He Xi: In the past twelve years, I have been humble and ugly. It took me twelve years to make myself stronger step by step, and then I was finally able to enter your world.
Gu Yan: In the past twelve years, you have been following my footsteps, so for the rest of your life, I will protect you.
This is the story of an ordinary girl who has a crush on a boy and finally wins happiness through her own efforts.