Even though the lower portion of the mountain was supposed to only have weak monsters, as the monsters of this mountain were acting weird, Rein's party started the search from the base. Very soon it turned out to be a good decision as even before reaching the midway through the mountain, they encountered a UR grade monster.
This monster was a giant wolf and it was in the process of going down the mountain. Ruby wanted to attack it as soon as she saw the monster but Rein stopped her and started to investigate the monster. Soon he was able to see a small worm in this monster's brain too.
This worm was different from the worm that Rein had found in the Ashen Barrens. The worm from there had a long and thin shape while this worm had a round shape. Rein wanted to capture and investigate this worm too as there was a very high chance that this worm was also related to that monster of the core.
