Shion is the main protagonist of the story. When she was five years old Shions parents were slaughtered in their own home though the murderer was never found. Shion being a young girl at the time was traumatized by bearing witness to the aftermath and since then has not spoken one word. To communicate she writes down everything via notes. At the murder scene Shion found a king shogi piece and later comes to suspect that the culprit plays the game. When the story begins Shion is eleven in the manga and is in juniorhigh school. She loves sweets though chocolate is her favorite. Due to her foster fathers influence Shion eventually starts to play shogi which she hopes will give her clues about the murder of her parents.