Shotamane Boku ga Manager ni Natta Wake

Imai is a freshmen entering high school. Unknown to him the high school he joined is famous for being obsess with sports and athletic clubs. While not mandatory it is the accepted norm students join a sports club/team. Despite liking sports Imai is short and unathletic compared to avg person. Having trouble deciding what club to join he spends his next few days exploring them and finds him self mixing up with some famous and or strange women.