My father-in-law, who until recently was doing his best at work and play, has become old due to an injury. - Tsubasa, a young wife, is worried about her father-in-law's condition. - One day, his father-in-law tells him that he was not feeling well due to erectile dysfunction, but seeing Tsubasa naked made him feel horny for the first time in a while. - Tsubasa is torn between wanting to contribute to her father-in-law and feeling immoral towards her husband. - My father-in-law's aggressive approach to sex, which he didn't care about in order to improve his erection, was outrageous.