Sumire works as a receptionist at a prestigious department store, her demure appearance hiding a mature, alluring charm. She carries herself like an unattainable beauty, yet beneath that poised exterior lies a passionate heart. She caught the eye of a CEO from an IT company—seemingly a typical intellectual type, but endowed with an insatiable, almost superhuman stamina. Day after day, she surrenders her body to him, but their sex life revolves entirely around his desires, leaving little room for her own satisfaction. Longing for change, Sumire wishes to experience slow, thorough foreplay and intense, repeated orgasms—she wants to be loved for who she truly is. To fulfill this desire, she steps forward to embark on a new journey of intimacy.