[Holding his head in place was a good idea, because otherwise, Ren definitely would have turned away at the mention of being afraid at least and gone on trying to direct this conversation at the grass or the swords or the tree past Shun's shoulder. As it is, he drops his gaze to Shun's throat instead, looking very much like he'd like to deny that he's afraid but can't because they both know that's not true.

After a moment, Ren reaches up to grab onto the front of Shun's jacket, as a way of accepting his offer of support. And maybe to steel himself a little for what he feels like he has to say. He's scolded Shun for keeping things to himself, and he'd feel guilty if he did the same thing now.]

...Controlling it isn't the problem. I know more about how to use it than anyone, except the guy who gave it to us. It's wanting to control it...

[Because this definitely didn't happen with only a little prompting. If it were that easy, he would have fallen all the way back into during that one fight with Kai, instead of only skimming the surface of it. No, this was the result of a few weeks worth of missing his friends more than ever, and then that conversation with Johan...his control over it has definitely been more fragile since then.]