The Tradition Of Protection.

Each young supreme beast doesn't even know their parents but it doesn't matter. The Supreme Alliance is all they need and the Supreme Alliance will do its best to take care of them until they achieve immortality. He can't ask for a better parent than them. 

As long as a Supreme Beast is not an Origin god, then he or she is not yet fully matured in the eyes of the Supreme Alliance. They will dote on them until they achieve immortality. In that way, the return on their investment is certain. 

"I hope you took everything that you might need."

Legion-5 replied, "I did."

His mentor reminded him, "Good. Tell me if we are going too fast or if you get nauseous."

"I'll do that." But he thought to himself, "What are you, my nanny?"

He can only lampoon inwardly. It is because he knows that this care for the young is more than just business. It is a tradition. It is their culture and Tanc830,428,723C is not his nanny.