It turns out that even two people who aren't on the same wavelength can still meet and understand each other. By chance, Su Xi, starting high school, ran into Lin Zhixu during an exam. She thought they might never meet again after that brief encounter, but then the class placement exam put them in the same class...
"Ask me if there's any math you don't understand," Lin Zhixu suddenly said, leaning closer.
Startled by his movement, Su Xi put on a casual air and said, "It's just math. How hard can it be?"
Lin Zhixu suddenly leaned closer and looked at Su Xi. "Are you sure?"
Su Xi was so nervous she stammered. "I... think so."
Lin Zhixu was even more certain: she could only ever belong to him.