Holy crap was that depressing to watch. One thing I was surprised about was her brother. He seems like a very compassionate and caring sibling. Which kind of is the opposite which we kind of were lead to believe.
Now I think everyone was expecting a depressing back story but that was more than I can handle. Now her friend committing suicide wasn't unexpected while being sad to watch. But the fact that her mother actually asked her if she killed her friend. Imo no amount of stress is an excuse for doing that she really is a Pos. It is no wonder she doesn't want to go back home to her mother. Poor Sayu.
Props to her brother for understanding her situation. Granted clearly it wasn't handled the best way. Regardless it will be interesting how these next few episodes go.