Regarding chapter 51, I think Yu Yang's mother does want to protect him since she always shows him kindness and I think she accepts the fact that he's gay but she seems to be quite passive and scared to stand up and defend him :(
I also don't think his father hates him, intead he wants to give this "perfect family" image to his relatives that are the real homophobes here.
It just breaks my heart to think this happens in real life and some people have to endure a lot of sh*it alone. I would love to give Yu Yang a big hug and buy him something to eat ┗( T﹏T )┛
I couldn't wait till the next week so I took a look at the raws and all I can say is that I'm disappointed but not surprised and that's starting to annoy me a bit