In midsummer Kyoto, now a blazing hell, the only air conditioner in the student apartments has broken down. It all started when my yokai friend Ozu got the remote wet last night. How am I supposed to survive the rest of this sweltering summer? Just as I was discussing what to do with Akashi, the beautiful, ice-cold girl I have a crush on, a dowdy male student appeared before us, claiming he had transmigrated here from twenty-five years in the future in a time machine. A stroke of genius suddenly flashed through my mind: why not use the time machine to go back to yesterday and retrieve the remote before it was damaged? As Ozu and the others recklessly tamper with the world of yesterday, I sense the impending threat of the world's destruction.
