Takashi Natsume is a fictional character from the popular Japanese manga and anime series Natsume's Book of Friends (Natsume Yūjin-chō). He is a high school student who can see spirits and youkai, which are supernatural creatures from Japanese folklore. After inheriting a book from his grandmother, he discovers that it contains the names of spirits she had bound to her service. Throughout the series, Natsume seeks to return the names to the spirits, aiming to free them from his grandmother's control. His journey explores themes of friendship, loneliness, and the connection between humans and the spirit world, making it a heartfelt story for many fans.