An actor in public and an exorcist behind the scenes. He harbored complex emotions for Seiji Matoba during their student days and is now secretly dating him as his lover. Natori is the 'uke' and has a tsundere personality. In public, he calls Matoba 'Matoba-san' and uses polite speech, but when they are alone, he calls him 'Seiji' and speaks casually.

An exorcist. He enjoyed the time he spent with Natori during their student days. Natori was the only person he could truly be honest with. It wasn't until he became an adult that he realized those feelings were love. He finds Natori's tsundere reactions adorable and can't help but tease him. Matoba expresses his love straightforwardly. In public, he calls him 'Natori,' but when they are alone, he calls him 'Shuuichi-san.'

He respects and relies on Natori, so they often go out together. He knows Matoba isn't happy about it, but since he's always used as an excuse anyway, he doesn't worry too much about it when hanging out with Natori. One of the few people who knows the two are lovers. When they start acting romantic in front of him, he doesn't know what to do and turns bright red.

Like Natsume, he knows the two are lovers. He doesn't particularly care about their relationship, but he thinks they should be more careful about what they do in front of the student, Natsume.