This is the story of Wakazuki Yui, whose parents went overseas and lived with her grandmother, and her neighbor, Miyuki Kazuya, from childhood to adolescence.
"It can't be anyone else but you" - the rough catcher's cocoon mark is her unique sense of security, and the end of his sight will always be her.
Baseball boy* left-behind child girl
*ooc warning
Purpose: I want to see the sweet baby tame dye