This Plays Into The Cultural Difference Between The Two - Tumblr Posts
The real issue behind laios and shuro's relationship is that laios can't handle some one without a backbone.
Take chilchuck for example. Chilchuck has some very serious work place boundaries: Don't intervene with his work, don't talk about his family while on the job, don't treat him like a child, etc.. All of these are perfectly fine boundaries to have but they're boundaries everyone breaks. Marcile pry's into his family life, Senshi gets in the way of his work, Izutsumi basically sleeps on top of him.
Laios is the only one that respects that Chilchuck is just doing his job and he wants to do it a specific way; when laios does something stupid or ignorant chilchuck yells at him for doing so. Laios doesn't misunderstand what Chilchuck's saying because he's being clear and up front with his issues.
But shuro doesn't do that because he has no backbone, he's a coward. He's not even able to correct laios when he gets his name wrong.
He does nothing to stop the growing misunderstanding between the two that he could easily fix if he gained some courage. We only see him tell laios his problems when he at his worst, starving with barely any sleep. He's only brave when he's exhausted. And by then it's already too late. Laios yells at shuro not for not understanding him, but for not telling him the misunderstanding sooner. Because he would have fixed it, he would happily respect shuro's boundaries but he doesn't even know them. And they're more important matters now, he has to save his sister.