I'm surprised by the amount of hate in this thread.
If the protagonist was actually unlikeable, people would probably be way more accepting of everything the author keeps putting him through and just laugh at the "jokes" at his expense. But Sorata isn't unlikeable. He knows what he wants, he's honest about it, and he actively fights for it, so naturally people are going to root for him. And when that happens, the characters constantly getting in his way are inevitably going to be perceived as the "bad guys", whether the author intends them to be or not.
I mean, who else is even serving as an antagonist in this story? Most of the conflict comes from Miyuki being somehow capable of expressing her feelings to everyone except the one person who actually needs to hear them, while constantly pushing Sorata to his limit with misunderstandings and nonsense. She literally confesses her feelings to him in this very chapter... while he's asleep, which by the way, she made sure to poke him before to see if he really was sleeping so he could not hear what she confessed. The story isn't even hiding where most of its conflict comes from.
Then you have her brother and other characters who genuinely seem to think she's way too good for him, plus his own friend, who could easily help clear up some of these misunderstandings but deliberately chooses not to and just lets everything happen.
And the funny thing is that the manga itself calls some of this behavior out, so I don't think the author is unaware of what he's doing (obviously). He's deliberately creating these situations and then dragging them out for "comedy" and drama.
So I'm honestly not surprised by the hate at all. When you make your protagonist sympathetic, have him clearly communicate what he wants, and then build most of the conflict around everyone else either refusing to communicate with him or actively making things worse, readers are obviously going to side with him and get pissed at the people standing in his way.
At this point, I think the author just enjoys watching this poor guy suffer. You will see, the "joke" will repeat itself next chapter.