Usually called Hijiringo. He is Natsuhiko and Matsuri senpai. He is very cheerful, good at sports, popular among the boys and the girls, but cunning and had a bad character. Initially he wanted to take advantage Mitsuru, but then liked the girl. He was very afraid of dogs and ghosts (even he is priest's son and have spiritual power).
Eiichi is the older brother Hijiri Yoichi, one of Gakuen Alice characters.