Library

"Are you an angel?" Do you believe there are angels in this world? "She can't be my angel, this woman is really evil." Angels must be kind? "I'm sorry, I'm sorry, it's all my fault." Is sorry useful or do I need the police? "I will always protect you" Why you, why? (Is everything really that simple? Why does the person you trust the most turn into the person you hate the most? Why does the person you love the most turn into the stranger? Why do the people you hate the most support you unconditionally?) Everything is rolling back and forth in my mind. Is the ending really as expected?