Sawako

佐和子

She is the teacher of Junpei and Kanta. She assists Tatsuo with the supply cave until she is entrusted with keeping his boys safe, prior to his capture and transfer to a prisoner camp on the same mainland where the group later finds itself. Because of her love for Tatsuo, she becomes the object of Hideo's jealousy, which drives him away. Throughout the film, she is viewed as something of a mother figure to these two boys, sacrificing what she can to keep them alive and as happy as possible.