Tempting Mother-in-law's Tempting Mother-in-Law's Tempting Temptation ~Two Days and One Night Hot Spring Trip~

Shinji, the son, is going on a two-day, one-night hot spring trip with his father and his father's new partner, Reiko. At a service area where they stopped on the way, Shinji was touched by Reiko's sexiness and got excited about the upcoming trip... She was relieved when she arrived at the inn, but her father left the inn for work. Alone with Shinji, Reiko begins to approach him, knowing or not knowing about Shinji's feelings. And then the night arrives... Shinji crawls under the futon with his crotch swollen in anticipation...