I had to wait until I actually saw the Ousama no Brunch clip before reading. I like to be informed ;)

But yes, Jun and Sho rarely lay a finger on each other when either acts like a dumbass. HOWEVER. What I've noticed is that Jun is very quick to be physical with Sho when Sho's done something silly. I don't know if it's just a natural reaction but he'll propel himself forward and drag Sho around or demand an explanation. For example:



and



and



(I'll take what I can get)