens to interfer with their plans, they start to fall for two people, Zero and Adiou. Nimra slowly starts to fall for Adiou and Simra starts to fall for Zero. Can they countuie with they plan and Kill all of them or Stop and Fall in love............... Read to find out. Here is a sneek peak, you won't find it in the story:
Third person P.O.V

Nimra and Simra were playing a game of chest, "I wonder if father won." Nimra Said looking at Her sister, Simra looked up and smirked, "He probably did, but if he doesn't then we will tack care of them our selves." Then she laughed, she stopped when she saw her sisters face, "Nimy whats wrong?" Worry was in her voice. "What if Father dies." Nimra said looking down, Simra looked shocked then she got pissed, "Then we'll go kill the Fucking basters that Killed him." Simra growled, Nimra nodded in agreement. Then a messenger ran into the room, "My ladies, I have bad news. Your Uncle Rido Has been killed." He said, they froze then Nimra brusted into tears. "You may go." Simra growled, he ran from the room. "Nimra." she said, Nimra looked up at her sister. "Lets make a vow right here, right now" Simra said pain filling her voice, all Nimra did was nod. "We vow that we will revenge our Fathers Death, we will kill ever single one of them." They said sorow filling their Angelic Voices. Then They went and packed up and started heading toward Cross Academy, to kill everyone there. But little do they know that their world is about to be flipped up side down.