[Ren pauses in eating to watch Shino's disaster chopstick attempts (and is quietly thankful he got his good hand, even if he is reasonably dexterous with both).]

Just lift up your plate and push it into your mouth or something, I'm sure nobody will mind. [And then he just casually proceeds to pick his own up quite easily, because dominant hands are useful like that.] Especially since it's probably pretty obvious you can't use your good hand.

[He bounces their joined hands up and down for a moment.]