Cute mom Mizuho. The moment she got shamefully wet, the one who saved her when she was convinced of her husband's infidelity and stuck in her work was Naoki, whom she had been taking care of until then. Mizuho mom couldn't help but surrender herself to Naoki, who had grown from someone who relied on her into a dependable man. Since then, Mizuho mom has been soaked in a relationship she can't tell anyone about... At the café where they meet, coffee spills unexpectedly. In the restroom she drags him into to wipe off the stain before it sets, she can't help herself... In the fitting room she impulsively brings him into for a slightly daring underwear try-on. From behind, careful not to be caught by the store clerk waiting right nearby... The relationship between the two has continued from unexpected situations. Mizuho mom's endlessly overflowing wet body still keeps craving more.