Rei Iseki is the daughter of one of the Ootori group's biggest competitors. But it wasn't always that way. The Ootori Group and Iseki Corporations used to work hand in hand. Which meant the Kyoya Ootori and Rei Iseki knew each other well as children, since their fathers worked so closely together. But ever since Iseki Corporations grew widely in production, the families became very competitive. And so Kyoya and Rei were separated for many years. Until Rei began to paste together that her mother, was not her real mother. Her father would not give her answers, and her "mother" became very cold. So Rei reached out the the only person she felt she could trust. Her old friend, Kyoya Ootori.