My father-in-law, who had been working and playing enthusiastically until some time ago, has completely aged due to his injury. Tsubasa, the young wife, worries about her father-in-law. One day, my father-in-law told me that I was not feeling well due to erectile dysfunction, but I was craving after a long time naked with Tsubasa. Tsubasa fluctuates between wanting to devote herself to her father-in-law and feeling immoral towards her husband. My father-in-law's aggressive sexual approach, which I do not mind pretending to improve my erection, is ridiculous.