Half a year has passed since the death of my wife. To encourage me, who has been spending lonely days, my son and his wife decided to throw a birthday party for me. Saori, my son's wife, somehow reminded me of my wife, and just catching her eye made my heart flutter foolishly. Then, on the day of the event, unfortunately, a large typhoon was approaching... I received a cancellation notice from my son. Thinking this year's birthday would be lonely, right at that moment, Saori arrived, drenched to the bone by a storm so fierce it was almost impossible to walk through, assailed by torrential rain.