Rex stood near the teleportation formation with a book in hand.
He was waiting for Naela to come back while reading the Basic Book of Combination—he got from the System. As he was reading the book, his mind wandered elsewhere as he called out Devo from within.
In a crackle of black lightning, Devo manifested beside Rex with his arms crossed.
"Nothing was happening, I'm surprised you called me out," He mused in ridicule.
Despite having a spirit and awakened relationship, Rex never calls him out if it is not for a fight or other things. A spirit might be assimilated by an Awakened, in order to go past an Awakened's limit, but they are also living beings.
Sometimes, spirits need a break from all the fighting and pursuit of strength.
"How old are you again?" Rex asked nonchalantly, his eyes still glued on the book. "Aren't you too old to be sulking like this, Devo? If you wanted something, then you should have said it to me directly"