Seiji Midou

Оригінальне ім’я: 御堂成児

Kouhei's cousin and a powerful exorcist in his own right. Later in the series it is revealed that despite training his entire life, his powers are no match for Kouhei's latent potential. Because of this, he is slightly jealous of Kouhei. Seiji Mido (御堂 晴爾, same reading) is his writer's name. (Source: Wikipedia, edited)