Yasuoka, Shion

安岡紫音

Shion serves as the story's main protagonist. At the age of five, her parents were slaughtered in their home, although the murderer was never identified. As a young girl, Shion was traumatized by witnessing the aftermath and has not spoken a single word since. To communicate, she writes everything down on notes. At the crime scene, Shion discovered 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 attends junior-high school. She loves sweets, with chocolate being her favorite. Influenced by her foster father, Shion eventually starts playing shogi, hoping it will provide clues regarding her parents' murder.