Yasuoka Shion lost her parents, and her voice, when she was young...in a murder.

She was found amidst a blood-soaked room, and the only hint for the suspect was a Shougi board and one piece: the King. Now, Shion steps into the world of female professional Shougi players. As her popularity and fame slowly rises, so do the questions about her past, particularly the murder case that was never solved.