The Red Star Falcon and the Fire Drake King immediately put their guards up as soon as the floodgate to Marcius's previously contained spirit energy was opened.
Marcius was at the top of the Spirit Born realm, and he possessed a spirit beast of primal level. It was not an exaggeration to say that, at this level of cultivation, Marcius controlled the highest quality and quantity of spirit energy that anybody could have.
And it was enough to put the two spirit beasts in front of him on high alert.
They felt threatened, but not to the point of fleeing.
They felt fear, but not to the point of being scared.
But it was just enough.