Centipede? Skeleton? Bone Scavenger!...

The massive door that filled their entire field of vision slowly began to move inward with a heavy rumble. As the sound of it opening spread through the space, every player drew their weapon in unison and stared fixedly into the doorway without blinking...

Kirito instantly drew Dark Repulser from his back and gripped it tightly. Keita, Klein, and Agil also aimed their weapons at the entrance. Only Wu Yan stood quietly, though one hand rested on the hilt of Sky Gazer at his back...

At the very front, Heathcliff drew his longsword from the inner side of his cross-shaped shield. When the floor boss's gate had fully opened, he raised his right hand and shouted!

"Battle! Begin!"

"Yeah!!!"

Like a charging war cry, everyone roared with all their strength, bolstering their courage. Following behind Heathcliff amid a clatter of uneven footsteps, they charged into the floor boss's room!

Like warriors marching off never to return! Only after the last person entered the floor boss's room did its full appearance reveal itself to them...

It was an immensely vast space, even larger than a Roman arena. The floor was circular, and the walls curved upward, stretching to an unknown height before bending inward and joining together, like half an egg!

The surroundings were silent and dark. Even the players with the widest fields of vision could only vaguely see a dozen meters ahead. Yet aside from the floor and walls, there was nothing else here—only stone platforms jutting out from who knew where...

Once everyone had entered and formed up, the floor boss's gate behind them slammed shut just as the intelligence had described. The resounding crash was like a heavy hammer striking their hearts, making them tense up at once...

Because they knew that when that door opened again,