They were born in the same hospital and grew up in the same building.
They have been sitting at the same table since kindergarten, going to and from school together.
He knows her bust size, the date of her menstrual period every month, and the boy's name that appears most often in her diary...
She washed his underwear, watched him take a shower, and went to the men's room with him...
Hou Sinian: Ma Jinyue, don't have a crush on any top student. The second to last and the first to last are a perfect match.
Ma Jinyue: Hou Sinian, I will never cry again because I failed in the exam. You can rest assured and become a top student.