Karasumori's Destruction by Fire Kekkaishi : Season 1 Episode 36

As Kokubouro descends, Masamori and his Night Troops are still preoccupied elsewhere leaving only Yoshimori, Tokine and Shishio to defend Karasamori. They end up in a battle with one of the leaders of Kokuboro. They must try their hardest to survive as all possible reinforcements are being distracted, and delayed by other Kokuboro forces.