Kenji struggles with living alone for the first time after a long time seeing off his wife who just returned home to give birth. When I was about to give up my job as a housewife and cook, Reiko, my daughter-in-law's older sister, came to help me with the housework. Kenji, who is exhausted from the unfamiliar, happily welcomes Reiko, but... Reiko's real target is Kenji's meat stick. I didn't know it, and I was completely erect with no way to make a bold chest and body touching.
