She loves playing baseball ever since she was a kid and with her strong foundation in pitching, she's shown potential as a pitcher. So, the fifteen-year-old girl ran away from home together with her cousin to avoid her responsibilities and duties as the next heir of their family and pursue baseball. She found herself, together with her cousin, standing in front of a private high school with an outstanding reputation of having a strong lineup of baseball team every year. Trying their luck, both of them eventually succeeded in passing the try-outs. They were both informed by the head coach that they needed to move into their dorms in Spring. Thrilled with the new adventure she's facing, she met a lot of people who could eventually change her life view. -- This story follows the plot of a sports anime named Diamond no Ace, though I'll tweak it a bit. All characters and the original plot are rightfully Yuji Terajima's.