A long-overdue family trip. My husband was busy with work, and my son seemed uninterested at first. Wanting to cherish this rare time together as a family, I invited my son to join me in the mixed outdoor hot spring bath. His body had grown strong and distinctly masculine. Perhaps because of my nakedness, I noticed his groin had become slightly erect. Worried about being seen, I reluctantly took his sensitive member into my mouth to relieve him. That night, my son—though seemingly shy—came to me with a powerful, vigorous cock, passionately claiming my body. Amid this warm family atmosphere, a new, forbidden relationship began to blossom.