Picture Source: Zoku Natsume Yuujinchou, episode 3
Natori Shuuichi (Shuuichi Natori in Eng. way of writing names) is the head of the Natori clan and Natsume's "friend". He can also see spirits. On the surface, he works as an actor, but his real job is being an exorcist. He is voiced by Akira Ishida.
Appearance
He has short blonde hair, a medium build, and red eyes. He has as a lizard birthmark/youkai that moves around on his body that can only be seen by people or spirits with strong spiritual power. Roses and background light appear when he smiles.
Personality
Because he is an exorcist and has strong spiritual power, he has the ability to manipulate paper dolls (Shikigami) and has three spirits under his command. One of them, Hiiragi, was a youkai that that was saved.
When Natori is first introduced, he hated spirits for his horrible childhood. Because of this, he has a tedency of being harsh with the spirits. Natsume tends to disapprove of his forceful exorcism methods. But, after meeting Natsume, he gradually softens even though his ways aren't much different. Over the course, Natori develop concern for Natsume's well-being for he tends to be reckless when it involves with spirits.
His relationship with Nyanko-sensei/Madara was not very affectionate in the start, but he gradually becomes friendly towards him, almost as if Natori was Natsume and he was playing with him.
Also, because of the necessities of his work, Natori can lie easily. He knows that Natsume is of the same nature, he feels that he has similarities with him. This causes Natori to slowly become attached with Natsume.