Perhaps you should take an example from this then.

[ At least he does retract his hand now.. don't worry, embarrassing grandpa won't be embarrassing for so long. For now, anyway. He needs to divide his time equally between being a big bad demon and an embarrassing grandpa, after all.. ]

The next time they act in such a way to you, do not let them. Even if he may be more powerful than you [ which he does seem a little troubled about as he says it, judging from his expression, considering it's something highly unfair but also something that just.. can't be helped.. ] things can not continue like this.

[ He can't watch his cute grandson be bullied anymore than he has already been.. sigh, why can't all demons just be reasonable like they are. Is it so much to ask for. ]

Although hopefully he has learned his lesson through this.