Kekkaishi Vol. 11 (manga)

Tragedy has struck the Yoshimori site, and each of our friends attempts to cope with their grief alone. Tokine searches for a secret way into Kokuboro's castle, Yoshimori trains for an ultimate confrontation, and Masamori returns home with a regiment of his night troops, leaving his little brother with no room of his own. Unfortunately, before long, one of our three heroes is in need of a rescue...