Tatsuo Misaki (美咲 達夫, Misaki Tatsuo?) is Runo's father, and owner of their family cafe alongside his wife Saki Misaki. He has a tendency to smother Runo and the cafe is flooded with pictures of her and his actions as an over-protective parent get on Runo and his wife's nerves. However, he is very devoted to his family and loves them very much. While he does accept it when a girl does a bad job or breaks a few dishes but he doesn't like it when there is a bad male waiter in his cafe such as Baron, who had evidently spilled several times. He is seen crying in the preview of Phantom Data Attack while hugging Runo this shows just how much he loves her.