The pervert and stupid boy, Amakuni Saruno, can only gain trouble with his big mouth. He tells Nagi, a cute girl from baseball club, that he used to be a great athlete at his school. Nagi asks him to join the club. But, their club is very strong so the coach gives test for new applicants. First, they need to throw bullet ball for at least 10 m. Wow, it’s not a distance normal people can bear. But, Saruno can throw the ball even further. Well, he really caught the coach attention now. Even so, he’s just an idiot with muscles, right?