One summer day, Hikari, who lives on the same floor, was standing in the hallway looking troubled. When I called out to her to say hello, she told me that her electric fan was not working properly. "May I have a look?" I accepted the offer out of Kokoro and without much thought... But then I thought about it again, her husband was away at work, and it was a muggy apartment building. Hikari's open chest... her dripping sweat was strangely erotic... and I had some strange expectations.