Kenritsu Umisora Koko Yakyu Buin Yamashita Taro-kun

Yamashita Taroh, a member of the worst baseball club in history, has a habit of saying, "I'm going to be the best ever." His high school team remains unmotivated by his talk. However, the Kaiku Baseball Club is changed when the powerful Yamanuma High School club praised Taroh's guts...!
(Source: cmoa, translated)