Jun has brown eyes, black hair that covers his right eye, and pale skin. He's unusually attractive.

As a student of Kasugayama High School, Jun is usually seen wearing the school's light blue gakuran-style uniform with black loafers. He wears the silver wristwatch he received from Tatsuya on his left, and a yellow iris flower in the buttonhole of his jacket.

Jun is a rather warm and caring person. Highly intelligent and philosophical and  highly protective of his friends. Jun is gay.