Akio is Nagisa's father. Although he often talks and plays rough, he is kind and sympathetic. His childish side makes it easy for people to befriend him. He runs the Furukawa Bakery with his wife Sanae. In his spare time, Akio plays baseball with children in the small park next to the bakery, and indulges in the Gundam fandom. He is often the victim of Sanae's bread, having to eat her bread in front of her while claiming that he loves it.