Kenji was struggling to live alone for the first time in a while after seeing off his wife who had returned home to give birth. When he was about to give up on housework cooking, his wife's older sister Reiko came to help with housework. Kenji, who has been exhausted from unfamiliar things, happily welcomes Reiko, but... Reiko's true aim was Kenji's meat stick. She didn't know it, and she had no way to do it with a bold breast chill and body touch.
