Sumi was pinned down against the ground and had a zombie right above her. The door between her and the zombie was the only mean that protected her from the zombie.
Ryuga and Kingslayer started to push the door with all the strength which was left in their bodies. They were tired as hell but they knew if they didn't get out of that door now, they might regret it later.
Toshi was all alone in the main hall room facing the tremendous horde of the zombies which kept on coming at him without stopping even once. He slashed every single of the zombies with all the strength he had in his arms.
He was using his right arm to fight all this time and it was hurting like hell to keep on using it to slash those zombie's necks again and again. But, if he stopped doing that, he would have to face death.
Everyone in that house was in a life involving situation. If any of them made even a single mistake, it would mean death for them.
That house had become a literal hell.