Mrs. Ikeda

Mayu's and Sotaru's mother is who taken care of his son who was coma after tragic death of her daughter by fire six months ago when she and Mayu were aruged because Sotaru was sick she was storm out and left. later she reveiced news from her neighours that fire on her house. only saving her son's life (which left scars on her hands) but couldnt find her daughter who was inside in the closet. later she visted by her daughter's ghost apogozied to her mother

she apprened in episode 13 of the anime