"I won't forbid you from telling anyone that you are the subordinate of the Ruler of Reality so you can use it as a deterrent if ever you met someone familiar with my reputation. But if that person doesn't know me and you can't beat him, make sure to use the bracelet to call me and I will help you."
After giving Deus more information about the usage of the bracelet as well as introducing some information about himself to Deus, Realius no longer paid attention to Deus.
After all, Deus was already mature enough to take care of himself so Realius no longer cared about him. Deus could have the freedom to do whatever he wanted as long as it wasn't detrimental to his plans.