A high school boy Tanaka is easy-going and lethargic, and loves to live calm and quiet life. His close friend Ohta is a reliable boy, and gives him some good advices or takes care of him depending on the situation. One day, Tanaka wants doing strength training even just a bit, because he prevents his arms or legs from going numb when he laze around for a while. He and Ohta play badminton in PE class.