|Manga Debut||Chapter 66|
|Anime Debut||Episode 59|
|Voice Actor||Toshiko Sawada|
|Book of Friends|
|List of Characters|
Ito-san is the guardian youkai of the Mizunagi shrine nearby one of Tanuma's childhood home. She takes on the form of a kind old lady in order to blend in and watch over the local area.
Ito's human form is that of an elderly woman with gray hair. Her eyes are often closed, and she's always seen wearing a smile. In her human form, Ito wears a white collared shirt underneath a light pink sweater, with a long brown skirt that reaches below her knees.
When first interacting with Natsume as a youkai, she maintains her human form, though can freely stretch her shape and fly in the air.
She helped care for a young Tanuma whenever he was sickly and recuperating at his aunt's inn.