I don't understand why people are accusing Erina. A 20 year old girl who went through abuse is right and if she took a stand for herself then it's wrong. I really think we should try to move above the patriarchy traits and consider the feelings of a girl.
Knock, knock, knock. Light taps on his door suddenly brought him out of the pain. He quickly went for the door, putting the weird phenomenon at the back of his head.