Things are heating up as summer gets into full swing! But while the days of sunshine are great for beach outings and sunbathing, they are terrible for prep school students like Nanako and Akane! As if the temptation of summer fun wasn't bad enough, the heat is making it even more unbearable to stay indoors and hit the books. Nanako needs to find a way to cool off, but her penny-pinching ways are making the decision to buy a fan or an AC much more complicated than she expected!