章 714: 376 Peeking into the Realm of the Ultimate Fighter (4200)_2

Something seemed to be undergoing an intense annihilating reaction.

Inside the Shelter Tower, on the third floor.

Casio placed one hand on the blue crystal, and a unit of spirit blood was depleted. The Defense Array was activated, wiping away the calamities in one sweep.

He backed off a few steps, suddenly noticing a blurred symbol floating above the crystal. Casio hadn't ever seen it before, but he could immediately understand its meaning. It represented the number twenty, meaning a dose of spirit blood could power the Defense Array for twenty hours.

Admittedly, the consumption was quite substantial.

But fortunately, Casio could control the Defense Array twice a day. That is, once when entering the World of Calamities and once more when leaving it, avoiding wasting energy when he was not in the World of Calamities.

Considering this, the consumption of the Defense Array was still acceptable.

A few seconds later, Casio returned to the first floor from the third.