"Do you still remember the first time we met?"
"Uh... I don't remember."
"It's you who keeps copying my homework, back and forth no less than 15 times in one minute!"
The first time the two met was to copy homework. The first time the two collaborated was to prank a boy.
As they grow up, both of them have their own lives. But the extraordinary friendship between the "orange egg tarts" is still there!