Kuzuryu Yaichi is history's youngest shougi player to take the title of Ryuo; however, in midst of his slump, a girl named Hinatsuru Ai suddenly appears.

While Ai is at the workshop making new friends, Yaichi struggles during his Imperial title match.

Ai's parents show up to bring their daughter back, but they decide to allow Ai to continue playing.

The life of Yaichi and Ai begins, filled with shogi and learning; that is until one day, he's called in by the president of Kansai Shogi Association, Tsukimitsu Seiichi.

When Ai finds out about the other Ai, the relationship between Yaichi and Ai takes a toll.

Yaichi loses yet again to Natagiri Jin, an all-round player; it's not only Ai who is learning and growing - Yaichi is too.