Takashi Natsume has always walked the line between two worlds, but inheriting his grandmother's magical book flips everything upside down. Now every spirit and demon knows his name, and they all want a piece of the binding contracts inside.

Just when he thinks he's found a fragile peace between yokai and classmates, a cram session at a country inn proves the supernatural world never takes a vacation. The innkeeper's dangerous experiments with mermaid blood drag the whole group into a mess that homework definitely didn't prepare them for.

• Publisher: VIZ Media LLC
• Publication Date: January 4, 2011
• Edition: Original
• Language: English
• Print Length: 200 pages
• ISBN-10: 1421532476
• ISBN-13: 978-1421532479
• Item Weight: 5.6 ounces
• Reading Age: 14 - 17 years
• Dimensions: 5 x 0.7 x 7.5 inches
• Part of Series: Natsume's Book of Friends
• Grade Level: 7 - 9
• Author: Yuki Midorikawa
• Format: Paperback
• Genre: Supernatural, Drama, Comedy
• Audience: Teen & Young Adult