The heroine and hero graduated from the same middle school, though they weren't classmates and had no connection. One day, when the heroine was being bullied on her way home, the hero stepped in to help her and got beaten up for it. That was when the heroine first noticed the otherwise unremarkable boy. The more she paid attention to him, the more she cared about him, until she fell in love without even realizing it. But she was too timid to confess, and they missed their chance.
After graduating from college, the heroine, who had just broken up with her boyfriend, got the hero's address from Zheng Yu and moved in next door to him.
Theme: If you love someone, say it out loud.