Ryuutaro stared at the hole for a moment, but that was fine by him, compared to the things to have scared him earlier. Messing with the laws of physic was rather usual in his world as well. Sure, the destroyed stadiums had been bad, but when Ryuuga was involved he also wouldn't have been surprised by worse things.
It was just the amount of violence in this world that scared him, even though that now that Byakuran's hologram was gone, he'd surpress it as good as he could.

He scared blankly for another minute before smiling slightly as he looked at Hayato.
"Indeed. Knowing that is worth a lot."
He took a deep breath as he looked up, leaning against Hayato's shoulder.
He knew that Hayato had told him to not get used to this, he knew how much it meant to Hayato and while he knew he wouldn't be able to get used to it anytime soon, he wondered if it wouldn't be better to try, regardless of what Hayato said.
Only being here to be protected, to be scared... that was not the kind of life he'd ever want to live.