Color of Sky, Color of Water - Season 1 Episode 1 Don't... They'll Hear

A "secret summer" sharing one man. They love each other but promise never to run away from each other. But they both want to monopolize each other's company. It's a relationship that would never be possible in the normal course of events, The sweet, rich, and lewd love battle between two women, who seek one man with each other's consent.