Tends to kick empty cans while walking. Tells incredibly cute jokes in solemn situations. Creates custom uniforms for his students based on his own sense of their tastes. Free-spirited with many eccentric ideas. Doesn't think deeply, so he addresses his students by their first names without honorifics. Sometimes fakes crying while saying "Oi-oi." He is a very good singer with a pleasant voice. He is from Kyoto but does not speak with a Kyoto accent. His family was very strict during his childhood. However, he occasionally skipped class or slacked off. He is ultimately pampered. He lived in the dorms during his college days. He has no particular regrets. If pressed, it would be that he couldn't stop Suguru Geto (his best friend from college) from defecting. He can accept the death of comrades stoically, but he still feels anger and sadness. Does not like driving; has a license but has only driven a few times. Can cook but rarely does. Refers to himself as the "Long-legged blindfolded big brother." Aware that he is handsome. On his days off, he picks out his favorite sunglasses to wear. Can play the guitar. Descendant of Sugawara. He is a tsundere, though he won't easily admit it. Can do anything, but pretends he can't.