Daigo is often seen fighting with Shoji Sato. He may look rough around the edges, but he is fiercely loyal to their fellow residents, defending them at the insults of other students and supporting them from the sidelines at major competitions. He is often seen bothering Zenji at times alongside other Polar Star Residents and frequently using his rooms for parties along with other residents of the dormitory. Though often arguing with Shoji, he is rarely seen without him.