As Tiona moved deep underground, she made sure to closely pay attention to her surroundings.
The skill set she currently possessed had been carefully handpicked by her Master for this special reconnaissance mission.
Thirteen had tasked her to find the Brain Beetle's location.
Tiona was immune to mind-affecting abilities, so there was no danger of her falling under the enemy's control.
Just like always, the teenage boy was accompanying her through their connection, allowing him to sense what she was sensing.
'It's not here, Tiona,' Thirteen said. 'Maybe we should go deeper.'
The Black Snake nodded in agreement and moved deeper under the ground.
Tiona was currently a mile deep into the Brain Beetle's nest, and the monsters that she had come across were only Rank 1 to Rank 3 monsters.
She sensed their presence through their Life Signatures, which allowed her to measure their strength at a safe distance.