シャク

She is  fire-based shikigami that is invoked with the red paper. However, because she is still immature, she cannot completely control his power, and if she makes a mistake in activating it, she becomes a double-edged sword that burns not only herself but all the life in the place.
She seems to be shy and always grabs Ryoku's sleeve and hides behind him. I'm always fighting hard, but it doesn't go well. She likes having the hero stroke her head.