Kekkaishi (結界師 or lit. "Barrier Master") is an ongoing fantasy manga series by Yellow Tanabe. It is serialized in Japan by Shogakukan in the manga magazine Shōnen Sunday, and licensed for an English release in North America by Viz Media. It was adapted as a fifty-two episode anime series by Sunrise, which was broadcast between October 2006 and February 2008. The series is about Yoshimori Sumimura and Tokine Yukimura, heirs to rival clans of kekkai (barrier magic) users, who must defend their school from the spirits drawn to the sacred land it is built upon. Kekkaishi received the 2007 Shogakukan Manga Award for shōnen manga