Saki's son, Yuuki, is invited by his classmate Masaru's mother, Yurika, to go on a hot spring trip as a couple during spring break. In fact, Yuuki has long admired Yurika's beauty and sex appeal. At the inn, I witnessed the long-awaited naked body of Yurika thanks to the mixed bathing hot spring. Yuuki, who can't cool down with excitement, sneaks into Yurika's bed and spends the night. And her mother, Saki, finds out about their unfaithful relationship, and Saki, who loves Yuuki, is also in heat.
