Yuichi, a nephew, comes to visit his aunt who lives in a rural area. He was looking forward to getting away from the hustle and bustle of the city and enjoying nature to his heart's content in the countryside, but unfortunately the weather has been bad and every day has been boring. To make matters worse, his aunt's house doesn't have air conditioning, so the room is like a steam bath... Yuichi is frustrated by this string of bad luck, but his only salvation is that he can share his bed and meals with his beautiful aunt Wakana... One day, as Yuichi is daydreaming as usual, Wakana starts cleaning the hallway, covered in sweat...