The new Devil was called Erio and it had many memories and emotions to share with Nial. It was almost as if the devilized beast was trying to dump all its emotions and memories onto Nial who sorted out the most useful feelings and memories while discarding the rest quickly.
He chose to give the cubs the chance to decide whether they wanted to be devilized as well but they were not in a hurry. Maybe, once they grew into adults, they would choose to follow into the footsteps of their father and become Devils.
However, even if they wouldn't want to become Devils, Nial hoped that the Phoenix-Fire Lion cubs could become a valuable asset for the new shelter. Whether it was for the purpose of defending the shelter or turning into assistants in the forging hall, Nial hoped that the cubs would prove themselves to be resourceful. After all, their flames were exceptionally useful when it came to forging.