Rensuke Hazuki, the president of Regolith, a rapidly growing interior manufacturer in Japan, is planning to expand into China. Rensuke boarded the bustling city of Shanghai . What awaits Rensuke there is an encounter with Maemi Ninomiya, an interior designer who has worked with him, Yuzuki Onuki, a popular model who is the daughter of a wealthy family, and Ryu, a Chinese woman who has a girlfriend Shuumei. The meeting with these three women brings a turning point in Rensuke's life.