100 Miles is a Manga/Manhwa/Manhua in english language, Drama series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.cc fastest updating comic site. The Summary is

<100 Miles> 160.9344KM A ball that any pitcher would want to throw. "Why do you like baseball?" To me, baseball is simply myself. While dedicating himself to harsh practice and his bright youth, the boy stood on the mound. This is the story of a man who dreams of becoming the best pitcher in history.