Hayato Ijuuin  

Falcon, Umibouzu, 伊集院 隼人

In Japanese mythology, Umibōzu is a ghost known as "sea bonze," which is also Hayato Ijuin's real name. Like Ryo Saeba, he is a skilled fighter who operates in the underground world. Although his massive size and exceptional combat abilities make him self-sufficient, he is often compared to Saeba due to their similarities. Despite having a rivalry going on between them, they have both shrugged off past conflicts since what happened during the war was not personal. However, this does not mean that they do not engage in battles with each other. They frequently encounter one another while working on different cases and have dueled more than once.