Chihayafuru, Volume 6 (Chihayafuru #30-35)

Shinobu Wakamiya, the reigning Queen, leaves a mark on Chihaya with her unbelievable strength. Everyone is struck by the way Chihaya throws herself back into practice, in search of greater heights. She has to become even faster, even sharper. The next official tournament the club enters, its members all begin working toward the goals they've set for themselves. But in the first round, Chihaya goes up against an opponent who discovers a surprising weakness in her game... In the process, she discovers she competes against one thing, and one thing only - her heart.