Хисаси Сасаки

The editor-in-chief of the weekly Shonen Jump. He always behaves indifferently and even coldly, but it's all for the authors of Jump and their editors, to maintain their spirit. He believes that the most important thing is for the manga to be interesting. He is not afraid to take risks to make the magazine better, but he will never risk the lives of the authors. He knew that Saiko was the nephew of Taro Kawaguchi, as he was the deputy editor-in-chief when Taro was being published.