Solutions

Aru's sensory power was directly proportional to the links he had on a particular area. 

Currently, Aru had about 300 links near the residential area. So, he thought it would be easy to sense the underground portion of the land.

But, there was a slight problem.

The links were distributed over the surface of the earth. Only some trees had deep roots that could pierce into the ground.

He soon realized that it would not be that easy to find Maya or his mice. 

Even though he knew the direction in which they were situated due to the system, it was impossible to sense them directly.

'What should I do?' 

Aru was faced with a new challenge. 

Luckily, he was not the one to give up in the face of adversity. His mind became hyperactive trying to find a solution.

'If it is a problem, I can probably try to solve it.' He thought with confidence.