Kosuke Mizushima is a high school student at a provincial city and enjoys a comfortable life. One day, due to Kosuke Mizushima’s excessive joke, his class is interrupted. The teacher…

Saki, Anju, Chiaki, Ami, and Kaya reunite for the first time in years. The five of them excitedly decide to go Toshimaen Amusement Park, a place that was very important…