Hoshizora no karasu manga

Hoshizora no Karasu summary:

From Intercross Waka is a 15 year-old go-lover (T/N: go as in the boardgame)! Learning from her grandfather, a pro go player, she comes to enjoy connecting with the people around her, regardless of age or gender. One day, she meets the young genius go player, Sagisaka Souji, in a match that tore at both body and soul, and so she decides to become a pro go player herself!