DB Vol 5 Part 6

It was simply a matter of moving by instinct. To cut the throats of these fast, massive monsters that possessed nothing but cruelty, one could not hesitate for even 0.1 seconds. Hesitation was synonymous with death.

However, even without the monsters, the chances of surviving this place seemed low. Seung-wook was currently standing on the boundary he had designated as the last line of defense. If this line collapsed, it was obvious that monsters would pour into the nearby city. No matter how well-equipped the city's underground shelters were, it took time for a large number of people to evacuate all at once.

Therefore, he had to stall for as much time as possible. But as he blocked the surging monsters, he was already breathless. That wasn't all. The other Espers defending the area also seemed to have reached their limits. Left with no choice, Seung-wook decided to squeeze out every last bit of his strength.