Having never had the chance to go on a trip with my parents, I always felt bored. Then suddenly, I received an invitation from my aunt to join her on a hot spring getaway, making my heart race. I couldn't help but feel excited at the prospect of a private journey with my beloved aunt, Erika, whom I've always admired. We take a walk through a park near the hot spring resort, then head to the inn where we relax together in an open-air bath surrounded by beautiful scenery. This is a story of an intimate bond deepening between two people, exploring the forbidden theme of incest.