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Even though it was just an ordinary conversation, why did Yan Huan reveal such a complex and incomprehensible expression at that time?
The multitude of questions made her want to seek the answers, but she dared not to ask, for fear that doing so would expose the affection in her heart.
This way, she feared it might draw him closer, to scrutinize this person who liked him.
Then, he would find that many of the questions she asked shouldn't be within her knowledge.
"Why do you know I didn't go home?"
"Why do you know when I finish my part-time job?"
"Why do you know whom I've spoken with in class?"
Because, I am always watching you from the shadows, surveilling you!
That is the unbearable truth that Sakuragi Hitomi cannot voice.
Because she knows her behavior is morally reprehensible; once revealed, it might frighten him, perhaps even completely ostracize her from the world.