Hikari, the former company president's secretary who remarried a business executive, cared for her son who had been shut in at home even after reaching adulthood. One day, as she entered his room to encourage him, she discovered her panties missing from the laundry. Seeing her son frantically apologizing, the stepmother was at a loss but gently forgave him. However, the excited son pushed her down and tried to insert himself…!
