"Sis, what's wrong with you? Why do you look a bit off?" Song Xiaodong asked, puzzled, looking at Song Xiaoru.
At that moment, Song Xiaoru was struggling fiercely inside. She was contemplating whether to tell Song Xiaodong that he was actually not their parents' biological child and that they were not biologically siblings.
She knew that Song Xiaodong had the right to know and she should let Song Xiaodong know. However, deep inside she wanted to conceal it. She feared that once Song Xiaodong knew, their sibling affection would vanish. Having relied on each other for so many years, she really didn't want to lose this brother.
She also knew that even if Song Xiaodong found out she wasn't his real sister, he would treat her the same. But for some reason, she feared that their relationship would change.
