Kekkaishi is an ongoing shōnen fantasy manga written and illustrated by Yellow Tanabe. It has been serialized in the weekly Japanese manga magazine Weekly Shōnen Sunday since issue 47 in 2003. Serial chapters have been collected in tankōbon volumes by Shogakukan, with the first released on 18 February 2004, and 29 volumes released as of 18 May 2010. The series is about teenagers 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.