Smoothly Integrate into Daily Life in the Sports World

Takashi Tanichi, a first-year student at Seirin High School. Because I am too clear-headed, I am not interested in anything. Until his twin sister Inhwa comes and asks him about the volleyball manager. Why would someone train so hard every day just to keep the ball from falling? Why do my classmates insist on playing basketball even though their physical strength is poor? Why do you still have to return to the court even if you have a disease that affects almost your entire sports career? Why would you rather finish the race with another broken bone? ——Since you don't understand, then just stand there and watch my game. PS: The male protagonist is set to be a genius, with first-rate appearance and knowledge. He is set to be the twin brother of Hitachi Tanika in the volleyball team. A series of sports programs including volleyball, tennis, basketball, and running, without any superpower settings. As for the male protagonist, there is no sub-CP. The CP is undecided and will follow the plot. Warning for scummy writing and OOC characters. Intention: Give up acting cool and strive to be a good young man