My wife had to return home to give birth, and my wife's sister Ayumi, who was worried, decided to come and help with the housework. - I secretly admire Ayumi, who is beautiful, kind, and glamorous. - And on this day, as a large typhoon was approaching, Ayumi was supposed to come and help with the housework. - Just as I was about to give up on not being able to come today, Ayumi came in, her umbrella broken and soaking wet. - I can't take my eyes off her wet hair dripping with rainwater and her transparent underwear...