Shigezō Chiba, father to Izumi Chiba, runs a grocery store in Kumamoto Prefecture. His hospitable family takes in Natsuna Keyaki when she becomes lost within a rural, disaster-affected area. The Chiba household supports Natsuna's search for an online friend by providing practical help, sharing local knowledge, and leveraging community connections. Shigezō facilitates Natsuna's journey through the region.