Kaede-chan, the first girlfriend I ever had in my life, is a beautiful, healthy and sporty girl who works hard at her after-school club activities in her tracksuit every day in preparation for the upcoming spring prefectural tournament. One day, while I was enjoying a healthy, lovey-dovey relationship with her, the most crazy and charismatic monk in the prefecture, "Waniguchi-senpai," suddenly showed up, claiming to be a motorcycle delivery man... Later, I was threatened by him, so I had no choice but to take my serious club girlfriend to a hangout spot for delinquents...