"Why? Did you not say your piece yesterday so you brought your two sons today to continue? Do you want to come over and have a seat? I was just thinking that there's not enough snake meat. Why don't all of you come and make up the numbers?"
Raising My Children With My Personal Spatial Ability
Ren's probably gonna use the portal that leads directly to the Monolith's headquarter. He stole the artifact that has that function from Professor Alfonse Thibaut. I put my hope in this, I really hope I'm correct.
Ren is on for trouble after the Battle Royal. Though, I don't know if he really wants to use the Void Step at that moment or he just uses it because of the influence of Monarch Indifference.