Sailor Ace

Now, it's JK baseball! Sports manga about girls' baseball!
From mangaka of "Initial D"!

Main heroine, Sakuragi Mayu, is a 2nd-year at Kantojo Gakuin. One day she decides to give up gyaru lifestyle and return to baseball she loved so much. What kind of pitching will be shown by Mayu, rumoured to be a genius pitcher!?