Watch Natsume's Book of Friends Season HD Full Free on solarmovie.do. Watch Natsume's Book of Friends tv series online free. When Natsume Takashi inherits a book that belonged to his late grandmother he realizes the book is f...When Natsume Takashi inherits a book that belonged to his late grandmother he realizes the book is filled with the names of spirits she defeated and bound to her will. He then decides to return their names so they can be free once again.