Mana sense was a technique that sent waves of mana from your core to the surroundings around you.
These mana waves then crashed against the objects in the vicinity.
After the initial clash, the waves would bounce back toward their host, thereby letting the individual scan his surroundings.
This worked on both living as well as non-living things.
Living beings had their own mana signature, which made it a little difficult for the mana waves to bounce back after coming into contact with foreign mana essence.
As the mana signature of other beings indirectly destroyed those mana waves.
So in order to overcome this problem, one had to have a sufficiently strong mana core.
That was why only after reaching the Platinum rank were individuals able to release mana waves that were strong enough to not get destroyed on their way back toward the main body.
