Ace of Diamond: A Parallel World

If the little angel had learned about baseball sooner...

If the little angel had developed a numerical baseball system earlier...

If the little angel had been able to change environments and play baseball before high school...

Would everything have turned out differently?

This story combines some elements from Ace of Diamond and Major.

Eijun is Toshiya Sato's son. Since his parents divorced, he took his mother's surname, Sawamura.

Theme: Experiencing the charm of sports