"You couldn't do it yet", Ryuutaro corrected as he moved up his hand to start petting through Hayato's hair. "We both know you can and will. That makes a difference."
His voice was silent, yet very confident. He believed in this, even though he hadn't seen it with his ability. But in the end the way of seeing it didn't change anything.
If the time paradox didn't go completely crazy on them, Hayato should be able to do it sometime.