As soon as Sam saw what was inside this transparent barrier. A blue-colored heart which looked like a human heart beating under the transparent barrier, pumping a blue-colored liquid into the surrounding soil.

This is extremely similar to the Sesh's heart he found when he went to find the meteorite sand island and then it also reminded him of that large pillar competition ground and then the guardian.

To this day, he doesn't know if Sesh's heart placed under the sea which created a poison zone in the sea was related to the guardian. But he sure as hell knew that both hearts are related.

As soon as he saw this, he got the many answers he needed. The mutation might have been caused by the blue liquid that was circulating and if his guess was right, it is demon blood and it affected the entire ecosystem and mutated every living being, and this guy whoever that made this possible might just be a person who is interested in experimenting with different species.

The Azure blood demons and their internal conflict due to jealousy are just a means to an end for him.

If Sam's guess is right, there is no such thing as the special weapon or special power that the demons get from here.

That guy who planted this pumping heart just wants to see how long this whole setup would survive and how mutation it could cause and how much change would happen to the species. And Sam came to this conclusion by the decreasing energy in the blood circulation.

Even though the energy difference is not exactly visible and it can even be considered negligible, Sam is using the observation ability and that ability works because it can even detect the things that are on a negligible level.

The energy in the blood is of limited supply and as Sam